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# CODE Ô DANH MỤC FORM CHUNG

* object danh mục/ kiểm tra danh mục có cột A không?

```sql
// kiểm tra danh mục khachhang có cột 'mdvqhns' không
// nếu có, thì gán giá trị sang object 
if(myform.txtKhachHangMa.CurrentRow.Table.Columns.Contains("MDVQHNS"))
				myform.txtMDVQHNS.Text = myform.txtKhachHangMa.CurrentRow["MDVQHNS"].ToString();
```