protected void btnRemove_Click(object sender, EventArgs e)
{
MTCSYT.SYS_Session session = (MTCSYT.SYS_Session)Session["SYS_Session"];
string strMadviqly = session.User.ma_dviqlyDN;
var cv = (DataRowView)grdKH.GetRow(grdKH.FocusedRowIndex);
string ma_tram = cv["MA_TRAM"] + "";
string ma_khang = cv["MA_KHANG"] + "";
db.DELETE_TTTT_KHACHHANG_LUUY(strMadviqly, ma_khang);
LoadKH();
grdKH.Selection.UnselectAll();
}