ASP.NET Excel下载方法一览

方法一 通过GridView(简评：方法比较简单，但是只适合生成格式简单的Excel，且无法保留VBA代码),页面无刷新

aspx.cs部分

using System;

using System.Collections;

using System.Configuration;

using System.Data;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Text;

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

{

    private Data_Link link = new Data_Link();

    private string sql;

    protected void Page_Load(object sender, EventArgs e)

    {

        Ajax.Utility.RegisterTypeForAjax(typeof(DataPage_NationDataShow));

    }

    protected void btnExcel_Click(object sender, EventArgs e)

    {

        string strExcelName = "MyExcel";

        strExcelName = strExcelName.Replace(@"/", "");

        Data_Link link = new Data_Link();

        string strSQL = this.hidParam.Value;

        DataSet ds = new DataSet();

        ds = link.D_DataSet_Return(strSQL);//获得想要放入Excel的数据

        gvExcel.Visible = true;

        gvExcel.DataSource = null;

        gvExcel.DataMember = ds.Tables[0].TableName;

        gvExcel.DataSource = ds.Tables[0];

        gvExcel.DataBind();

        ExportToExcel(this.Page, gvExcel, strExcelName);

    }

    protected void gvExcel_RowDataBound(object sender, GridViewRowEventArgs e)

    { }

    public override void VerifyRenderingInServerForm(Control control)

    { }

    /// <summary>

    /// 工具方法，Excel出力(解决乱码问题)

    /// </summary>

    /// <param name="page">调用页面</param>

    /// <param name="excel">Excel数据</param>

    /// <param name="fileName">文件名</param>

    public void ExportToExcel(System.Web.UI.Page page, GridView excel, string fileName)

    {

        try

        {

            foreach (GridViewRow row in excel.Rows)

            {

                for (int i = 0; i < row.Cells.Count; i++)

                {

                    excel.HeaderRow.Cells[i].BackColor = System.Drawing.Color.Yellow;

                }

            }

            excel.Font.Size = 10;

            excel.AlternatingRowStyle.BackColor = System.Drawing.Color.LightCyan;

            excel.RowStyle.Height = 25;

            page.Response.AppendHeader("Content-Disposition", "attachment;filename=" + fileName);

            page.Response.Charset = "utf-8";

            page.Response.ContentType = "application/vnd.ms-excel";

            page.Response.Write("<meta http-equiv=Content-Type content=text/html;charset=utf-8>");

            excel.Page.EnableViewState = false;

            excel.Visible = true;

            excel.HeaderStyle.Reset();

            excel.AlternatingRowStyle.Reset();

            System.IO.StringWriter oStringWriter = new System.IO.StringWriter();

            System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);

            excel.RenderControl(oHtmlTextWriter);

            page.Response.Write(oStringWriter.ToString());

            page.Response.End();

            excel.DataSource = null;

            excel.Visible = false;

        }

        catch (Exception e)

        {

        }

    }

}

　　aspx部分

<head runat="server">

<script type="text/javascript">

//Excel DownLoad

function excelExport(){

    var hidText = document.getElementById("hidParam");

    hidText.value = "some params";

    document.getElementById("ExcelOutput").click();

}

</script>

</head>

<body onload="pageInit()">

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

        <input type="button" value="EXCEL下载" style="width:100px;" onclick="excelExport()" id="excelBut" />

        <input id="hidParam" type="text" runat="server" style="display:none;"/>

        <asp:Button  runat="server" ID="ExcelOutput"  style="display:none" Text= "EXCEL出力"  Width="0px" onclick="btnExcel_Click"  UseSubmitBehavior="false"/>

        <asp:GridView ID="gvExcel" runat="server" Height="95px" OnRowDataBound="gvExcel_RowDataBound" Visible="False"></asp:GridView>

    </form>

</body>

　　在刚才的aspx.cs代码中

foreach (GridViewRow row in excel.Rows)

{

    for (int i = 0; i < row.Cells.Count; i++)

    {

        excel.HeaderRow.Cells[i].BackColor = System.Drawing.Color.Yellow;

    }

}

这部分是给表头添加样式。

有时候为了便于浏览，需要给交叉行添加样式，简单点的可以用下面这种：

excel.AlternatingRowStyle.BackColor = System.Drawing.Color.LightCyan;

但是细看一下会发现它把一整行的样式都改变了，包括后面那些没有用到的列。

解决办法是有，不过比较繁琐，就是修改每个单元格的样式。

int rowCount = excel.Rows.Count;

int colCount = excel.HeaderRow.Cells.Count;

for (int i = 0; i < rowCount; i++)

{

    for(int j=0;j<colCount; j++)

    {

        excel.Rows[i].Cells[j].BackColor = System.Drawing.Color.LightCyan;

    }

}

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------方法二 通过DataGrid(与方法一基本相同),页面无刷新　　

aspx.cs部分

public override void VerifyRenderingInServerForm(Control control)

{}

/// <summary>

/// エクセル出力イベント

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

private void ExcelBut_Click(object sender, System.EventArgs e)

{

    DataGrid dgExcel = new DataGrid();

    try

    {

        DataSet ds = getExcelData(this.PageParams.Value);//出力データを取得する

        if(ds.Tables[0].Rows.Count>0)

        {

            //エクセルへデータを投入する

            string execlName= "MyExcel";

            Encoding encodingType=System.Text.Encoding.UTF8;

            dgExcel.DataMember=ds.Tables[0].TableName;

            dgExcel.DataSource=ds.Tables[0];

            Response.Buffer = true;

            Response.Charset = "utf-8";

            Response.AppendHeader("Content-Disposition",  "attachment;filename=" + execlName+ ".xls");

            Response.ContentEncoding = encodingType;

            Response.ContentType = "application/ms-excel";

            StringWriter oStringWriter = new StringWriter();

            HtmlTextWriter oHtmlTextWriter = new HtmlTextWriter(oStringWriter);

            dgExcel.DataBind();

            dgExcel.Visible = true;

            dgExcel.RenderControl(oHtmlTextWriter);

            Response.Write(oStringWriter.ToString());

            Response.Flush();

            Response.Close();

            dgExcel.DataSource = null;

            dgExcel.Visible = false;

        }

        else

        {

            Response.Write("<script>alert('xxxxxx')</script>");

        }

    }

    catch(Exception ex)

    {

        Response.Write("<script>alert('oooooo')</script>");

    }

}

　　aspx部分

<head runat="server">

<script type="text/javascript">

//Excel DownLoad

function excelExport(){

    var hidText = document.getElementById("hidParam");

    hidText.value = "some params";

    document.getElementById("ExcelOutput").click();

}

</script>

</head>

<body onload="pageInit()">

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

        <input type="button" value="EXCEL下载" style="width:100px;" onclick="excelExport()" id="excelBut" NAME="excelBut"/>

        <input id="hidParam" type="text" runat="server" style="display:none;" NAME="hidParam"/>

        <asp:Button  runat="server" ID="ExcelOutput"  style="display:none" Text= "EXCEL出力"  Width="0px" onclick="btnExcel_Click"  UseSubmitBehavior="false"/>

        <asp:datagrid id="gvExcel" Visible="False" Runat="server" style="Z-INDEX: 107; POSITION: absolute; TOP: 72px; LEFT: 520px"

            Width="80px" Height="40px"></asp:datagrid>

    </form>

</body>

方法三 以XML形式的Excel方式(可以设置丰富的样式，并可以有多个sheet，但需要模版。速度很快，但生成的文件较大，且无法保留VBA代码)

具体方法：把模版以 XML Document形式另存为A.xml。然后参照A.xml中的内容即可

private void ExcelBut_Click(object sender, System.EventArgs e)

{

    DataSet ds = new DataSet();

    string ExcelFileName = "";

    DataRow dr=[------列名信息-------];

    try

    {

        ExcelFileName = Path.Combine(Request.PhysicalApplicationPath + "/ExcelFile", "MyExcel.xls");

        //获取Excel需要的数据

        ds = [------获得数据-------];

        if (ds.Tables.Count == 0)

        {

            Response.Write("<script type='text/javascript'>alert('无数据');</script>");

            return;

        }

        int sheetNum = ds.Tables.Count / 2;

        StreamWriter writer = new StreamWriter(ExcelFileName, false);

        //Styles标签前面的信息相当于'头信息'，不需要改变

        writer.WriteLine("<?xml version=\"1.0\"?>");

        writer.WriteLine("<?mso-application progid=\"Excel.Sheet\"?>");

        writer.WriteLine("<Workbook xmlns=\"urn:schemas-microsoft-com:office:spreadsheet\"");

        writer.WriteLine("xmlns:o=\"urn:schemas-microsoft-com:office:office\"");

        writer.WriteLine("xmlns:x=\"urn:schemas-microsoft-com:office:excel\"");

        writer.WriteLine("xmlns:ss=\"urn:schemas-microsoft-com:office:spreadsheet\"");

        writer.WriteLine("xmlns:html=\"http://www.w3.org/TR/REC-html40\">");

        writer.WriteLine("<DocumentProperties xmlns=\"urn:schemas-microsoft-com:office:office\">");

        writer.WriteLine("<LastAuthor>Automated Report Generator Example</LastAuthor>");

        writer.WriteLine(string.Format("<Created>{0}T{1}Z</Created>", DateTime.Now.ToString("yyyy-mm-dd"), DateTime.Now.ToString("HH:MM:SS")));

        writer.WriteLine(" <Company>51aspx.com</Company>");

        writer.WriteLine(" <Version>11.6408</Version>");

        writer.WriteLine("</DocumentProperties>");

        writer.WriteLine("<ExcelWorkbook xmlns=\"urn:schemas-microsoft-com:office:excel\">");

        writer.WriteLine("<WindowHeight>6195</WindowHeight>");

        writer.WriteLine(" <WindowWidth>18495</WindowWidth>");

        writer.WriteLine(" <WindowTopX>525</WindowTopX>");

        writer.WriteLine(" <WindowTopY>4260</WindowTopY>");

        writer.WriteLine(" <AcceptLabelsInFormulas/>");

        writer.WriteLine(" <ProtectStructure>True</ProtectStructure>");

        writer.WriteLine(" <ProtectWindows>False</ProtectWindows>");

        writer.WriteLine("</ExcelWorkbook>");

        //通过 ss:ID 和 ss:Name相当于html中style的类

        writer.WriteLine("     <Styles>    ");

        writer.WriteLine("      <Style ss:ID='Default' ss:Name='Normal'>    ");

        writer.WriteLine("       <Alignment ss:Vertical='Bottom'/>    ");

        writer.WriteLine("       <Borders/>    ");

        writer.WriteLine("       <Font ss:FontName='ＭＳ Ｐゴシック' x:CharSet='128' x:Family='Modern' ss:Size='11'/>    ");

        writer.WriteLine("       <Interior/>    ");

        writer.WriteLine("       <NumberFormat/>    ");

        writer.WriteLine("       <Protection/>    ");

        writer.WriteLine("      </Style>    ");

        writer.WriteLine("      <Style ss:ID='s23'>    ");

        writer.WriteLine("       <Font ss:FontName='ＭＳ Ｐゴシック' x:CharSet='128' x:Family='Modern' ss:Size='11'    ");

        writer.WriteLine("        ss:Color='#FF0000'/>    ");

        writer.WriteLine("      </Style>    ");

        writer.WriteLine("      <Style ss:ID='s24'>    ");

        writer.WriteLine("       <Interior/>    ");

        writer.WriteLine("      </Style>    ");

        writer.WriteLine("      <Style ss:ID='s25'>    ");

        writer.WriteLine("       <Font ss:FontName='ＭＳ Ｐゴシック' x:CharSet='128' x:Family='Modern' ss:Size='11'/>    ");

        writer.WriteLine("       <Interior/>    ");

        writer.WriteLine("      </Style>    ");

        writer.WriteLine("      <Style ss:ID='s26'>    ");

        writer.WriteLine("       <Font ss:FontName='ＭＳ Ｐゴシック' x:CharSet='128' x:Family='Modern' ss:Size='11'    ");

        writer.WriteLine("        ss:Color='#FF0000'/>    ");

        writer.WriteLine("       <Interior/>    ");

        writer.WriteLine("      </Style>    ");

        writer.WriteLine("      <Style ss:ID='s27'>    ");

        writer.WriteLine("       <Borders>    ");

        writer.WriteLine("        <Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Left' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Right' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Top' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("       </Borders>    ");

        writer.WriteLine("       <Font ss:FontName='ＭＳ Ｐゴシック' x:CharSet='128' x:Family='Modern' ss:Size='11'/>    ");

        writer.WriteLine("       <Interior ss:Color='#CCFFFF' ss:Pattern='Solid'/>    ");

        writer.WriteLine("       <Protection/>    ");

        writer.WriteLine("      </Style>    ");

        writer.WriteLine("      <Style ss:ID='s28'>    ");

        writer.WriteLine("       <Borders>    ");

        writer.WriteLine("        <Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Left' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Right' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Top' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("       </Borders>    ");

        writer.WriteLine("       <Font ss:FontName='ＭＳ Ｐゴシック' x:CharSet='128' x:Family='Modern' ss:Size='11'/>    ");

        writer.WriteLine("       <Interior ss:Color='#CCFFFF' ss:Pattern='Solid'/>    ");

        writer.WriteLine("      </Style>    ");

        writer.WriteLine("      <Style ss:ID='s29'>    ");

        writer.WriteLine("       <Borders>    ");

        writer.WriteLine("        <Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Left' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Top' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("       </Borders>    ");

        writer.WriteLine("       <Font ss:FontName='ＭＳ Ｐゴシック' x:CharSet='128' x:Family='Modern' ss:Size='11'/>    ");

        writer.WriteLine("       <Interior ss:Color='#CCFFFF' ss:Pattern='Solid'/>    ");

        writer.WriteLine("      </Style>    ");

        writer.WriteLine("      <Style ss:ID='s30'>    ");

        writer.WriteLine("       <Borders>    ");

        writer.WriteLine("        <Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Top' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("       </Borders>    ");

        writer.WriteLine("       <Font ss:FontName='ＭＳ Ｐゴシック' x:CharSet='128' x:Family='Modern' ss:Size='11'/>    ");

        writer.WriteLine("       <Interior ss:Color='#CCFFFF' ss:Pattern='Solid'/>    ");

        writer.WriteLine("      </Style>    ");

        writer.WriteLine("      <Style ss:ID='s31'>    ");

        writer.WriteLine("       <Borders>    ");

        writer.WriteLine("        <Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Right' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Top' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("       </Borders>    ");

        writer.WriteLine("       <Font ss:FontName='ＭＳ Ｐゴシック' x:CharSet='128' x:Family='Modern' ss:Size='11'/>    ");

        writer.WriteLine("       <Interior ss:Color='#CCFFFF' ss:Pattern='Solid'/>    ");

        writer.WriteLine("      </Style>    ");

        writer.WriteLine("      <Style ss:ID='s32'>    ");

        writer.WriteLine("       <Alignment ss:Vertical='Bottom' ss:WrapText='1'/>    ");

        writer.WriteLine("       <Borders>    ");

        writer.WriteLine("        <Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Left' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Right' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Top' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("       </Borders>    ");

        writer.WriteLine("       <Font ss:FontName='ＭＳ Ｐゴシック' x:CharSet='128' x:Family='Modern' ss:Size='11'/>    ");

        writer.WriteLine("       <Interior ss:Color='#CCFFFF' ss:Pattern='Solid'/>    ");

        writer.WriteLine("      </Style>    ");

        writer.WriteLine("      <Style ss:ID='s33'>    ");

        writer.WriteLine("       <Alignment ss:Vertical='Bottom' ss:WrapText='1'/>    ");

        writer.WriteLine("      </Style>    ");

        writer.WriteLine("      <Style ss:ID='s34'>    ");

        writer.WriteLine("       <Alignment ss:Vertical='Bottom' ss:WrapText='1'/>    ");

        writer.WriteLine("       <Borders>    ");

        writer.WriteLine("        <Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Left' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Right' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Top' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("       </Borders>    ");

        writer.WriteLine("       <Font ss:FontName='ＭＳ Ｐゴシック' x:CharSet='128' x:Family='Modern' ss:Size='11'/>    ");

        writer.WriteLine("       <Interior/>    ");

        writer.WriteLine("      </Style>    ");

        writer.WriteLine("      <Style ss:ID='s35'>    ");

        writer.WriteLine("       <Borders>    ");

        writer.WriteLine("        <Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Left' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Right' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Top' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("       </Borders>    ");

        writer.WriteLine("       <Font ss:FontName='ＭＳ Ｐゴシック' x:CharSet='128' x:Family='Modern' ss:Size='11'/>    ");

        writer.WriteLine("       <Interior/>    ");

        writer.WriteLine("      </Style>    ");

        writer.WriteLine("      <Style ss:ID='s36'>    ");

        writer.WriteLine("       <Borders>    ");

        writer.WriteLine("        <Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Left' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Right' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Top' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("       </Borders>    ");

        writer.WriteLine("       <Font ss:FontName='ＭＳ Ｐゴシック' x:CharSet='128' x:Family='Modern' ss:Size='11'/>    ");

        writer.WriteLine("       <Interior ss:Color='#FFFF99' ss:Pattern='Solid'/>    ");

        writer.WriteLine("       <Protection ss:Protected='0'/>    ");

        writer.WriteLine("      </Style>    ");

        writer.WriteLine("      <Style ss:ID='s37'>    ");

        writer.WriteLine("       <Borders>    ");

        writer.WriteLine("        <Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Left' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Right' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Top' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("       </Borders>    ");

        writer.WriteLine("       <Font ss:FontName='ＭＳ Ｐゴシック' x:CharSet='128' x:Family='Modern' ss:Size='11'/>    ");

        writer.WriteLine("       <Interior/>    ");

        writer.WriteLine("      </Style>    ");

        writer.WriteLine("      <Style ss:ID='s38'>    ");

        writer.WriteLine("       <Borders>    ");

        writer.WriteLine("        <Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Left' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Right' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Top' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("       </Borders>    ");

        writer.WriteLine("       <Font ss:FontName='ＭＳ Ｐゴシック' x:CharSet='128' x:Family='Modern' ss:Size='11'/>    ");

        writer.WriteLine("       <Interior/>    ");

        writer.WriteLine("      </Style>    ");

        writer.WriteLine("      <Style ss:ID='s39'>    ");

        writer.WriteLine("       <Borders>    ");

        writer.WriteLine("        <Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Left' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Right' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("        <Border ss:Position='Top' ss:LineStyle='Continuous' ss:Weight='1'/>    ");

        writer.WriteLine("       </Borders>    ");

        writer.WriteLine("       <Font ss:FontName='ＭＳ Ｐゴシック' x:CharSet='128' x:Family='Modern' ss:Size='11'/>    ");

        writer.WriteLine("       <Interior/>    ");

        writer.WriteLine("      </Style>    ");

        writer.WriteLine("     </Styles>    ");

        //Sheet操作

        writer.WriteLine("<Worksheet ss:Name='" + dr["Msg030"] + "'>");

        writer.WriteLine("  <Table ss:ExpandedColumnCount='9' ss:ExpandedRowCount='3000' x:FullColumns='1' x:FullRows='1' ss:StyleID='s33' ss:DefaultColumnWidth='54' ss:DefaultRowHeight='13.5'>");

        writer.WriteLine("<Column ss:StyleID='s34' ss:AutoFitWidth='0' ss:Width='110.25'/>");

        writer.WriteLine("<Column ss:StyleID='s34' ss:AutoFitWidth='0' ss:Width='33.75'/>");

        writer.WriteLine("<Column ss:StyleID='s34' ss:AutoFitWidth='0' ss:Width='118.5'/>");

        writer.WriteLine("<Column ss:StyleID='s34' ss:AutoFitWidth='0' ss:Width='159.75'/>");

        writer.WriteLine("<Column ss:StyleID='s34' ss:AutoFitWidth='0' ss:Width='147.75' ss:Span='4'/>");

        for (int num = sheetNum - 1; num >= 0; num = num - 1)

        {

            // 考課表間有3行的空行

            if (num != sheetNum - 1)

            {

                writer.WriteLine("<Row>");

                writer.WriteLine("</Row>");

                writer.WriteLine("<Row>");

                writer.WriteLine("</Row>");

                writer.WriteLine("<Row>");

                writer.WriteLine("</Row>");

            }

            // 列名

            writer.WriteLine("<Row ss:Height='40.5'>");

            writer.WriteLine("<Cell ss:StyleID='s32'><Data ss:Type='String'>" + dr["Msg002"] + "</Data></Cell>");

            writer.WriteLine("<Cell ss:StyleID='s32'><Data ss:Type='String'>" + dr["Msg003"] + "</Data></Cell>");

            writer.WriteLine("<Cell ss:StyleID='s32'><Data ss:Type='String'>" + dr["Msg004"] + "</Data></Cell>");

            writer.WriteLine("</Row>");

            // 详细数据

            for (int i = 0; i < ds.Tables[2 * num].Rows.Count; i++)

            {

                writer.WriteLine("<Row ss:Height='27'>");

                writer.WriteLine("<Cell><Data ss:Type='String'>" + ds.Tables[2 * num].Rows[i]["EvalLevel1Name"].ToString() + "</Data></Cell>");

                writer.WriteLine("<Cell><Data ss:Type='Number'>" + ds.Tables[2 * num].Rows[i]["EvalLevel2Code"].ToString() + "</Data></Cell>");

                writer.WriteLine("<Cell><Data ss:Type='String'>" + ds.Tables[2 * num].Rows[i]["EvalLevel2Name"].ToString() + "</Data></Cell>");

                writer.WriteLine("</Row>");

            }

        }

        writer.WriteLine(" </Table>");

        writer.WriteLine(" </Worksheet>");

        // 其他Sheet操作

        for (int num = sheetNum - 1; num >= 0; num--)

        {

            writer.WriteLine("<Worksheet ss:Name='" + ds.Tables[2 * num].Rows[0][1].ToString() + "' ss:Protected='1'>");

            writer.WriteLine("  <Table ss:ExpandedColumnCount='31' ss:ExpandedRowCount='30000' x:FullColumns='1' x:FullRows='1' ss:StyleID='s25' ss:DefaultColumnWidth='54' ss:DefaultRowHeight='13.5'>");

            writer.WriteLine(" <Row>");

            writer.WriteLine("<Cell ss:StyleID='s26'><PhoneticText xmlns='urn:schemas-microsoft-com:office:excel'>カキキイロテンスウツ</PhoneticText><Data ss:Type='String'>" + dr["Msg031"] + "</Data></Cell>");

            writer.WriteLine("<Cell ss:Index='14' ss:StyleID='Default'/>");

            writer.WriteLine("<Cell ss:StyleID='Default'/>");

            writer.WriteLine("<Cell ss:StyleID='Default'/>");

            writer.WriteLine("<Cell ss:StyleID='Default'/>");

            writer.WriteLine("<Cell ss:StyleID='Default'/>");

            writer.WriteLine("<Cell ss:StyleID='Default'/>");

            writer.WriteLine("<Cell ss:StyleID='Default'/>");

            writer.WriteLine("<Cell ss:StyleID='Default'/>");

            writer.WriteLine("<Cell ss:StyleID='Default'/>");

            writer.WriteLine("</Row>");

            writer.WriteLine(" <Row>");

            writer.WriteLine("<Cell ss:StyleID='s26'><PhoneticText xmlns='urn:schemas-microsoft-com:office:excel'>カキキイロテンスウツ</PhoneticText><Data ss:Type='String'>" + dr["Msg032"] + "</Data></Cell>");

            writer.WriteLine("<Cell ss:Index='14' ss:StyleID='Default'/>");

            writer.WriteLine("<Cell ss:StyleID='Default'/>");

            writer.WriteLine("<Cell ss:StyleID='Default'/>");

            writer.WriteLine("</Row>");

            // 列名

            writer.WriteLine("<Row>");

            writer.WriteLine("<Cell ss:StyleID='s27'><Data ss:Type='String'>" + dr["Msg001"] + "</Data></Cell>");

            writer.WriteLine("<Cell ss:StyleID='s28'><Data ss:Type='String'>" + dr["Msg002"] + "</Data></Cell>");

            writer.WriteLine("<Cell ss:StyleID='s28'><Data ss:Type='String'>" + dr["Msg003"] + "</Data></Cell>");

            writer.WriteLine("</Row>");

            int SheetN = ds.Tables[2 * num].Rows.Count;

            //详细数据

            for (int i = 0; i < SheetN; i++)

            {

                writer.WriteLine("<Row>");

                writer.WriteLine("<Cell ss:StyleID='s35'><Data ss:Type='Number'>" + ds.Tables[2 * num].Rows[i]["EvalLevel1Code"].ToString() + "</Data></Cell>");

                writer.WriteLine("<Cell ss:StyleID='s35'><Data ss:Type='String'>" + ds.Tables[2 * num].Rows[i]["EvalLevel1Name"].ToString() + "</Data></Cell>");

                writer.WriteLine("<Cell ss:StyleID='s35'><Data ss:Type='Number'>" + ds.Tables[2 * num].Rows[i]["EvalLevel2Code"].ToString() + "</Data></Cell>");

                writer.WriteLine("<Cell><Data ss:Type='String'> </Data></Cell>");

                writer.WriteLine("</Row>");

            }

            writer.WriteLine("<Row>");

            writer.WriteLine("</Row>");

            writer.WriteLine("<Row>");

            writer.WriteLine("</Row>");

            //列名

            writer.WriteLine("<Row>");

            writer.WriteLine("<Cell ss:StyleID='s29'><Data ss:Type='String'>" + dr["Msg011"] + "</Data></Cell>");

            writer.WriteLine("<Cell ss:StyleID='s30'/>");

            writer.WriteLine("<Cell ss:StyleID='s31'/>");

            writer.WriteLine("<Cell ss:StyleID='s29'><Data ss:Type='String'>" + dr["Msg012"] + "</Data></Cell>");

            writer.WriteLine("<Cell ss:StyleID='s31'/>");

            writer.WriteLine("<Cell ss:StyleID='s29'><Data ss:Type='String'>" + dr["Msg013"] + "</Data></Cell>");

            writer.WriteLine("<Cell ss:StyleID='s30'/>");

            writer.WriteLine("<Cell ss:StyleID='s30'/>");

            writer.WriteLine("<Cell ss:StyleID='s30'/>");

            writer.WriteLine("<Cell ss:StyleID='s31'/>");

            writer.WriteLine("<Cell ss:StyleID='s29'><Data ss:Type='String'>" + dr["Msg014"] + "</Data></Cell>");

            writer.WriteLine("<Cell ss:StyleID='s31'/>");

            writer.WriteLine("<Cell ss:StyleID='s29'><Data ss:Type='String'>" + dr["Msg015"] + "</Data></Cell>");

            writer.WriteLine("<Cell ss:StyleID='s31'/>");

            writer.WriteLine("</Row>");

            writer.WriteLine("<Row>");

            writer.WriteLine("<Cell ss:StyleID='s28'><Data ss:Type='String'>" + dr["Msg016"] + "</Data></Cell>");

            writer.WriteLine("<Cell ss:StyleID='s28'><Data ss:Type='String'>" + dr["Msg017"] + "</Data></Cell>");

            writer.WriteLine("<Cell ss:StyleID='s28'><Data ss:Type='String'>" + dr["Msg018"] + "</Data></Cell>");

            writer.WriteLine("<Cell ss:StyleID='s28'><Data ss:Type='String'>" + dr["Msg019"] + "</Data></Cell>");

            writer.WriteLine("</Row>");

            int DateLen = ds.Tables[2 * num + 1].Rows.Count;

            string EmployeeManagement = "";

            for (int i = 0; i < DateLen; i++)

            {

                writer.WriteLine("<Row>");

                writer.WriteLine("<Cell ss:StyleID='s37'><Data ss:Type='Number'>" + ds.Tables[2 * num + 1].Rows[i]["EmployeeManagementID"].ToString() + "</Data></Cell>");

                if (!EmployeeManagement.Equals(ds.Tables[2 * num + 1].Rows[i]["EmployeeManagementID"].ToString()))

                {

                    writer.WriteLine("<Cell ss:StyleID='s35'><Data ss:Type='Number'>" + ds.Tables[2 * num + 1].Rows[i]["EmployeeCode"].ToString() + "</Data></Cell>");

                    writer.WriteLine("<Cell ss:StyleID='s35'><Data ss:Type='String'>" + ds.Tables[2 * num + 1].Rows[i]["EmployeeName"].ToString() + "</Data></Cell>");

                    writer.WriteLine("<Cell ss:StyleID='s35'><Data ss:Type='String'>" + ds.Tables[2 * num + 1].Rows[i]["BefEmployeeName2"].ToString() + "</Data></Cell>");

                    writer.WriteLine("<Cell ss:StyleID='s35'><Data ss:Type='String'>" + ds.Tables[2 * num + 1].Rows[i]["EmployeeName2"].ToString() + "</Data></Cell>");

                    writer.WriteLine("<Cell ss:StyleID='s38'><Data ss:Type='Number'>" + ds.Tables[2 * num + 1].Rows[i]["EvalLevel1Code"].ToString() + "</Data></Cell>");

                    writer.WriteLine("<Cell ss:StyleID='s35'><Data ss:Type='String'>" + ds.Tables[2 * num + 1].Rows[i]["EvalLevel1Name"].ToString() + "</Data></Cell>");

                    EmployeeManagement = ds.Tables[2 * num + 1].Rows[i]["EmployeeManagementID"].ToString();

                }

                else

                {

                    writer.WriteLine("<Cell ss:StyleID='s35'><Data ss:Type='String'></Data></Cell>");

                    writer.WriteLine("<Cell ss:StyleID='s35'><Data ss:Type='String'></Data></Cell>");

                    writer.WriteLine("<Cell ss:StyleID='s35'><Data ss:Type='String'></Data></Cell>");

                    writer.WriteLine("<Cell ss:StyleID='s35'><Data ss:Type='String'></Data></Cell>");

                    writer.WriteLine("<Cell ss:StyleID='s38'><Data ss:Type='String'></Data></Cell>");

                    writer.WriteLine("<Cell ss:StyleID='s35'><Data ss:Type='String'></Data></Cell>");

                }

                writer.WriteLine("<Cell ss:StyleID='s39'><Data ss:Type='Number'>" + ds.Tables[2 * num + 1].Rows[i]["EvalLevel2Code"].ToString() + "</Data></Cell>");

                writer.WriteLine("<Cell ss:StyleID='s35'><Data ss:Type='String'>" + ds.Tables[2 * num + 1].Rows[i]["EvalLevel2Name"].ToString() + "</Data></Cell>");

                writer.WriteLine("</Row>");

            }

            writer.WriteLine(" </Table>");

            writer.WriteLine(" </Worksheet>");

        }

        writer.WriteLine("</Workbook>");

        writer.Close();

        FileDownload(ExcelFileName);

    }

    catch (System.Exception ex)

    {

    }

    finally

    {

        Response.End();

    }

}

public void FileDownload(FullFileName)

{

    FileInfo DownloadFile = new FileInfo(FullFileName);

    Response.Clear();

    Response.ClearHeaders();

    Response.Buffer = true;

    Response.AppendHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(System.Text.Encoding.UTF8.GetBytes(MyFile".xls")));

    Response.ContentType = "application/ms-excel;charset=UTF-8";//DownloadFile.FullNameoctet-stream

    Response.ContentEncoding = System.Text.Encoding.GetEncoding("shift-jis");

    Response.AppendHeader("Content-Length", DownloadFile.Length.ToString());

    Response.WriteFile(FullFileName);

    Response.Flush();

    if (File.Exists(FullFileName))

    {

        File.Delete(FullFileName);

    }

}

方法四 用微软的COM组件操作Excel。虽然可以很方便的操作单元格，并且能保留VBA代码，它相当于直接打开一个EXCEL进程。

当初这个COM组件式给WinForm准备的，但在Web端有很多东西的支持不尽人意，例如无法用组件中的方法关闭Excel对象，

只能通过强制关闭Excel进程的方式(这其中还有很多问题，例如只能关闭当前打开的这个Excel的进程，否则会把其他用户的Excel进程关闭)。在这里不推荐

方法五 用流的方式，把内容以HTML的格式向Excel中输出数据好处是可以生成格式丰富复杂的Excel，页面无刷新

aspx部分

<asp:Button ID="hidExport" onClick="hidExport_Click()" Runat="server"></asp:Button>

　　aspx.cs部分

//内容很好理解，只需当成Table来拼字符串即可

private string getExcelContent()

{

    StringBuilder sb = new StringBuilder();            

    sb.Append("<table borderColor='black' border='1' >");

    sb.Append("<thead><tr><th colSpan='2' bgColor='#ccfefe'>标题</th></tr>");

    sb.Append("<tr><th bgColor='#ccfefe'>号码</th><th bgColor='#ccfefe'>名字</th></tr></thead>");

    sb.Append("<tbody>");

    sb.Append("<tr class='firstTR'><td bgcolor='#FF99CC'></td><td></td></tr>");

    sb.Append("<tr class='secondTR'><td></td><td bgcolor='lightskyblue'></td></tr>");

    sb.Append("</tbody></table>");

    return sb.ToString();

}

private void hidExport_Click(object sender, System.EventArgs e)

{

    string content = getExcelContent();

    string css = ".firstTR td{color:blue;width:100px;}.secondTR td{color:blue;width:100px;}";

    string filename = "Test.xls";

    CommonTool.ExportToExcel(filename, content ,css);

}

　　工具类CommonTool

public class CommonTool

{

    /// <summary>

    /// 以流的形式，可以设置很丰富复杂的样式

    /// </summary>

    /// <param name="content">Excel中内容(Table格式)</param>

    /// <param name="filename">文件名</param>

    /// <param name="cssText">样式内容</param>

    public static void ExportToExcel(string filename, string content,string cssText)

    {

        var res = HttpContext.Current.Response;

        content = String.Format("<style type='text/css'>{0}</style>{1}",cssText,content);

        res.Clear();

        res.Buffer = true;

        res.Charset = "UTF-8";

        res.AddHeader("Content-Disposition", "attachment; filename=" + filename);

        res.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");

        res.ContentType = "application/ms-excel;charset=UTF-8";

        res.Write(content);

        res.Flush();

        res.End();

    }

}

这种方法比较灵活，而且可以通过选择器来添加样式，相当不错。缺点就是需要将数据转换成字符串。

上面的方式是，通过WebForm控件调用后台方法，在后台方法中从数据源获取并整合成要导出的内容，然后输出；

对这种方式稍加升级，就可以处理导出页面内容到Excel。大体思路：

在前端页面通过js获取要导出到Excel的html内容
将内容传输到后端
后端接收数据（例如ashx、Controller、aspx.cs）
后端对数据进行处理，并输出到前端页面（还是使用上面的工具类方法ExportToExcel）

麻烦的地方在第2步，要面对的问题有两个：

因为这里需要将数据传到后端，同时还要下载文件，所以使用ajax是不行了，只能使用form post表单数据
上传数据、下载文件的时候不能刷新页面

由这两点出发，解决方式如下：

var excelInfo = document.getElementById("excelArea").innerHTML;//获取要导出到Excel的内容

var actionTarget = "/ExcelExportController/Export"; //接收Excel数据的后端接口

var excelStr = ''/

    +'<div'/

    +'   <form id="excelForm" action="' + actionTarget + '" method="post" enctype="application/x-www-form-urlencoded" target="exportFormFrame">'/

    +'       <input name="excelInfo" type="hidden" value="' + excelInfo + '" />'/

    +'   </form>'/

    +'   <iframe name="exportFormFrame" id="exportFormFrame" style="width: 0px;height: 0px;display:none;"></iframe>'/

    +'</div>';

$(document.body).append(excelStr);

$('#excelForm').submit();

注：直接向Excel输出html有几个注意点：

单元格内换行 <br style='mso-data-placement:same-cell;'/>
设置表格的边框样式 borderColor='black' border='1'
设置行高列宽要使用pt，px无效（也许有其他原因，我测试的是这样）
excel空余部分边框的问题。用此方法输出的excel，空余部分边框都不显示，如果要做成想普通excel的样子，需在输出流的head部分加上excel的设置

<!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name></x:Name><x:WorksheetOptions>

<x:Selected/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]-->

附：

1.动态的让单元格中的内容换行

例原内容是 博客园是面向开发者的知识分享社区，不允许发布任何推广、广告、政治方面的内容

目标状态是

博客园是面向开发者的知识分享社区

不允许发布任何推广、广告、政治方面的内容

　　则只需将程序中要填入该单元格的内容改成如下格式即可【即在换行处加 &CHAR(10)& 即可】

="博客园是面向开发者的知识分享社区"&CHAR(10)&"不允许发布任何推广、广告、政治方面的内容"

　　2.通过IE生成文件的时候，经常会出现文件名乱码的情况，只需要如下方式对文件名编码即可

string excelName="数据导出.xls";

excelName = HttpUtility.UrlEncode(Encoding.UTF8.GetBytes(excelName));

转载出处：http://www.cnblogs.com/TiestoRay/archive/2013/02/02/2576134.html

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