ASP.Net Master Page Sidebar display after Login (keeping it displayed whilst logged in)

I have the following sidebar on my master page. It is not a part of any ContentPlaceHolder.

<div runat="serv开发者_如何学运维er" visible="false" id="menuAccountMembersDiv" class="leftCol">
    <asp:Menu ID="menuAccountMembers" runat="server" StaticSubMenuIndent="16px" Visible="false">
    <Items>
        <asp:MenuItem ImageUrl="~/Resources/x.png" 
        NavigateUrl="~/About.aspx" Text="x" ToolTip="x" 
        Value="b647ce4e-5c7f-400c-a921-ec7902494f26"></asp:MenuItem>
        <asp:MenuItem ImageUrl="~/Resources/y.png" 
        NavigateUrl="~/About.aspx" Text="y" ToolTip="y" 
        Value="y"></asp:MenuItem>
        <asp:MenuItem ImageUrl="~/Resources/sarahhunkin.png" NavigateUrl="~/About.aspx" 
        PopOutImageUrl="~/Resources/z.png" Text="z" 
        ToolTip="z" Value="z"></asp:MenuItem>
        <asp:MenuItem ImageUrl="~/Resources/a.png" 
        NavigateUrl="~/About.aspx" 
        PopOutImageUrl="~/Resources/apop.png" Text="a" 
        ToolTip="a" Value="a"></asp:MenuItem>
    </Items>
    </asp:Menu>
</div>

I initially hide it. But I would like to display it and keep it displayed after logging in. Using the standard web application login page. I tried the following:

protected void LoginUser_LoggedIn(object sender, EventArgs e)
{
    Menu MenuAccountMembers = (Menu)Master.FindControl("menuAccountMembers");

    MenuAccountMembers.Visible = true;

    Control menuAccountMembersDiv = (Control)Master.FindControl("menuAccountMembersDiv");

    menuAccountMembersDiv.Visible = true;
}

I am not sure to to interact with the div tag, as there is no Div object. In any event, this does not display the sidebar with the menu

EDIT: I ended up adding the following code to the master page itself.

public partial class SiteMaster : System.Web.UI.MasterPage
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (HttpContext.Current.Request.IsAuthenticated)
        {
            Control MenuDiv = this.FindControl("menuAccountMembersDiv");
            MenuDiv.Visible = true;

            Menu AccountMenu = (Menu)MenuDiv.FindControl("menuAccountMembers");
            AccountMenu.Visible = true;
        }
    }
}

I would go for setting the visibiliy directly on your div based on authentication status

<div runat="server" visible="<%# Page.User.IsAuthenticated %>" id="menuAccountMembersDiv" class="leftCol">

that way you don't need your LoginUser_LoggedIn method and the menu will show/hide on every load depending on the user is logged in or not

And remember to remove the Visible="false" from your <asp:Menu> control, if the outer div is hidden, nothing inside it will be shown anyway.

Since you have the runat="server" tag in the menu's Div tag, you can reference it directly in code...

menuAccountMembersDiv.Style.Item("Display") = "none";

or

menuAccountMembersDiv.Visible = False;

A div tag is a HtmlGenericControl class. To get access to this class import namespace System.Web.UI.HtmlControls; and use something like this:

HtmlGenericControl div = Master.FindControl("menuAccountMembersDiv") as HtmlGenericControl;
if(div != null)
{
    div.Visible = true;
}

Or you can move your menu to UserControl and hide or show just use ID of your UserControl.

Hope it will help you with your question.