protected void ShowListInContent()
{
int PortalId = Convert.ToInt32(ddlPortalList.SelectedValue);
int ContentItemId = Convert.ToInt32(ddlContentItem.SelectedValue);
List <aspnet_Tab> lst = TabController.GetListByPortalId_ContentItemId_IsSecure(PortalId, ContentItemId, true);
ddlListInContent.Items.Clear();
ddlListInContent.DataSource = lst;
ddlListInContent.DataTextField = "TabName";
ddlListInContent.DataValueField = "TabId";
ddlListInContent.DataBind();
ddlListInContent.Items.Insert(0, new ListItem("- Chọn -", "0"));
ddlListInContent.SelectedIndex = 0;
}