private void btnDelete_Click(object sender, EventArgs e)
 {
     try
     {
         wnDm wDm   = new wnDm();
         int  rsNum = wDm.delete_counter_code(txtCode.Text.ToString());
         if (rsNum == 0)
         {
             MessageBox.Show("성공적으로 삭제하였습니다");
             resetSetting();
             selectGrid();
             return;
         }
         else if (rsNum == 1)
         {
             MessageBox.Show("저장에 실패하였습니다");
             return;
         }
         else
         {
             MessageBox.Show("Exception 오류");
             return;
         }
     }
     catch (Exception ex)
     {
         MessageBox.Show("Excpetion 오류");
         return;
     }
 }