Related RadMenu

[Joseph]

Hi,

There is a RadMenu on top of my page. Based on the selected menu, I want to populate another RadMenu. Please help.

Thanks in advance
Joseph.

[Princy]

Hi Joseph,

Please have a look at the following sample code which works fine at my end.

ASPX:

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
    <AjaxSettings>
        <telerik:AjaxSetting AjaxControlID="RadMenu1">
            <UpdatedControls>
                <telerik:AjaxUpdatedControl ControlID="CategoryPanel" LoadingPanelID="RadAjaxLoadingPanel1" />
            </UpdatedControls>
        </telerik:AjaxSetting>
    </AjaxSettings>
</telerik:RadAjaxManager>
<telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1">
</telerik:RadAjaxLoadingPanel>
<telerik:RadMenu ID="RadMenu1" runat="server" OnItemClick="RadMenu1_ItemClick" Skin="Office2010Silver">
    <Items>
        <telerik:RadMenuItem Text="Laptop" />
        <telerik:RadMenuItem Text="PenDrive" />
        <telerik:RadMenuItem Text="Mobile" />
    </Items>
</telerik:RadMenu>
<br />
<asp:Panel runat="server" ID="CategoryPanel">
    <h4>
    <br />
        <asp:Label runat="server" ID="CurrentCategory" /></h4>
    <telerik:RadMenu ID="RadMenu2" runat="server" Flow="Vertical" Visible="false" Skin="Office2010Silver">
    </telerik:RadMenu>
</asp:Panel>

C#:

protected void Page_Load(object sender, EventArgs e)
{
    if (!Page.IsPostBack)
    {
        FilterMenu(RadMenu1.FindItemByText("Laptop"));
    }
}

protected void FilterMenu(RadMenuItem rootItem)
{
    RadMenu2.Items.Clear();

    switch (rootItem.Text)
    {
        case "Laptop":
            RadMenu2.Items.Add(new RadMenuItem("Dell"));
            RadMenu2.Items.Add(new RadMenuItem("HP"));
            RadMenu2.Items.Add(new RadMenuItem("Lenovo"));
            RadMenu2.Items.Add(new RadMenuItem("Acer"));
            break;
        case "PenDrive":
            RadMenu2.Items.Add(new RadMenuItem("Transcend"));
            RadMenu2.Items.Add(new RadMenuItem("SanDisk"));
            RadMenu2.Items.Add(new RadMenuItem("Kingston"));
            RadMenu2.Items.Add(new RadMenuItem("HP"));
            break;
        case "Mobile":
            RadMenu2.Items.Add(new RadMenuItem("Samsung"));
            RadMenu2.Items.Add(new RadMenuItem("Nokia"));
            RadMenu2.Items.Add(new RadMenuItem("Sony"));
            RadMenu2.Items.Add(new RadMenuItem("HTC"));
            break;
    }
    RadMenu2.Items[0].Width = Unit.Pixel(168);
    RadMenu2.Visible = true;
    CurrentCategory.Text = rootItem.Text;
    rootItem.Selected = true;
}

protected void RadMenu1_ItemClick(object sender, RadMenuEventArgs e)
{
    FilterMenu(e.Item);
}

Thanks,
Princy.