private void txtSerchDG_TextChanged(object sender, EventArgs e)
{
if (rabMaDG.Checked == true)
{
DocGiaDAO dg = new DocGiaDAO();
docgiaList.DataSource = dg.GetListDGByMaDG(txtSerchDG.Text);
}
if (rabMaSV.Checked == true)
{
DocGiaDAO dg = new DocGiaDAO();
docgiaList.DataSource = dg.GetListDGByMaSV(txtSerchDG.Text);
}
}