ASP.NET Easy Menu - Menu item postback

To call a server event after you click on menu item you need to use,
as you can see inside the suite example, an invisible button:
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" style="display:none" />

Also a helpful control is a hidden input for storing the id of the clicked menu item:
<input type="hidden" id="Hidden1" runat="server" />

The server event that is called is the event that is triggered when the button is clicked
(currently not allowed because is not visible):
protected void Button1_Click(object sender, EventArgs e)
    ...some code...

The last important thing is the client event triggered by the menu item.
The event is set using menu item server property "OnClientClick":
<oem:MenuItem InnerHtml="<b>Server event 1</b>" ID="menuItem2" OnClientClick="CallServerEvent('menuItem2')"></oem:MenuItem>

Client-side event

function CallServerEvent(argument)
    // store the clicked item id
    document.getElementById('<%=Hidden1.ClientID %>').value = argument;
    // call the server side event (same as button click)
    <%= Page.ClientScript.GetPostBackEventReference(this.Button1, "") %>

Mouse over the gray box to see the menu.
Clicking on the second and third item in the menu will cause a postback to server.


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