To give more beautiful for intranet systems / sites, we may need icons/images to be displayed along with the menu caption.
To map image with a site map node, add a custom property, say, "menuImage" in the sitemapnode tag as below
<siteMapNode url="~/pages/wemployee.aspx" title=":: Employees" description="" menuImage="~/Images/viewdetail.gif" />
Now, in the code behind, add the code below:-
protected void Menu1_MenuItemDataBound(object sender, MenuEventArgs e)
e.Item.ImageUrl = ((SiteMapNode)e.Item.DataItem)["menuImage"];
Infact, you can have a harcoded image path as well.