转：C#精髓第四讲 GridView 72般绝技

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C#精髓

第四讲 GridView 72般绝技

作者：清清月儿

主页：http://blog.csdn.net/21aspnet/           时间：2007.3.24-26

为了写本文，又搭工又搭料，累的2天2宿没睡觉，这篇文章实在是耗费我太多的心血，版权永远属于CSDN社区的我，请不要试图修改本文，破坏全文的完整性，希望您尊重我的劳动成果！

快速预览：

GridView无代码分页排序

GridView选中，编辑，取消，删除

GridView正反双向排序

GridView和下拉菜单DropDownList结合

GridView和CheckBox结合

鼠标移到GridView某一行时改变该行的背景色方法一

鼠标移到GridView某一行时改变该行的背景色方法二

GridView实现删除时弹出确认对话框

GridView实现自动编号

GridView实现自定义时间货币等字符串格式

GridView实现用“...”代替超长字符串

GridView一般换行与强制换行

GridView显示隐藏某一列

GridView弹出新页面/弹出新窗口

GridView固定表头(不用javascript只用CSS，2行代码，很好用)

GridView合并表头多重表头无错完美版（以合并3列3行举例）

GridView突出显示某一单元格（例如金额低于多少，分数不及格等）

GridView加入自动求和求平均值小计

GridView数据导入Excel/Excel数据读入GridView

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我的新书《asp.net开发技巧精讲》

2011.12.12日，写在我的新书开印之前 

=================================

.GridView无代码分页排序：

效果图：

.AllowPaging设为True，aspx代码中是Allowpaging="True"；

.默认1页10条，如果要修改每页条数，修改PageSize即可，在aspx代码中是PageSize=""。

.默认的是单向排序的，右击GridView弹出“属性”，选择AllowSorting为True即可。

.GridView选中，编辑，取消，删除：

效果图：

后台代码：

你可以使用sqlhelper,本文没用。代码如下：

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page

{

//清清月儿http://blog.csdn.net/21aspnet

    SqlConnection sqlcon;

    SqlCommand sqlcom;

    string strCon = "Data Source=(local);Database=数据库名;Uid=帐号;Pwd=密码";

    protected void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

            bind();

        }

    }

    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

    {

        GridView1.EditIndex = e.NewEditIndex;

        bind();

    }

//删除

    protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)

    {

        string sqlstr = "delete from 表 where id='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

        sqlcon = new SqlConnection(strCon);

        sqlcom = new SqlCommand(sqlstr,sqlcon);

        sqlcon.Open();

        sqlcom.ExecuteNonQuery();

        sqlcon.Close();

        bind();

    }

//更新

    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

    {

        sqlcon = new SqlConnection(strCon);

        string sqlstr = "update 表 set 字段1='"

            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[].Controls[])).Text.ToString().Trim() + "',字段2='"

            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[].Controls[])).Text.ToString().Trim() + "',字段3='"

            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[].Controls[])).Text.ToString().Trim() + "' where id='"

            + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

        sqlcom=new SqlCommand(sqlstr,sqlcon);

        sqlcon.Open();

        sqlcom.ExecuteNonQuery();

        sqlcon.Close();

        GridView1.EditIndex = -;

        bind();

    }

//取消

    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

    {

        GridView1.EditIndex = -;

        bind();

    }

//绑定

    public void bind()

    {

        string sqlstr = "select * from 表";

        sqlcon = new SqlConnection(strCon);

        SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

        DataSet myds = new DataSet();

        sqlcon.Open();

        myda.Fill(myds, "表");

        GridView1.DataSource = myds;

        GridView1.DataKeyNames = new string[] { "id" };//主键

        GridView1.DataBind();

        sqlcon.Close();

    }

}

前台主要代码：

                            ... ...

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding=""

                        ForeColor="#333333" GridLines="None" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"

                        OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit">

                        <FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />

                        <Columns>

                            <asp:BoundField DataField="身份证号码" HeaderText="用户ID" ReadOnly="True" />

                            <asp:BoundField DataField="姓名" HeaderText="用户姓名" />

                            <asp:BoundField DataField="员工性别" HeaderText="性别" />

                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />

                            <asp:CommandField HeaderText="选择" ShowSelectButton="True" />

                            <asp:CommandField HeaderText="编辑" ShowEditButton="True" />

                            <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />

                        </Columns>

                        <RowStyle ForeColor="#000066" />

                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />

                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />

                    </asp:GridView>

.GridView正反双向排序：

效果图：点姓名各2次的排序，点其他也一样可以。

后台代码：

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

public partial class Default3 : System.Web.UI.Page

{

//清清月儿的博客http://blog.csdn.net/21aspnet

    SqlConnection sqlcon;

    string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=";

    protected void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

            ViewState["SortOrder"] = "身份证号码";

            ViewState["OrderDire"] = "ASC";

            bind();

        }

    }

    protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)

    {

        string sPage = e.SortExpression;

        if (ViewState["SortOrder"].ToString() == sPage)

        {

            if (ViewState["OrderDire"].ToString() == "Desc")

                ViewState["OrderDire"] = "ASC";

            else

                ViewState["OrderDire"] = "Desc";

        }

        else

        {

            ViewState["SortOrder"] = e.SortExpression;

        }

        bind();

    }

    public void bind()

    {

        string sqlstr = "select top 5 * from 飞狐工作室";

        sqlcon = new SqlConnection(strCon);

        SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

        DataSet myds = new DataSet();

        sqlcon.Open();

        myda.Fill(myds, "飞狐工作室");

        DataView view = myds.Tables["飞狐工作室"].DefaultView;

        string sort = (string)ViewState["SortOrder"] + " " + (string)ViewState["OrderDire"];

        view.Sort = sort;

        GridView1.DataSource = view;

        GridView1.DataBind();

        sqlcon.Close();

    }

}

前台主要代码：

<asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"

                        CellPadding="" Font-Size="9pt" OnSorting="GridView1_Sorting" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">

                        <FooterStyle BackColor="White" ForeColor="#000066" />

                        <Columns>

                             <asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" />

                            <asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/>

                            <asp:BoundField DataField="员工性别" HeaderText="性别" SortExpression="员工性别"/>

                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>

                        </Columns>

                        <RowStyle ForeColor="#000066" />

                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />

                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />

                    </asp:GridView>

.GridView和下拉菜单DropDownList结合：

效果图：

后台代码：

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

public partial class Default4 : System.Web.UI.Page

{

    SqlConnection sqlcon;

    string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";

    protected void Page_Load(object sender, EventArgs e)

    {

        DropDownList ddl;

        if (!IsPostBack)

        {

            string sqlstr = "select top 5 * from 飞狐工作室";

            sqlcon = new SqlConnection(strCon);

            SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

            DataSet myds = new DataSet();

            sqlcon.Open();

            myda.Fill(myds, "飞狐工作室");

            GridView1.DataSource = myds;

            GridView1.DataBind();

            for (int i = ; i <= GridView1.Rows.Count - ; i++)

            {

                DataRowView mydrv = myds.Tables["飞狐工作室"].DefaultView[i];

                if (Convert.ToString(mydrv["员工性别"]).Trim() == "True")

                {

                    ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1");

                    ddl.SelectedIndex = ;

                }

                if (Convert.ToString(mydrv["员工性别"]).Trim() == "False")

                {

                    ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1");

                    ddl.SelectedIndex = ;

                }

            }

            sqlcon.Close();

        }

    }

    public SqlDataReader ddlbind()

    {

        string sqlstr = "select distinct 员工性别 from 飞狐工作室";

        sqlcon = new SqlConnection(strCon);

        SqlCommand sqlcom = new SqlCommand(sqlstr, sqlcon);

        sqlcon.Open();

        return sqlcom.ExecuteReader();

    }

前台主要代码：

<asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"

                        CellPadding="" Font-Size="9pt"  BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">

                        <FooterStyle BackColor="White" ForeColor="#000066" />

                        <Columns>

                             <asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" />

                            <asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/>

                            <asp:TemplateField HeaderText="员工性别">

                                <ItemTemplate>

                                    <asp:DropDownList ID="DropDownList1" runat="server" DataSource='<%# ddlbind()%>' DataValueField="员工性别" DataTextField="员工性别">

                                    </asp:DropDownList>

                                </ItemTemplate>

                            </asp:TemplateField>

                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>

                        </Columns>

                        <RowStyle ForeColor="#000066" />

                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />

                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />

                    </asp:GridView>

.GridView和CheckBox结合：

效果图：

后台代码：

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

public partial class Default5 : System.Web.UI.Page

{

//清清月儿http://blog.csdn.net/21aspnet

    SqlConnection sqlcon;

    string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";

    protected void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

            bind();

        }

    }

    protected void CheckBox2_CheckedChanged(object sender, EventArgs e)

    {

        for (int i = ; i <= GridView1.Rows.Count - ; i++)

        {

            CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");

            if (CheckBox2.Checked == true)

            {

                cbox.Checked = true;

            }

            else

            {

                cbox.Checked = false;

            }

        }

    }

    protected void Button2_Click(object sender, EventArgs e)

    {

        sqlcon = new SqlConnection(strCon);

        SqlCommand sqlcom;

        for (int i = ; i <= GridView1.Rows.Count - ; i++)

        {

            CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");

            if (cbox.Checked == true)

            {

                string sqlstr = "delete from 飞狐工作室 where 身份证号码='" + GridView1.DataKeys[i].Value + "'";

                sqlcom = new SqlCommand(sqlstr, sqlcon);

                sqlcon.Open();

                sqlcom.ExecuteNonQuery();

                sqlcon.Close();

            }

        }

        bind();

    }

    protected void Button1_Click(object sender, EventArgs e)

    {

        CheckBox2.Checked = false;

        for (int i = ; i <= GridView1.Rows.Count - ; i++)

        {

            CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");

            cbox.Checked = false;

        }

    }

    public void bind()

    {

        string sqlstr = "select top 5 * from 飞狐工作室";

        sqlcon = new SqlConnection(strCon);

        SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

        DataSet myds = new DataSet();

        sqlcon.Open();

        myda.Fill(myds, "tb_Member");

        GridView1.DataSource = myds;

        GridView1.DataKeyNames = new string[] { "身份证号码" };

        GridView1.DataBind();

        sqlcon.Close();

    }

}

前台主要代码：

<asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"

                        CellPadding="" Font-Size="9pt"  BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">

                        <FooterStyle BackColor="White" ForeColor="#000066" />

                        <Columns>

                             <asp:TemplateField>

                                <ItemTemplate>

                                    <asp:CheckBox ID="CheckBox1" runat="server" />

                                </ItemTemplate>

                            </asp:TemplateField>

                             <asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" />

                            <asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/>

                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>

                        </Columns>

                        <RowStyle ForeColor="#000066" />

                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />

                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />

                    </asp:GridView>

                     <asp:CheckBox ID="CheckBox2" runat="server" AutoPostBack="True" Font-Size="9pt" OnCheckedChanged="CheckBox2_CheckedChanged"

                        Text="全选" />

                    <asp:Button ID="Button1" runat="server" Font-Size="9pt" Text="取消" OnClick="Button1_Click" />

                    <asp:Button ID="Button2" runat="server" Font-Size="9pt" Text="删除" OnClick="Button2_Click" />

.鼠标移到GridView某一行时改变该行的背景色方法一：

效果图：

做法：

双击GridView的OnRowDataBound事件；

在后台的GridView1_RowDataBound()方法添加代码，最后代码如下所示：

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

    {

        int i;

        //执行循环，保证每条数据都可以更新

        for (i = ; i < GridView1.Rows.Count; i++)

        {

            //首先判断是否是数据行

            if (e.Row.RowType == DataControlRowType.DataRow)

            {

                //当鼠标停留时更改背景色

                e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'");

                //当鼠标移开时还原背景色

                e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c");

            }

        }

    }

前台代码：

<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

    <title>实现鼠标划过改变GridView的行背景色 清清月儿http://blog.csdn.net/21aspnet </title>

</head>

<body>

    <form id="form1" runat="server">

    <div>

        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="身份证号码"

            DataSourceID="SqlDataSource1" AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">

            <Columns>

                <asp:BoundField DataField="身份证号码" HeaderText="身份证号码" ReadOnly="True" SortExpression="身份证号码" />

                <asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名" />

                <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址" />

                <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />

            </Columns>

            <FooterStyle BackColor="White" ForeColor="#000066" />

            <RowStyle ForeColor="#000066" />

            <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

            <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />

            <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />

        </asp:GridView>

        <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:北风贸易ConnectionString1 %>"

            SelectCommand="SELECT top 5 [身份证号码], [姓名], [员工性别], [家庭住址], [邮政编码] FROM [飞狐工作室]" DataSourceMode="DataReader"></asp:SqlDataSource>

    </div>

    </form>

</body>

</html>

.鼠标移到GridView某一行时改变该行的背景色方法二：

效果图：

做法：和上面的一样就是代码不同

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

    {

        //int i;

        ////执行循环，保证每条数据都可以更新

        //for (i = 0; i < GridView1.Rows.Count; i++)

        //{

        //    //首先判断是否是数据行

        //    if (e.Row.RowType == DataControlRowType.DataRow)

        //    {

        //        //当鼠标停留时更改背景色

        //        e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'");

        //        //当鼠标移开时还原背景色

        //        e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c");

        //    }

        //}

        //如果是绑定数据行

        if (e.Row.RowType == DataControlRowType.DataRow)

        {

            //鼠标经过时，行背景色变

            e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'");

            //鼠标移出时，行背景色变

            e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");

        }

    }

.GridView实现删除时弹出确认对话框：

效果图：

实现方法：

双击GridView的OnRowDataBound事件；

在后台的GridView1_RowDataBound()方法添加代码，最后代码如下所示：

    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

    {

        //如果是绑定数据行

        if (e.Row.RowType == DataControlRowType.DataRow)

        {

             if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)

            {

                ((LinkButton)e.Row.Cells[].Controls[]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除：/"" + e.Row.Cells[1].Text + "/"吗?')");

            }

        }

    }

.GridView实现自动编号：

效果图：

实现方法：

双击GridView的OnRowDataBound事件；

在后台的GridView1_RowDataBound()方法添加代码，最后代码如下所示：

    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

    {

        //如果是绑定数据行 //清清月儿http://blog.csdn.net/21aspnet

        if (e.Row.RowType == DataControlRowType.DataRow)

        {

            ////鼠标经过时，行背景色变

            //e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'");

            ////鼠标移出时，行背景色变

            //e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");

            ////当有编辑列时，避免出错，要加的RowState判断

            //if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)

            //{

            //    ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除：/"" + e.Row.Cells[1].Text + "/"吗?')");

            //}

        }

        if (e.Row.RowIndex != -)

        {

            int id = e.Row.RowIndex + ;

            e.Row.Cells[].Text = id.ToString();

        }

    }

注意这时最好把前台的第一列的表头该为“编号”，因为以前的第一列被“吃掉”了。

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"

                        OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">

                        <FooterStyle BackColor="White" ForeColor="#000066" />

                        <Columns>

                            <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />

                            <asp:BoundField DataField="姓名" HeaderText="用户姓名" />

                            <asp:BoundField DataField="员工性别" HeaderText="性别" />

                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />

                            <asp:CommandField HeaderText="选择" ShowSelectButton="True" />

                            <asp:CommandField HeaderText="编辑" ShowEditButton="True" />

                            <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />

                        </Columns>

                        <RowStyle ForeColor="#000066" />

                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />

                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />

                    </asp:GridView>

.GridView实现自定义时间货币等字符串格式：

效果图：

图1-未格式化前

图2-格式化后

解决方法：

在asp.net .0中，如果要在绑定列中显示比如日期格式等，如果用下面的方法是显示不了的

<asp :BoundField DataField="CreationDate"

DataFormatString="{0:M-dd-yyyy}"

HeaderText="CreationDate" />

主要是由于htmlencode属性默认设置为true,已防止XSS攻击，安全起见而用的，所以，可以有以下两种方法解决

、

<asp :GridView ID="GridView1" runat="server">

<columns>

<asp :BoundField DataField="CreationDate"

DataFormatString="{0:M-dd-yyyy}"

HtmlEncode="false"

HeaderText="CreationDate" />

</columns>

</asp>

将htmlencode设置为false即可

另外的解决方法为，使用模版列

<asp :GridView ID="GridView3" runat="server" >

<columns>

<asp :TemplateField HeaderText="CreationDate" >

<edititemtemplate>

<asp :Label ID="Label1" runat="server"

Text='<%# Eval("CreationDate", "{0:M-dd-yyyy}") %>'>

</asp>

</edititemtemplate>

<itemtemplate>

<asp :Label ID="Label1" runat="server"

Text=’<%# Bind("CreationDate", "{0:M-dd-yyyy}") %>'>

</asp>

</itemtemplate>

</asp>

</columns>

</asp>

前台代码：

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="身份证号码"

            DataSourceID="SqlDataSource1" AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">

            <Columns>

                <asp:BoundField DataField="身份证号码" HeaderText="身份证号码" ReadOnly="True" SortExpression="身份证号码" />

                <asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名" />

                <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />

                <asp:BoundField DataField="出生日期" HeaderText="出生日期" SortExpression="出生日期" />

                <asp:BoundField DataField="起薪" HeaderText="起薪" SortExpression="起薪" />

            </Columns>

            <FooterStyle BackColor="White" ForeColor="#000066" />

            <RowStyle ForeColor="#000066" />

            <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

            <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />

            <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />

        </asp:GridView>

        <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:北风贸易ConnectionString1 %>"

            SelectCommand="SELECT top 5 [出生日期], [起薪], [身份证号码], [姓名], [家庭住址], [邮政编码] FROM [飞狐工作室]" DataSourceMode="DataReader"></asp:SqlDataSource>

附录-常用格式化公式：

{:C}  货币；

{:D4}由0填充的4个字符宽的字段中显示整数；

{:000.0}四舍五入小数点保留第几位有效数字；

{:N2}小数点保留2位有效数字；{:N2}%   小数点保留2位有效数字加百分号；

{:D}长日期；{:d}短日期；{:yy-MM-dd}   例如07--；；{:yyyy-MM-dd}  例如2007--

 .GridView实现用“...”代替超长字符串：

效果图：

解决方法：数据绑定后过滤每一行即可

for (int i = ; i <= GridView1.Rows.Count - ; i++)

        {

            DataRowView mydrv;

            string gIntro;

            if (GridView1.PageIndex == )

            {

                mydrv = myds.Tables["飞狐工作室"].DefaultView[i];//表名

                gIntro = Convert.ToString(mydrv["家庭住址"]);//所要处理的字段

                GridView1.Rows[i].Cells[].Text = SubStr(gIntro, );

            }

            else

            {

                mydrv = myds.Tables["飞狐工作室"].DefaultView[i + ( * GridView1.PageIndex)];

                gIntro = Convert.ToString(mydrv["家庭住址"]);

                GridView1.Rows[i].Cells[].Text = SubStr(gIntro, );

            }

        } 

调用的方法：

    public string SubStr(string sString, int nLeng)

    {

        if (sString.Length <= nLeng)

        {

            return sString;

        }

        string sNewStr = sString.Substring(, nLeng);

        sNewStr = sNewStr + "...";

        return sNewStr;

    }

后台全部代码：

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page

{

    SqlConnection sqlcon;

    SqlCommand sqlcom;

    string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";

    protected void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

            ViewState["SortOrder"] = "身份证号码";

            ViewState["OrderDire"] = "ASC";

            bind();

        }

    }

    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

    {

        GridView1.EditIndex = e.NewEditIndex;

        bind();

    }

    protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)

    {

        string sqlstr = "delete from 飞狐工作室 where 身份证号码='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

        sqlcon = new SqlConnection(strCon);

        sqlcom = new SqlCommand(sqlstr,sqlcon);

        sqlcon.Open();

        sqlcom.ExecuteNonQuery();

        sqlcon.Close();

        bind();

    }

    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

    {

        sqlcon = new SqlConnection(strCon);

        string sqlstr = "update 飞狐工作室 set 姓名='"

            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[].Controls[])).Text.ToString().Trim() + "',家庭住址='"

            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[].Controls[])).Text.ToString().Trim() + "' where 身份证号码='"

            + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

        sqlcom=new SqlCommand(sqlstr,sqlcon);

        sqlcon.Open();

        sqlcom.ExecuteNonQuery();

        sqlcon.Close();

        GridView1.EditIndex = -;

        bind();

    }

    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

    {

        GridView1.EditIndex = -;

        bind();

    }

    public void bind()

    {

        string sqlstr = "select top 5 * from 飞狐工作室";

        sqlcon = new SqlConnection(strCon);

        SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

        DataSet myds = new DataSet();

        sqlcon.Open();

        myda.Fill(myds, "飞狐工作室");

        GridView1.DataSource = myds;

        GridView1.DataKeyNames = new string[] { "身份证号码" };

        GridView1.DataBind();

        for (int i = ; i <= GridView1.Rows.Count - ; i++)

        {

            DataRowView mydrv;

            string gIntro;

            if (GridView1.PageIndex == )

            {

                mydrv = myds.Tables["飞狐工作室"].DefaultView[i];

                gIntro = Convert.ToString(mydrv["家庭住址"]);

                GridView1.Rows[i].Cells[].Text = SubStr(gIntro, );

            }

            else

            {

                mydrv = myds.Tables["飞狐工作室"].DefaultView[i + ( * GridView1.PageIndex)];

                gIntro = Convert.ToString(mydrv["家庭住址"]);

                GridView1.Rows[i].Cells[].Text = SubStr(gIntro, );

            }

        }

        sqlcon.Close();

    }

    public string SubStr(string sString, int nLeng)

    {

        if (sString.Length <= nLeng)

        {

            return sString;

        }

        string sNewStr = sString.Substring(, nLeng);

        sNewStr = sNewStr + "...";

        return sNewStr;

    }

    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

    {

        //如果是绑定数据行

        if (e.Row.RowType == DataControlRowType.DataRow)

        {

            ////鼠标经过时，行背景色变

            //e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'");

            ////鼠标移出时，行背景色变

            //e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");

            ////当有编辑列时，避免出错，要加的RowState判断

            //if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)

            //{

            //    ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除：/"" + e.Row.Cells[1].Text + "/"吗?')");

            //}

        }

        if (e.Row.RowIndex != -)

        {

            int id = e.Row.RowIndex + ;

            e.Row.Cells[].Text = id.ToString();

        }

    }

}

 .GridView一般换行与强制换行：

效果图：

首先设置<asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  ItemStyle-Width="" />

gridview里有一列绑定的数据很长，显示的时候在一行里面显示，页面拉得很宽。

原因是连续英文段为一个整体导致的，在RowDataBound中添加上了一句e.Row.Cells[].Style.Add("word-break", "break-all")就可以。

如果要给所有的列增加此属性：

 protected void Page_Load(object sender, EventArgs e)

    {

        //正常换行

        GridView1.Attributes.Add("style", "word-break:keep-all;word-wrap:normal");

        //下面这行是自动换行

        GridView1.Attributes.Add("style", "word-break:break-all;word-wrap:break-word");

        if (!IsPostBack)

        {

             bind();//调用数据绑定即可

        }

    }

总之：善用CSS的word-break:break-all;word-wrap:break-word属性即可，这个属性是通用的对于顽固的南换行问题都可以解决，不局限于GridView。

 .GridView显示隐藏某一列：

本方案为月儿独创，不同于网上其他方式，我觉得用一个CheckBox更人性化，这样可以隐藏不必要的列，让用户自己选择需要出现的列，在处理多列时这是一个很好的解决方案！

效果图：

图1-开始

图2-点击显示的CheckBox后

解决方案：

public void bind()

    {

        string sqlstr = "select top 5 * from 飞狐工作室";

        sqlcon = new SqlConnection(strCon);

        SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

        DataSet myds = new DataSet();

        sqlcon.Open();

        myda.Fill(myds, "飞狐工作室");

        GridView1.DataSource = myds;

        GridView1.DataKeyNames = new string[] { "身份证号码" };

        GridView1.DataBind();

        sqlcon.Close();

        GridView1.Columns[].Visible = false;//一开始隐藏

        CheckBox1.Checked = false;//如果不这样后面的代码会把他True

    }

双击CheckBox1，在CheckedChanged方法里写上代码，最后代码如下：

protected void CheckBox1_CheckedChanged(object sender, EventArgs e)

    {

         GridView1.Columns[].Visible=! GridView1.Columns[].Visible;

         Response.Write("GridView1的第4列现在的显示隐藏状态是："+GridView1.Columns[].Visible.ToString());

    }

注意：CheckBox1的AutoPostBack要True！

后台全部代码如下：

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page

{

    SqlConnection sqlcon;

    SqlCommand sqlcom;

    string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";

    protected void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

            ViewState["SortOrder"] = "身份证号码";

            ViewState["OrderDire"] = "ASC";

            bind();

                   }

    }

    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

    {

        GridView1.EditIndex = e.NewEditIndex;

        bind();

    }

    protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)

    {

        string sqlstr = "delete from 飞狐工作室 where 身份证号码='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

        sqlcon = new SqlConnection(strCon);

        sqlcom = new SqlCommand(sqlstr,sqlcon);

        sqlcon.Open();

        sqlcom.ExecuteNonQuery();

        sqlcon.Close();

        bind();

    }

    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

    {

        sqlcon = new SqlConnection(strCon);

        string sqlstr = "update 飞狐工作室 set 姓名='"

            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[].Controls[])).Text.ToString().Trim() + "',家庭住址='"

            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[].Controls[])).Text.ToString().Trim() + "' where 身份证号码='"

            + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

        sqlcom=new SqlCommand(sqlstr,sqlcon);

        sqlcon.Open();

        sqlcom.ExecuteNonQuery();

        sqlcon.Close();

        GridView1.EditIndex = -;

        bind();

    }

    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

    {

        GridView1.EditIndex = -;

        bind();

    }

    public void bind()

    {

        string sqlstr = "select top 5 * from 飞狐工作室";

        sqlcon = new SqlConnection(strCon);

        SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

        DataSet myds = new DataSet();

        sqlcon.Open();

        myda.Fill(myds, "飞狐工作室");

        GridView1.DataSource = myds;

        GridView1.DataKeyNames = new string[] { "身份证号码" };

        GridView1.DataBind();

        sqlcon.Close();

        GridView1.Columns[].Visible = false;

        CheckBox1.Checked = false;

    }

    protected void CheckBox1_CheckedChanged(object sender, EventArgs e)

    {

         GridView1.Columns[].Visible=! GridView1.Columns[].Visible;

         Response.Write("GridView1的第4列现在的显示隐藏状态是："+GridView1.Columns[].Visible.ToString());

    }

}

前台代码：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

    <title>GridView显示隐藏列 清清月儿http://blog.csdn.net/21aspnet </title>

</head>

<body style="font-size=12px">

    <form id="form1" runat="server">

    <div>

                   <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"

                        OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"  >

                        <FooterStyle BackColor="White" ForeColor="#000066" />

                        <Columns>

                            <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />

                            <asp:BoundField DataField="姓名" HeaderText="用户姓名" />

                            <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />

                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />

                            <asp:CommandField HeaderText="选择" ShowSelectButton="True" />

                            <asp:CommandField HeaderText="编辑" ShowEditButton="True" />

                            <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />

                        </Columns>

                        <RowStyle ForeColor="#000066" />

                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />

                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />

                    </asp:GridView>

        <asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="True" Font-Size="12px"

            OnCheckedChanged="CheckBox1_CheckedChanged" Text="显示隐藏家庭住址" /></div>

    </form>

</body>

</html>

 .GridView弹出新页面/弹出制定大小位置新窗口：

效果图：

方案一：简单的方法，新窗口不固定大小

 <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"

                        OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"  >

                        <FooterStyle BackColor="White" ForeColor="#000066" />

                        <Columns>

                            <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />

                            <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />

                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />

                            <asp:HyperLinkField HeaderText="姓名" Text="姓名" DataNavigateUrlFields="姓名" DataNavigateUrlFormatString="Default6.aspx?GoodsID={0}" Target="mainframe" NavigateUrl="~/Default6.aspx" DataTextField="姓名" >

                    </asp:HyperLinkField>

                            <asp:CommandField HeaderText="选择" ShowSelectButton="True" />

                            <asp:CommandField HeaderText="编辑" ShowEditButton="True" />

                            <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />

                        </Columns>

                        <RowStyle ForeColor="#000066" />

                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />

                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />

                    </asp:GridView>

DataNavigateUrlFields是链接的字段名，DataNavigateUrlFormatString是路径。

方案二：精确控制弹出窗口大小位置

<asp:HyperLinkColumn DataNavigateUrlField="EmployeeID" DataNavigateUrlFormatString="javascript:varwin=window.open('detail.aspx?ID={0}',null,'width=300,height=200');window.Close();"

       DataTextField="LastName" HeaderText="LastName"></asp:HyperLinkColumn>

使用的是结合javascript的window.open方法，关于window.open的参数网上有很多帖子，本站也有许多参考

弹出窗口大全 http://blog.csdn.net/21aspnet/archive/2004/10/25/150231.aspx   即可！

  .GridView固定表头(不用javascript只用CSS!，很好用)：

效果图：

代码：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

    <title>GridView固定表头 清清月儿http://blog.csdn.net/21aspnet </title>

        <style>

.Freezing

   {

   position:relative ;

   table-layout:fixed;

   top:expression(this.offsetParent.scrollTop);

   z-index: ;

   }

.Freezing th{text-overflow:ellipsis;overflow:hidden;white-space: nowrap;padding:2px;}

</style>

</head>

<body style="font-size=12px">

    <form id="form1" runat="server">

    <div style="overflow-y: scroll; height: 200px;width:300px" id="dvBody">

                   <asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding="" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"

                        OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowCreated="GridView1_RowCreated"  >

                        <FooterStyle BackColor="White" ForeColor="#000066" />

                        <Columns>

                            <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />

                            <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />

                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />

                            <asp:BoundField DataField="姓名" HeaderText="姓名"  />

                        </Columns>

                        <RowStyle ForeColor="#000066" />

                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>

                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" CssClass="Freezing"/>

                    </asp:GridView>

        </div>

    </form>

</body>

</html>

用法：CSS设如上的样式，HeaderStyle加CssClass="Freezing，套住GridView的Div设置高度宽度 <div style="overflow-y: scroll; height: 200px;width:200px" >

.GridView合并表头多重表头无错完美版（以合并3列3行举例）

效果图：

后台代码：

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

using System.Drawing;

public partial class _Default : System.Web.UI.Page

{

    SqlConnection sqlcon;

    SqlCommand sqlcom;

    string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";

    protected void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

            bind();

        }

    }

    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

    {

        GridView1.EditIndex = e.NewEditIndex;

        bind();

    }

    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

    {

        sqlcon = new SqlConnection(strCon);

        string sqlstr = "update 飞狐工作室 set 姓名='"

            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[].Controls[])).Text.ToString().Trim() + "',家庭住址='"

            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[].Controls[])).Text.ToString().Trim() + "' where 身份证号码='"

            + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

        sqlcom=new SqlCommand(sqlstr,sqlcon);

        sqlcon.Open();

        sqlcom.ExecuteNonQuery();

        sqlcon.Close();

        GridView1.EditIndex = -;

        bind();

    }

    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

    {

        GridView1.EditIndex = -;

        bind();

    }

    public void bind()

    {

        string sqlstr = "select top 10 * from 飞狐工作室";

        sqlcon = new SqlConnection(strCon);

        SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

        DataSet myds = new DataSet();

        sqlcon.Open();

        myda.Fill(myds, "飞狐工作室");

        GridView1.DataSource = myds;

        GridView1.DataKeyNames = new string[] { "身份证号码" };

        GridView1.DataBind();

        sqlcon.Close();

    }

//这里就是解决方案

    protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)

    {

        switch (e.Row.RowType)

        {

            case DataControlRowType.Header:

                //第一行表头

                TableCellCollection tcHeader = e.Row.Cells;

                tcHeader.Clear();

                tcHeader.Add(new TableHeaderCell());

                tcHeader[].Attributes.Add("rowspan", ""); //跨Row

                tcHeader[].Attributes.Add("bgcolor", "white");

                tcHeader[].Text = "";

                tcHeader.Add(new TableHeaderCell());

                //tcHeader[1].Attributes.Add("bgcolor", "Red");

                tcHeader[].Attributes.Add("colspan", ""); //跨Column

                tcHeader[].Text = "全部信息</th></tr><tr>";

                //第二行表头

                tcHeader.Add(new TableHeaderCell());

                tcHeader[].Attributes.Add("bgcolor", "DarkSeaGreen");

                tcHeader[].Text = "身份证号码";

                tcHeader.Add(new TableHeaderCell());

                tcHeader[].Attributes.Add("bgcolor", "LightSteelBlue");

                tcHeader[].Attributes.Add("colspan", "");

                tcHeader[].Text = "基本信息";

                tcHeader.Add(new TableHeaderCell());

                tcHeader[].Attributes.Add("bgcolor", "DarkSeaGreen");

                tcHeader[].Text = "福利";

                tcHeader.Add(new TableHeaderCell());

                tcHeader[].Attributes.Add("bgcolor", "LightSteelBlue");

                tcHeader[].Attributes.Add("colspan", "");

                tcHeader[].Text = "联系方式</th></tr><tr>";

                //第三行表头

                tcHeader.Add(new TableHeaderCell());

                tcHeader[].Attributes.Add("bgcolor", "Khaki");

                tcHeader[].Text = "身份证号码";

                tcHeader.Add(new TableHeaderCell());

                tcHeader[].Attributes.Add("bgcolor", "Khaki");

                tcHeader[].Text = "姓名";

                tcHeader.Add(new TableHeaderCell());

                tcHeader[].Attributes.Add("bgcolor", "Khaki");

                tcHeader[].Text = "出生日期";

                tcHeader.Add(new TableHeaderCell());

                tcHeader[].Attributes.Add("bgcolor", "Khaki");

                tcHeader[].Text = "薪水";

                tcHeader.Add(new TableHeaderCell());

                tcHeader[].Attributes.Add("bgcolor", "Khaki");

                tcHeader[].Text = "家庭住址";

                tcHeader.Add(new TableHeaderCell());

                tcHeader[].Attributes.Add("bgcolor", "Khaki");

                tcHeader[].Text = "邮政编码";

                break;

        }

    }

}

前台：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

    <title>GridView合并多重表头表头 清清月儿http://blog.csdn.net/21aspnet </title>

</head>

<body >

    <form id="form1" runat="server">

    <div  >

                   <asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding=""  OnRowEditing="GridView1_RowEditing"

                        OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowCreated="GridView1_RowCreated"  >

                        <FooterStyle BackColor="White" ForeColor="#000066" />

                        <Columns>

                            <asp:CommandField HeaderText="编辑" ShowEditButton="True" />

                            <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />

                            <asp:BoundField DataField="姓名" HeaderText="姓名"  />

                            <asp:BoundField DataField="出生日期" HeaderText="邮政编码"  />

                             <asp:BoundField DataField="起薪" HeaderText="起薪"  />

                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />

                            <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />

                        </Columns>

                        <RowStyle ForeColor="#000066" />

                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>

                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />

                    </asp:GridView>

        </div>

    </form>

</body>

</html>

.GridView突出显示某一单元格（例如金额低于多少，分数不及格等）

效果图：

解决方案：主要是绑定后过滤

 GridView1.DataBind();

        for (int i = ; i <= GridView1.Rows.Count - ; i++)

        {

            DataRowView mydrv = myds.Tables["飞狐工作室"].DefaultView[i];

            string score = Convert.ToString(mydrv["起薪"]);

            if (Convert.ToDouble(score) < 34297.00)//大家这里根据具体情况设置可能ToInt32等等

            {

                GridView1.Rows[i].Cells[].BackColor = System.Drawing.Color.Red;

            }

        }

        sqlcon.Close();

全部后台代码：

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

using System.Drawing;

public partial class Default7 : System.Web.UI.Page

{

    SqlConnection sqlcon;

    SqlCommand sqlcom;

    string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";

    protected void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

            bind();

        }

    }

    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

    {

        GridView1.EditIndex = e.NewEditIndex;

        bind();

    }

    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

    {

        sqlcon = new SqlConnection(strCon);

        string sqlstr = "update 飞狐工作室 set 姓名='"

            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[].Controls[])).Text.ToString().Trim() + "',家庭住址='"

            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[].Controls[])).Text.ToString().Trim() + "' where 身份证号码='"

            + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

        sqlcom = new SqlCommand(sqlstr, sqlcon);

        sqlcon.Open();

        sqlcom.ExecuteNonQuery();

        sqlcon.Close();

        GridView1.EditIndex = -;

        bind();

    }

    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

    {

        GridView1.EditIndex = -;

        bind();

    }

    public void bind()

    {

        string sqlstr = "select top 10 * from 飞狐工作室";

        sqlcon = new SqlConnection(strCon);

        SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

        DataSet myds = new DataSet();

        sqlcon.Open();

        myda.Fill(myds, "飞狐工作室");

        GridView1.DataSource = myds;

        GridView1.DataKeyNames = new string[] { "身份证号码" };

        GridView1.DataBind();

        for (int i = ; i <= GridView1.Rows.Count - ; i++)

        {

            DataRowView mydrv = myds.Tables["飞狐工作室"].DefaultView[i];

            string score = Convert.ToString(mydrv["起薪"]);

            if (Convert.ToDouble(score) < 34297.00)//大家这里根据具体情况设置可能ToInt32等等

            {

                GridView1.Rows[i].Cells[].BackColor = System.Drawing.Color.Red;

            }

        }

        sqlcon.Close();

    }

}

前台代码：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >

<head id="Head1" runat="server">

    <title>GridView突出显示某一单元格 清清月儿http://blog.csdn.net/21aspnet </title>

</head>

<body >

    <form id="form1" runat="server">

    <div  >

                   <asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding=""  OnRowEditing="GridView1_RowEditing"

                        OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"  >

                        <FooterStyle BackColor="White" ForeColor="#000066" />

                        <Columns>

                            <asp:CommandField HeaderText="编辑" ShowEditButton="True" />

                            <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />

                            <asp:BoundField DataField="姓名" HeaderText="姓名"  />

                            <asp:BoundField DataField="出生日期" HeaderText="邮政编码"  />

                             <asp:BoundField DataField="起薪" HeaderText="起薪"  DataFormatString="{0:C}" HtmlEncode="false"/>

                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />

                            <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />

                        </Columns>

                        <RowStyle ForeColor="#000066" />

                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>

                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />

                    </asp:GridView>

        </div>

    </form>

</body>

</html>

 .GridView加入自动求和求平均值小计

效果图：

解决方案：

private double sum = ;//取指定列的数据和，你要根据具体情况对待可能你要处理的是int

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

    {

        if (e.Row.RowIndex >= )

        {

            sum += Convert.ToDouble(e.Row.Cells[].Text);

        }

        else if (e.Row.RowType == DataControlRowType.Footer)

        {

            e.Row.Cells[].Text = "总薪水为：";

            e.Row.Cells[].Text = sum.ToString();

            e.Row.Cells[].Text = "平均薪水为：";

            e.Row.Cells[].Text = ((int)(sum / GridView1.Rows.Count)).ToString();

        }

    }

后台全部代码：

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

using System.Drawing;

public partial class Default7 : System.Web.UI.Page

{

    SqlConnection sqlcon;

    SqlCommand sqlcom;

    string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";

    protected void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

            bind();

        }

    }

    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

    {

        GridView1.EditIndex = e.NewEditIndex;

        bind();

    }

    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

    {

        sqlcon = new SqlConnection(strCon);

        string sqlstr = "update 飞狐工作室 set 姓名='"

            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[].Controls[])).Text.ToString().Trim() + "',家庭住址='"

            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[].Controls[])).Text.ToString().Trim() + "' where 身份证号码='"

            + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

        sqlcom = new SqlCommand(sqlstr, sqlcon);

        sqlcon.Open();

        sqlcom.ExecuteNonQuery();

        sqlcon.Close();

        GridView1.EditIndex = -;

        bind();

    }

    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

    {

        GridView1.EditIndex = -;

        bind();

    }

    public void bind()

    {

        string sqlstr = "select top 5 * from 飞狐工作室";

        sqlcon = new SqlConnection(strCon);

        SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

        DataSet myds = new DataSet();

        sqlcon.Open();

        myda.Fill(myds, "飞狐工作室");

        GridView1.DataSource = myds;

        GridView1.DataKeyNames = new string[] { "身份证号码" };

        GridView1.DataBind();

        sqlcon.Close();

    }

    private double sum = ;//取指定列的数据和

    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

    {

        if (e.Row.RowIndex >= )

        {

            sum += Convert.ToDouble(e.Row.Cells[].Text);

        }

        else if (e.Row.RowType == DataControlRowType.Footer)

        {

            e.Row.Cells[].Text = "总薪水为：";

            e.Row.Cells[].Text = sum.ToString();

            e.Row.Cells[].Text = "平均薪水为：";

            e.Row.Cells[].Text = ((int)(sum / GridView1.Rows.Count)).ToString();

        }

    }

}

前台：唯一的花头就是设置ShowFooter="True" ，否则默认表头为隐藏的！

<asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding=""  OnRowEditing="GridView1_RowEditing"

                        OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound" ShowFooter="True"  >

                        <FooterStyle BackColor="White" ForeColor="#000066" />

                        <Columns>

                            <asp:CommandField HeaderText="编辑" ShowEditButton="True" />

                            <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />

                            <asp:BoundField DataField="姓名" HeaderText="姓名"  />

                            <asp:BoundField DataField="出生日期" HeaderText="邮政编码"  />

                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />

                            <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />

                            <asp:BoundField DataField="起薪" HeaderText="起薪"  />

                        </Columns>

                        <RowStyle ForeColor="#000066" />

                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>

                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />

                    </asp:GridView>

 .GridView数据导入Excel/Excel数据读入GridView

效果图：

解决方案：

页面增加一个按钮，单击事件添加如下方法：

protected void Button1_Click(object sender, EventArgs e)

    {

        Export("application/ms-excel", "学生成绩报表.xls");

    }

    private void Export(string FileType, string FileName)

    {

        Response.Charset = "GB2312";

        Response.ContentEncoding = System.Text.Encoding.UTF7;

        Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());

        Response.ContentType = FileType;

        this.EnableViewState = false;

        StringWriter tw = new StringWriter();

        HtmlTextWriter hw = new HtmlTextWriter(tw);

        GridView1.RenderControl(hw);

        Response.Write(tw.ToString());

        Response.End();

    }

//如果没有下面方法会报错类型“GridView”的控件“GridView1”必须放在具有 runat=server 的窗体标记内

    public override void VerifyRenderingInServerForm(Control control)

    {

    }

还有由于是文件操作所以要引入名称空间IO和Text

后台代码：

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

using System.Drawing;

using System.IO;

using System.Text;

public partial class Default7 : System.Web.UI.Page

{

    SqlConnection sqlcon;

    SqlCommand sqlcom;

    string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";

    protected void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

            bind();

        }

    }

    public void bind()

    {

        string sqlstr = "select top 5 * from 飞狐工作室";

        sqlcon = new SqlConnection(strCon);

        SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

        DataSet myds = new DataSet();

        sqlcon.Open();

        myda.Fill(myds, "飞狐工作室");

        GridView1.DataSource = myds;

        GridView1.DataKeyNames = new string[] { "身份证号码" };

        GridView1.DataBind();

        sqlcon.Close();

    }

    protected void Button1_Click(object sender, EventArgs e)

    {

        Export("application/ms-excel", "学生成绩报表.xls");

    }

    private void Export(string FileType, string FileName)

    {

        Response.Charset = "GB2312";

        Response.ContentEncoding = System.Text.Encoding.UTF7;

        Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());

        Response.ContentType = FileType;

        this.EnableViewState = false;

        StringWriter tw = new StringWriter();

        HtmlTextWriter hw = new HtmlTextWriter(tw);

        GridView1.RenderControl(hw);

        Response.Write(tw.ToString());

        Response.End();

    }

    public override void VerifyRenderingInServerForm(Control control)

    {

    }

}

前台：

<asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding=""

                         BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"   >

                        <FooterStyle BackColor="White" ForeColor="#000066" />

                        <Columns>

                            <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />

                            <asp:BoundField DataField="姓名" HeaderText="姓名"  />

                            <asp:BoundField DataField="出生日期" HeaderText="邮政编码"  />

                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />

                            <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />

                            <asp:BoundField DataField="起薪" HeaderText="起薪"  />

                        </Columns>

                        <RowStyle ForeColor="#000066" />

                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>

                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />

                    </asp:GridView>

        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="导出" />

读取Excel数据的代码：这个很简单的

private DataSet CreateDataSource()

    {

        string strCon;

        strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("excel.xls") + "; Extended Properties=Excel 8.0;";

        OleDbConnection olecon = new OleDbConnection(strCon);

        OleDbDataAdapter myda = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", strCon);

        DataSet myds = new DataSet();

        myda.Fill(myds);

        return myds;

    }

    protected void Button1_Click(object sender, EventArgs e)

    {

        GridView1.DataSource = CreateDataSource();

        GridView1.DataBind();

    }
转：http://blog.csdn.net/21aspnet/article/details/1540301
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