protected void Page_Load(object sender, EventArgs e)
        {
            if (Page.IsPostBack)
            {
                return;
            }

            int            navigationType = RequestHelper.GetQueryString <int>("navigationType");
            int            id             = RequestHelper.GetQueryString <int>("Id");
            NavigationInfo navigation     = new NavigationInfo();

            if (id > 0)
            {
                navigation     = NavigationBLL.Read(id);
                navigationType = navigation.NavigationType;
            }

            //导航类别
            ddlNavigationType.DataSource     = EnumHelper.ReadEnumList <NavigationType>();
            ddlNavigationType.DataTextField  = "ChineseName";
            ddlNavigationType.DataValueField = "Value";
            ddlNavigationType.DataBind();
            ddlNavigationType.Text = navigationType.ToString();

            //父类导航
            int curNavigation = int.Parse(ddlNavigationType.Text);

            ddlParent.DataSource     = NavigationBLL.ReadFatherList(curNavigation);
            ddlParent.DataTextField  = "Name";
            ddlParent.DataValueField = "Id";
            ddlParent.DataBind();
            ddlParent.Items.Insert(0, new ListItem("父级导航", "0"));

            //内容ID
            ClassId.DataSource     = ClassRelation.Read();
            ClassId.DataTextField  = "Name";
            ClassId.DataValueField = "VirtualId";
            ClassId.DataBind();
            ClassId.Items.Insert(0, new ListItem("--请选择--", "0"));

            //显示方式
            radioNavigationShowType.DataSource     = EnumHelper.ReadEnumList <NavigationShowType>();
            radioNavigationShowType.DataTextField  = "ChineseName";
            radioNavigationShowType.DataValueField = "Value";
            radioNavigationShowType.DataBind();

            LinkTypeForCustom.Visible = false;
            IsVisible.Text            = "1";

            if (id > 0)
            {
                ddlParent.Text = navigation.ParentId.ToString();
                radioNavigationShowType.Text = navigation.ClassType.ToString();
                LinkType.Text                = navigation.ClassType.ToString();
                LinkTypeForURL.Visible       = navigation.ClassType == (int)NavigationClassType.Url;
                LinkTypeForCustom.Visible    = navigation.ClassType != (int)NavigationClassType.Url;
                ShowTypeForCustom.Visible    = !navigation.IsSingle;
                radioIsSingle.Text           = navigation.IsSingle.ToString().ToLower();
                radioNavigationShowType.Text = navigation.ShowType.ToString();

                Name.Text      = navigation.Name;
                Remark.Text    = navigation.Remark;
                OrderId.Text   = navigation.OrderId.ToString();
                URL.Text       = navigation.Url;
                ClassId.Text   = navigation.ClassId.ToString();
                IsVisible.Text = navigation.IsVisible.ToString().ToLower();
            }
        }