.NET 读取本地文件绑定到GridViewRow

wjgl.aspx.cs:

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
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.Xml.Linq;
using System.IO;
using DBUtility;

namespace qhsy.DWJSC
{
    public partial class wjgl : System.Web.UI.Page
    {

        protected string File_List = "";

        protected void Page_Load(object sender, EventArgs e)
        {
            if (Page.IsPostBack == false)
            {

                if (Request.UrlReferrer.ToString().Contains("wjsc.aspx")==false)
                {
                    //保存上一页的url传递到wjsc.aspx
                    HttpCookie cookie = new HttpCookie("back");
                    cookie.Values.Add("url", Request.UrlReferrer.ToString());
                    Response.AppendCookie(cookie);
                }

                lb_title.Text = "文 件 管 理";

                //是否查询
                string sfcx = Request.QueryString["sfcx"];
                if (sfcx == "")
                {
                    //gridFileList.Columns[0].Visible = false;
                    bg.Visible = false;

                }

                ////是否图片
                //string sftp = Request.QueryString["sftp"];
                //if (sftp == "1")
                //{
                //    //GridView中添加图片缩略图
                //    gridFileList.Columns[2].Visible = true;
                //}

                //操作模块id,参数
                ViewState["shmkid"] = Request.QueryString["shmkid"];
                //路径信息    fj = "~/File/JYWJ/8910427356/5209168734/";
                ViewState["fj"] = Request.QueryString["fj"];

                string path = string.Format("{0}", (string)ViewState["fj"]);
                path = Server.MapPath(path);
                ixExit(path);

                 //设定初始排序字段为文件修改时间FileLastWriteTime
                 gridFileList.Attributes.Add("SortExpression", "FileLastWriteTime");
                 gridFileList.Attributes.Add("SortDirection", "DESC");
                 BindGrid();

            }

        }

        //绝对路径（目录）是否存在，不存在则创建
        private void ixExit(string path)
        {
            if (!Directory.Exists(path))
            {
                Directory.CreateDirectory(path);
            }

        }

        //读取本地文件绑定到GridViewRow
        protected void gridFileList_RowDataBound(object sender, GridViewRowEventArgs e)
        {

            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                Image Img = (Image)e.Row.Cells[].FindControl("ImgPath");
                Img.ImageUrl = e.Row.Cells[].Text;
                e.Row.Cells[].Text = "";

            }
            DataClass.Comm.gv_hbs(sender, e);
        }

        //分页
        protected void gridFileList_PageIndexChanging(object sender, GridViewPageEventArgs e)
        {
            gridFileList.PageIndex = e.NewPageIndex;
            this.BindGrid();
        }

        //绑定gridview
        private void BindGrid()
        {
            //获取数据源
            DataTable dtb = FileDataTable();

            //排序
            string SortDirection = gridFileList.Attributes["SortDirection"].ToString();
            string SortExpression = gridFileList.Attributes["SortExpression"].ToString();
            dtb.DefaultView.Sort = string.Format("{0} {1}", SortExpression, SortDirection);

            //赋数据源并绑定
            gridFileList.DataSource = dtb;
            gridFileList.DataBind();
            gridFileList.Visible = gridFileList.Rows.Count > ;
            gridFileList.Attributes.Add("BorderColor", "#000000");

        }

        private DataTable FileDataTable()
        {
            string fj = (string)ViewState["fj"];
            string path = Server.MapPath(fj);
            GetFiles(path);

            //构造DataTABLE
            DataTable dt = new DataTable();
            dt.Columns.Add(new DataColumn("FilePath", typeof(string)));
            dt.Columns.Add(new DataColumn("FileName", typeof(string)));
            dt.Columns.Add(new DataColumn("FileLength", typeof(string)));
            dt.Columns.Add(new DataColumn("FileLastWriteTime", typeof(string)));
            DataRow dr;

            //将文件数组集合切割到数组

            string[] dtaArry = File_List.Split(',');

            for (int i = ; i < dtaArry.Length; i++)
            {

                if (dtaArry[i].Trim() != "")//判断是否为空
                {

                    dr = dt.NewRow();
                    dr[] = dtaArry[i];//文件路径
                    dr[] = Path.GetFileName(dtaArry[i]);//文件名

                    //获取文件大小(Decimal.Round(Convert.ToDecimal(FI.Length), 2)

                    string FIer = dtaArry[i].ToString();
                    FileInfo FI = new FileInfo(FIer);
                    dr[] = Convert.ToString(Decimal.Round(Convert.ToDecimal(FI.Length / ), )) + "KB";//获取的是字节byte，还需要转换为千字节KB

                    dr[] = FI.LastWriteTime;
                    dt.Rows.Add(dr);

                }

            }

            return dt;

        }

        //遍文件夹下的所有子文件夹下的文件
        public void GetFiles(string ObjDirPath)
        {
            DirectoryInfo SourceDir = new DirectoryInfo(ObjDirPath);
            foreach (FileSystemInfo FSI in SourceDir.GetFileSystemInfos())
            {

                if (FSI is DirectoryInfo)
                {

                    //如果是文件夹则递归
                    GetFiles(FSI.FullName);
                }

                else
                {
                    string FilePath = "";
                    FilePath = FSI.FullName.ToLower();

                    string fj = (string)ViewState["fj"];
                    string mc = fj.Substring(, );

                   //FilePath = FilePath.Substring(FilePath.LastIndexOf(mc));
                   File_List += FilePath + ",";

                }

            }

        }

        //排序
        protected void gridFileList_Sorting(object sender, GridViewSortEventArgs e)
        {

            string sortExpression = e.SortExpression.ToString();
            string sortdirection = "ASC";

            if (sortExpression == gridFileList.Attributes["SortExpression"])
            {

                sortdirection = (gridFileList.Attributes["SortDirection"].ToString() == sortdirection ? "DESC" : "ASC");

            }

            gridFileList.Attributes["SortExpression"] = sortExpression;
            gridFileList.Attributes["SortDirection"] = sortdirection;
            this.BindGrid();

        }

        protected void btnDel_Click(object sender, EventArgs e)
        {
            try
            {

                FileInfo fileinfo;
                bool IsSelect = false;

                for (int i = ; i < gridFileList.Rows.Count; i++)
                {

                    GridViewRow row = gridFileList.Rows[i];

                    if (((CheckBox)row.FindControl("chkDel")).Checked)
                    {

                        IsSelect = true;
                        Image Img = (Image)gridFileList.Rows[i].Cells[].FindControl("ImgPath");
                        fileinfo = new FileInfo(Img.ImageUrl);
                        if (fileinfo.Exists)
                        {
                            fileinfo.Delete();
                            //根据ccid删除表jy_wj_wjccb中的数据
                            string str = string.Format("delete from jy_wj_wjccb where fj='{0}'", Img.ImageUrl.Substring(, Img.ImageUrl.Length-));
                            DbHelperSQL.Query(str);
                        }
                    }
                }
                if (IsSelect)
                {
                    DataClass.Comm.Alert(Page, "删除成功！");

                }
                else
                {

                    DataClass.Comm.Alert(Page, "请选择要删除的行！");

                }
            }
            catch (Exception ex)
            {
                //DataClass.Comm.Alert(Page, ex.ToString());
            }

            BindGrid();
        }

        protected void btnAdd_Click(object sender, EventArgs e)
        {

            string s = string.Format("~/DWJSC/wjsc.aspx?shmkid={0}&&fj={1}&&sfcg={2}",(string)ViewState["shmkid"], (string)ViewState["fj"], );
            Response.Redirect(s);  

        }

        protected void btBack_Click(object sender, EventArgs e)
        {

            Response.Redirect((Request.Cookies["back"].Values["url"]).ToString());

            //清空Cookies["back"]
            Response.Cookies["back"].Expires = DateTime.Now.AddDays(-);  

        }

    }
}

wjgl.aspx:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="wjgl.aspx.cs" Inherits="qhsy.DWJSC.wjgl" %>

<!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>文件管理</title>
    <link href="../COMM/CSS/CSS.css" rel="stylesheet" type="text/css" />
    <style type="text/css">

        #wjgl
    {
        background:#F2FBE5; text-align:center;  vertical-align:middle;
        width:%;
        height: 714px;
    }
        #div
        {
            height: 701px;
        }
    </style>
    <script type="text/javascript">
        function SelAllClick() {
          var isSelAll = document.getElementById("gridFileList_ctl01_CheckAll").checked;
          for (var i = ; i < ; i++) {
            if (i < ) checkBoxId = "gridFileList_ctl0" + i + "_chkDel";
            else checkBoxId = "gridFileList_ctl" + i + "_chkDel";
            var checkBoxObj = document.getElementById(checkBoxId);
            if (checkBoxObj == undefined || checkBoxObj == null) break;
            checkBoxObj.checked = isSelAll;
          }
        }
    </script>
</head>

<body class="body">
    <form id="form1" runat="server">
    <div id="div" class="div">

    <div id="wjgl">

      <table width="100%">

      <tr>

        <td>

         <div class="divtitle" >
                <asp:Panel ID="Panel4"  CssClass="pan"  runat="server" >
                    <asp:Label ID="lb_title" runat="server"  CssClass="lab"   Text=""></asp:Label>
                </asp:Panel>
            </div>    

        </td>

      </tr>

      <tr>

        <td>

             <asp:GridView  runat="server" ID="gridFileList"
                 Width="100%"    HeaderStyle-Height=""              

                  OnRowDataBound="gridFileList_RowDataBound" AllowPaging="True"

                 PageSize="" OnPageIndexChanging="gridFileList_PageIndexChanging"

                  onsorting="gridFileList_Sorting" BorderStyle="None"
                 AutoGenerateColumns="false"  >

        <Columns>

        <asp:TemplateField ItemStyle-CssClass="divcheck"  > 

        <ItemStyle HorizontalAlign="Center" />

                <HeaderTemplate>&nbsp;<input id="CheckAll" type="checkbox" onclick="SelAllClick();"  runat="server"/></HeaderTemplate>              

                <ItemTemplate>

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

                </ItemTemplate>

            </asp:TemplateField>

            <asp:TemplateField HeaderText="序号" InsertVisible="False">

              <ItemStyle HorizontalAlign="Center" />

             <ItemTemplate>

                 <asp:Label ID="Label2" runat="server" Text='<%# this.gridFileList.PageIndex * this.gridFileList.PageSize + this.gridFileList.Rows.Count + 1%>'/>

            </ItemTemplate>

            </asp:TemplateField> 

             <asp:TemplateField HeaderText="图片"  Visible="false" InsertVisible="False" >

              <ItemStyle HorizontalAlign="Center" />

             <ItemTemplate>

                 <asp:Image ID="ImgPath" runat="server" Width="" Height="" />

            </ItemTemplate>

            </asp:TemplateField> 

           <asp:BoundField DataField="FileName" HeaderText="名称" SortExpression="FileName" >

                <ItemStyle HorizontalAlign="Center" />

            </asp:BoundField> 

            <asp:BoundField DataField="FileLength"  HeaderText="大小" SortExpression="FileLength" >

                <ItemStyle HorizontalAlign="Center" />

            </asp:BoundField> 

               <asp:BoundField DataField="FilePath"    SortExpression="FilePath">

                <ItemStyle HorizontalAlign="Center" />

            </asp:BoundField>

            <asp:BoundField DataField="FileLastWriteTime" HeaderText="修改时间" SortExpression="FileLastWriteTime" >

                <ItemStyle HorizontalAlign="Center" />

            </asp:BoundField> 

        </Columns>

    </asp:GridView>

        </td>

      </tr>

       <tr id="bg" runat="server">
            <td align="center" class="sub_bg">
                <asp:Button runat="server" ID="btnAdd" Text="添加文件" OnClick="btnAdd_Click" style="height: 26px" />&nbsp;
            <asp:Button runat="server" ID="btnDel" Text="删除文件" OnClick="btnDel_Click" OnClientClick="return confirm('提示：确定要删除吗？');" />
            &nbsp;

                <asp:Button ID="btBack" runat="server" Text="返回上一页" onclick="btBack_Click" />

                </td>
        </tr>
     </table>

    </div>
     </div>
    </form>
</body>
</html>