MenuItemBindingCollection.RemoveAt Method (Int32)

 

Removes the MenuItemBinding object at the specified index location from the collection.

Namespace:   System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

public void RemoveAt(
	int index
)

Parameters

index
Type: System.Int32

The zero-based index location of the menu item binding to remove.

Use the RemoveAt method to remove the MenuItemBinding object at the specified index location from the collection. All items that follow that menu item are then moved up to fill in the vacant position. The indexes of the moved items are also updated.

System_CAPS_noteNote

The collection can contain null values, as well as duplicate MenuItemBinding objects.

As an alternative, you can remove a specific MenuItemBinding object by using the Remove method. You can also remove all menu items from the collection by using the Clear method.

The following code example demonstrates how to use the RemoveAt method to remove a MenuItemBinding object from the collection at a specific index. 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 RemoveAt method to remove the  
      // MenuItemBinding object at index 3 from
      // the Bindings collection.
      NavigationMenu.DataBindings.RemoveAt(3);
    }
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>MenuItemBindingCollection RemoveAt Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <h3>MenuItemBindingCollection RemoveAt 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"/>
          <asp:menuitembinding datamember="ExtraMapNode" 
            depth="3"
            textfield="title" 
            navigateurlfield="url"/>
        </databindings>

      </asp:menu>

      <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>

.NET Framework
Available since 2.0
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