private void LoadPhanQuyen()
 {
     try
     {
         using (var k = new AppCode.QuanCafe())
         {
             // MessageBox.Show(cbbChucVuPQ.ValueMember);
             grvDSQuyen.DataSource = k.DSQuyenTheoCV(cbbChucVuPQ.SelectedValue.ToString());
         }
     }
     catch
     {
     }
 }