MenuItemBindingCollection.IndexOf Method (MenuItemBinding)
Determines the index of the specified MenuItemBinding object in the collection.
Assembly: System.Web (in System.Web.dll)
Parameters
- value
-
Type:
System.Web.UI.WebControls.MenuItemBinding
The MenuItemBinding to determine the index of.
Return Value
Type: System.Int32The zero-based index of the first occurrence of value within the collection, if found; otherwise, -1.
Use the IndexOf method to determine the index of the specified MenuItemBinding object in the collection.
Note |
|---|
The order in which MenuItemBinding objects appear in the collection has no effect on how those objects are applied to the menu items in a Menu control. |
If the menu item binding is not in the collection, the method returns -1.
Note |
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If the specified menu item binding appears multiple times in the collection, the index of the first occurrence is returned. |
The following code example demonstrates how to use the IndexOf method to determine the index of a MenuItemBinding object in the collection. For this example to work correctly, you must copy the sample XML data below to a file named Map.xml.
<%@ Page Language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server"> void Page_Load(Object sender, EventArgs e) { if(!IsPostBack) { // Use the indexer to retrieve the MenuItemBinding // object at index 2. MenuItemBinding binding = NavigationMenu.DataBindings[2]; int index = NavigationMenu.DataBindings.IndexOf(binding); Message.Text = "The MenuItemBinding object that is applied " + "to the menu items at depth 2 is contained in the Bindings " + "collection at index " + index.ToString() + "."; } } </script> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>MenuItemBindingCollection IndexOf Example</title> </head> <body> <form id="form1" runat="server"> <h3>MenuItemBindingCollection IndexOf Example</h3> <asp:menu id="NavigationMenu" staticdisplaylevels="2" staticsubmenuindent="10" orientation="Vertical" target="_blank" datasourceid="MenuSource" runat="server"> <DataBindings> <asp:menuitembinding datamember="MapHomeNode" depth="0" textfield="title" navigateurlfield="url"/> <asp:menuitembinding datamember="MapNode" depth="1" textfield="title" navigateurlfield="url"/> <asp:menuitembinding datamember="MapNode" depth="2" textfield="title" navigateurlfield="url"/> </DataBindings> </asp:menu> <hr/> <asp:label id="Message" runat="server"/> <asp:xmldatasource id="MenuSource" datafile="Map.xml" runat="server"/> </form> </body> </html>
The following is sample site map data for the previous example.
<MapHomeNode url="~\Home.aspx"
title="Home"
description="Home">
<MapNode url="~\Music.aspx"
title="Music"
description="Music">
<MapNode url="~\Classical.aspx"
title="Classical"
description="Classical"/>
<MapNode url="~\Rock.aspx"
title="Rock"
description="Rock"/>
<MapNode url="~\Jazz.aspx"
title="Jazz"
description="Jazz"/>
</MapNode>
<MapNode url="~\Movies.aspx"
title="Movies"
description="Movies">
<MapNode url="~\Action.aspx"
title="Action"
description="Action"/>
<MapNode url="~\Drama.aspx"
title="Drama"
description="Drama"/>
<MapNode url="~\Musical.aspx"
title="Musical"
description="Musical"/>
</MapNode>
</MapHomeNode>
Available since 2.0
