Disable javascript generation by ASP.NET menu control

Question

In my website I'm using the standard ASP.NET menu control. I already got so far as to write a custom control adapter to get rid of the rather tacky html output that is generated by the default control adapter.

One thing keeps buggering me though. Somehow ASP.NET is generating extra javascript that I don't want nor need for my menu controls, since I won't be using any of the dynamic features in the control. I replaced the control adapter, so it doesn't generate compatible HTML for that.

Anyone got an idea how I can prevent ASP.NET from generating the extra javascript for the menu control?

Tim Santeford · Accepted Answer · 2010-09-30 23:32:10Z

4

This problem cropped up for me after upgraded to ASP.net 4.0 with the installation of vs 2010. The fix is to either force the menu to render as a table or to turn off the new CSS/javascript "features" that 4.0 adds. Settings the menu's RenderingMode attribute to "Table" fixed this problem for me even though I use a Menu Adapter to render the control with lists.

<asp:Menu ID="mnuStuff" runat="server" RenderingMode="Table">
    ...
</asp:Menu>

You can do this site wide setting controlRenderingCompatibilityVersion to 3.5 in the web.config:

<system.web> 
  <pages controlRenderingCompatibilityVersion="3.5"/> 
</system.web>

This will eliminate the rendering of inline javascript that asp injects in the base of the page.

edited Sep 30, 2010 at 23:32

answered Sep 30, 2010 at 22:46

Tim Santeford

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Comments

ajcs · Accepted Answer · 2011-10-20 15:02:34Z

2

If you prefer to stick with ASP.Net 4.0 control rendering you can create a custom menu (derived from System.Web.UI.WebControls.Menu) and replace the OnPreRender:

public class MyCustomMenu : Menu
{
    protected override void OnPreRender(EventArgs e)
    {
        // Don't call base OnPreRender
        //base.OnPreRender(e);
    }
}

That did the trick.

answered Oct 20, 2011 at 15:02

ajcs

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1 Comment

saturdayplace Over a year ago

The following answer to a similar question helped me implement this solution: stackoverflow.com/questions/232934/…

to StackOverflow · Accepted Answer · 2012-01-12 21:14:39Z

An alternative way to get rid of the menu startup script is to call RegisterStartup script method before the Menu PreRender event, using the same script key, and outputting dummy (or empty) script.

This relies on internal implementation details of the Menu Type discovered using Reflector, so is somewhat fragile.

For example, a static class that looks something like:

static MenuHelper
{
    private static Type _rendererType = 
          typeof(Menu).Assembly.GetType(
              typeof(Menu).FullName + "+MenuRendererStandards"
              );

    public static void RemoveMenuScript(Menu menu)
    {
        string dummyScript = "<!-- Removed Menu Startup script -->";
        string key = "_registerMenu_" + menu.ClientID;
        ScriptManager.RegisterStartupScript(menu, _rendererType, key, dummyScript, false);
    }
}

You then just need to make sure you call MenuHelper.RemoveMenuScript(menu) before the menu's PreRender event.

The OP is using an Adapter so Tim Santeford's answer is better in his situation. But if you want to render a static menu as a list without the startup code, and without the effort of writing an adapter, this might be an alternative.

Shahul Hameed · Accepted Answer · 2013-05-16 12:11:43Z

1

<script type="text/javascript">
    Sys.WebForms.Menu = "";
</script>

it works..

use it in aspx page

answered May 16, 2013 at 12:11

Shahul Hameed

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1 Comment

Moo Over a year ago

Great suggestion but it causes some JavaScript errors - redefining the function, i.e. 'Sys.WebForms.Menu = function() {};' does the same trick but doesn't cause these errors. See: stackoverflow.com/a/3264250/1020271

Benedict · Accepted Answer · 2010-09-10 01:47:17Z

0

I just plan to ask about a similar question after 2 hours of search and have no luck.

What I want is to use the jquery superfish plugin as I want its animation for smooth looking. And with the ASP.NET generated javascript, the superfish just won't work.

And finally I try to set the ASP.NET Menu's control's attribute Enabled = false

and the outcoming source becomes this:

new Sys.WebForms.Menu({ element: 'mysitemeun', disappearAfter: 500, orientation: 'horizontal', tabIndex: 0, disabled: **true** });

After tracing the code, setting it disabled still have some style changes in the Menu but it will not add event to the MenuItem. And the superfish's animation works now.

if (!this.container.disabled) {
    Sys.WebForms.Menu._domHelper.addEvent(this.element, 'mouseover', Sys.WebForms.MenuItem._onmouseover);
    Sys.WebForms.Menu._domHelper.addEvent(this.element, 'mouseout', Sys.WebForms.MenuItem._onmouseout);
}

edited Sep 10, 2010 at 1:47

answered Sep 9, 2010 at 3:28

Benedict

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2 Comments

Willem Meints Over a year ago

I'm sorry, but this still involves javascript. I want to remove the javascript completely.

Benedict Over a year ago

I'm sorry, I can't find a way as well, but just to tell you that after the above setting, I can at least control it using jquery and superfish.

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