/// <summary>
 /// delete data by criterionGroupId
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 protected void Delete(object sender, DirectEventArgs e)
 {
     try
     {
         //delete
         EvaluationController.DeleteByCondition(null, null);
         //reload
         gpEvaluation.Reload();
     }
     catch (Exception exception)
     {
         Dialog.ShowError(exception);
     }
 }