}
   else
   {
    Page.RegisterStartupScript("script", "<script>alert(''请选择文件！'');</script>");
   }

  }

  private void Button2_Click(object sender, System.EventArgs e)
  {
   if(files.SelectedIndex>=0)
   {
    string fname=files.SelectedItem.Text;
    DataRow[] myrow=upfiles1.Select("FileName=''"+fname+"''");
    if(myrow.Length>0)
     upfiles1.Rows.Remove(myrow[0]);
    files.DataSource=upfiles1;
    files.DataBind();
   }
   else
   {
    Page.RegisterStartupScript("script", "<script>alert(''请选择文件！'');</script>");
   }

  }

  private void Button3_Click(object sender, System.EventArgs e)
  {
   if( upfiles1.Rows.Count > 0 )
   {
       SqlCommandBuilder myscb =new SqlCommandBuilder(upfiles2);
                upfiles2.InsertCommand=myscb.GetInsertCommand();
              

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