private void CBRankDesc_SelectionChanged(object sender, SelectionChangedEventArgs e) { TBikeDAL MyDAL = new TBikeDAL(); DataTable ResultTable = MyDAL.ShowEmployeeRankByID(CBRankDesc.SelectedValue.ToString().Trim()); TBRankNo.Text = Convert.ToString(ResultTable.Rows[0]["EmployeeRank"]); TBRankDescModify.Text = Convert.ToString(ResultTable.Rows[0]["EmployeeRankDesc"]); }