private void Edit_ExtLink(string PageIndexID)
        {
            Page_PropertyMgr myPropertyMgr = new Page_PropertyMgr();

            if (!tbx_LinkURL.Text.Trim().StartsWith("http://"))
            {
                tbx_LinkURL.Text = "http://" + tbx_LinkURL.Text.Trim();
            }

            // Page Index
            e2Data[] UpdateData =
            {
                new e2Data("PageIndexID", PageIndexID),
                new e2Data("Page_URL",    tbx_LinkURL.Text),
                new e2Data("Page_Target", RadComboBox_LinkTarget.Text)
            };

            if (myPropertyMgr.Chk_Page_ExtLink(PageIndexID))
            {
                myPropertyMgr.Edit_Page_ExtLink(UpdateData);
            }
            else
            {
                myPropertyMgr.Add_Page_ExtLink(UpdateData);
            }
        }