遍历文件夹所有文件！

<asp:GridView ID="GridView1" runat="server" Width="632px" AutoGenerateColumns="False">
            <Columns>
                <asp:TemplateField HeaderText="文件名">
                    <ItemTemplate>
                        <a href='<%#Eval("FileShowPath") %>' target="_blank"><%#Eval("FileName") %></a>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="文件类型">
                     <ItemTemplate>
                        <%#Eval("FileType") %>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="文件大小">
                     <ItemTemplate>
                        <%#Eval("FileSize") %>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="文件修改时间">
                     <ItemTemplate>
                        <%#Eval("FileLastWrite") %>
                     </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>

public class AppCom
{
    public AppCom()
    {
        //
        // TODO: 在此处添加构造函数逻辑
        //
    }
    private string fileName;

    public string FileName
    {
        get { return fileName; }
        set { fileName = value; }
    }
    private string fileType;

    public string FileType
    {
        get { return fileType; }
        set { fileType=value; }
    }
    private string fileSize;

    public string FileSize
    {
        get { return fileSize; }
        set { fileSize = value; }
    }
    private string fileLastWrite;
    public string FileLastWrite
    {
        get { return fileLastWrite; }
        set { fileLastWrite = value; }
    }
    private string fileShowPath;
    public string FileShowPath
    {
        get { return fileShowPath; }
        set { fileShowPath = value; }
    }
}

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.IO;
using System.Collections.Generic;
using System.Text.RegularExpressions;
public partial class UploadFileManage : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            this.GridView1.DataSource = bindGridView();
            this.GridView1.DataBind();
        }
    }
    private List<AppCom> bindGridView()
    {
        string strPath = Server.MapPath(@"~/Images/");
        string showPath = AppDomain.CurrentDomain.BaseDirectory.Substring(0,AppDomain.CurrentDomain.BaseDirectory.Length-1);
        showPath=showPath.Substring(showPath.LastIndexOf("\\")+1);
        showPath = @"http://" + Request.Url.Authority + "/"+showPath + "/Images/";
        //string showPath = Request.Url.AbsoluteUri.Substring(0, 31) + "/Images/"+Request.Url.Authority;
        //string showPath = Page.Request.PhysicalApplicationPath + "Images\\";
        List<AppCom> fileList = new List<AppCom>();
        DirectoryInfo di = new DirectoryInfo(strPath);
        FileInfo[] files;
        try
        {
            files = di.GetFiles();
            foreach (FileInfo fi in files)
            {
                AppCom ac = new AppCom();
                ac.FileName = fi.Name;
                ac.FileSize = Convert.ToString(fi.Length);
                ac.FileType = fi.Extension;
                ac.FileLastWrite = fi.LastWriteTime.ToString();
                ac.FileShowPath = showPath + fi.Name;
                fileList.Add(ac);
            }
            return fileList;
        }
        catch (Exception)
        {

            throw;
        }
    }
    protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        //string fileName = this.GridView1.DataKeys[e.RowIndex].Values[0].ToString();
       // string fileName = this.GridView1.Rows[e.RowIndex].Cells[0].Text+this.GridView1.Rows[e.RowIndex].Cells[1].Text;
        string fileName = ((DataBoundLiteralControl)(this.GridView1.Rows[e.RowIndex].Cells[0].Controls[0])).Text.Trim();
        Match m = Regex.Match(fileName, @"(?<=<a[^>]*>)[\s\S]+?(?=</a>)", RegexOptions.IgnoreCase);
        if (m.Success)
        {
            fileName = m.Value;
        }
        File.Delete(Server.MapPath(@"~/Images/") + fileName);
        this.GridView1.DataSource = bindGridView();
        this.GridView1.DataBind();
        //List<AppCom> la = new List<AppCom>();
        
    }
}