ASP.net 里怎么对fileUpload控件上传的文件进行管理

using System.IO;protected void Page_Load(object sender, EventArgs e){if (!IsPostBack)   
     {            BindFileName();        }}    public void BindFileName()    {    
    DropDownList1.Items.Clear();      
  string path = Server.MapPath("你的文件夹的路径");        DirectoryInfo di = new DirectoryInfo(path);    
    foreach (FileInfo fi in di.GetFiles())   
     {            ListItem li = new ListItem();            li.Value = fi.FullName;         
   li.Text = fi.Name;     
       DropDownList1.Items.Add(li);        }  
  }//把文件夹里的文件名绑定到DropDownList1protected void Button3_Click(object sender, EventArgs e)   
 {//这里是删除按钮      
  File.Delete(DropDownList1.SelectedValue);     
   BindFileName();   
     Response.Write("<script>alert('删除成功')</script>");    }