protected void gvKh_SelectedIndexChanging(object sender, GridViewSelectEventArgs e)
{
var row = gvKh.Rows[e.NewSelectedIndex];
var index = GridViewHelper.GetColumnIndexByName(row, "MaKh");
var maKh = int.Parse(row.Cells[index].Text);
Load_gvSims(maKh);
}
protected void gvHoaDon_SelectedIndexChanging(object sender, GridViewSelectEventArgs e)
{
var row = gvHoaDon.Rows[e.NewSelectedIndex];
var index = GridViewHelper.GetColumnIndexByName(row, "MaHd");
var maHd = int.Parse(row.Cells[index].Text);
gvHoaDonChiTiet_GetData(maHd);
}