UI upload多文件上传

cs:

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

public class WebForm1 : System.Web.UI.Page {
    protected ComponentArt.Web.UI.Upload Upload1;

  private bool IsOnWebSite()
  {
    return Request.Url.ToString().ToLower().Contains(".componentart.com");
  }

  private void Page_Load(object sender, System.EventArgs e)
  {
    Upload1.TempFileFolder = Server.MapPath("~/uploads/temp");

    if (!IsOnWebSite())
    {
      Upload1.DestinationFolder = Server.MapPath("~/uploads");
    }
  }

    #region Web Form Designer generated code
    override protected void OnInit(EventArgs e) {
        InitializeComponent();
        base.OnInit(e);
    }
    private void InitializeComponent() {
        this.Load += new System.EventHandler(this.Page_Load);
    }
    #endregion
}

web.confing:

<httpHandlers>

  <add verb="*" type="ComponentArt.Web.UI.UploadProgressHandler,ComponentArt.Web.UI" path="ComponentArtUploadProgress.axd"/>
</httpHandlers>


<httpModules>

  <add type="ComponentArt.Web.UI.UploadModule,ComponentArt.Web.UI" name="ComponentArtUploadModule"/>
</httpModules>