public void HienthiBnDataGridview(DevComponents.DotNetBar.Controls.DataGridViewX dg, string str)
{
System.Windows.Forms.BindingSource bs = new System.Windows.Forms.BindingSource();
DataTable tbl = data.DanhsachNguoiDung(str);
bs.DataSource = tbl;
//bn.BindingSource = bs;
dg.DataSource = bs;
}