DataGrid Delete Command Confirm

   private void DataGridCategories_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
  {
   TableCell itemCell = e.Item.Cells[0];
   string item = itemCell.Text;
   
   if(DataGridCategories.Items.Count==1 && DataGridCategories.CurrentPageIndex!=0)
   {
    DataGridCategories.CurrentPageIndex =DataGridCategories.CurrentPageIndex-1;    
   }
   
   //刪除目錄
   string DeleteFolder = getpath(Server.MapPath("."),item);
   DirectoryInfo DirInfo = new DirectoryInfo(DeleteFolder);
   if(DirInfo.Exists && DirInfo.GetFiles().Length ==0 && DirInfo.GetDirectories().Length == 0)
   {
    DirInfo.Delete();
   }
   else
   {    
    Response.Redirect("AddCate.aspx?t=notdel");
    return;
   }
   
   //刪除資料表記錄
            string strSQL = "delete from KM_Filecate where ID="+item;
   Common.ExecuteNonQuery(strSQL);

            this.DataBindCategories("");
  }

  private void DeleteButton(DataGridItemEventArgs e)
  {
   LinkButton DeleteBtn;
   DeleteBtn = (LinkButton)e.Item.Cells[4].Controls[0];
   DeleteBtn.Text = "刪除";
   DeleteBtn.Attributes.Add("onclick", "return confirm('您真的要刪除第這條記錄嗎?');");   
  }

  private void DataGridCategories_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
  {
   switch(e.Item.ItemType)
   {
    case ListItemType.Item:
     DeleteButton(e);
     break;
    case ListItemType.AlternatingItem:
     DeleteButton(e);
     break;
    case ListItemType.EditItem:
     DeleteButton(e);
     break;
      
    default:
     break;
   }  
  }