protected void btnEdit_Click(object sender, EventArgs e)
        {
            btnSave.Text = "Cập nhật";
            GridViewRow row     = (GridViewRow)((LinkButton)sender).Parent.Parent;
            var         ID_find = Convert.ToInt32(row.Cells[0].Text);
            Cls_AboutUs cls     = Cls_AboutUs.getOject_Key(ID_find);

            txtID_AboutUs.Text     = ID_find.ToString();
            txtTitle.Text          = cls.Title.ToString();
            txtSummaryContent.Text = cls.SummaryContent.ToString();
            txtImage.Text          = cls.Image.ToString();
            txtDetail.Text         = cls.Description.ToString();
            txtLinkSEO.Text        = cls.LinkSEO.ToString();
            Console.WriteLine(cls.Hidden.ToString());
            if (cls.Hidden == true)
            {
                cbHidden.Checked = true;
            }
            else
            {
                cbHidden.Checked = false;
            }

            popup.Show();
        }