protected void assistantGridView_RowDeleting(object sender, GridViewDeleteEventArgs e) { int row = e.RowIndex; Label lbl = (Label)assistantGridView.Rows[row].FindControl("Label1"); string userId = lbl.Text; bool flag = aManager.Delete(userId); if (flag == true) { msgLabel.Text = "Delete Successfully !"; assistantGridView.DataSource = aManager.ShowAllAssistants(); assistantGridView.DataBind(); } else { msgLabel.Text = "Not Deleted !"; } }