MenuItemCollection.Remove(MenuItem) Method
Definition
Important
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Removes the specified MenuItem object from the MenuItemCollection object.
public:
void Remove(System::Web::UI::WebControls::MenuItem ^ value);public void Remove (System.Web.UI.WebControls.MenuItem value);member this.Remove : System.Web.UI.WebControls.MenuItem -> unitPublic Sub Remove (value As MenuItem)Parameters
Exceptions
value is null.
Examples
The following code example demonstrates how to use the Remove method to programmatically remove a MenuItem object from a MenuItemCollection object.
<%@ 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)
{
// Retrieve the root menu item from the Items
// collection of the Menu control.
MenuItem homeMenuItem = NavigationMenu.Items[0];
// Retrieve the Movie submenu item from the ChildItems
// collection of the root menu item.
MenuItem movieSubMenuItem = NavigationMenu.FindItem(@"Home\Movies");
// Remove the Movie submenu item.
if (movieSubMenuItem != null)
{
homeMenuItem.ChildItems.Remove(movieSubMenuItem);
}
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>MenuItemCollection Remove Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>MenuItemCollection Remove Example</h3>
<asp:menu id="NavigationMenu"
orientation="Vertical"
target="_blank"
runat="server">
<items>
<asp:menuitem text="Home"
tooltip="Home">
<asp:menuitem text="Music"
tooltip="Music">
<asp:menuitem text="Classical"
tooltip="Classical"/>
<asp:menuitem text="Rock"
tooltip="Rock"/>
<asp:menuitem text="Jazz"
tooltip="Jazz"/>
</asp:menuitem>
<asp:menuitem text="Movies"
tooltip="Movies">
<asp:menuitem text="Action"
tooltip="Action"/>
<asp:menuitem text="Drama"
tooltip="Drama"/>
<asp:menuitem text="Musical"
tooltip="Musical"/>
</asp:menuitem>
</asp:menuitem>
</items>
</asp:menu>
</form>
</body>
</html>
<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
If Not IsPostBack Then
' Retrieve the root menu item from the Items
' collection of the Menu control.
Dim homeMenuItem As MenuItem = NavigationMenu.Items(0)
' Retrieve the Movie submenu item from the ChildItems
' collection of the root menu item.
Dim movieSubMenuItem As MenuItem = NavigationMenu.FindItem("Home\Movies")
' Remove the Movie submenu item.
If movieSubMenuItem IsNot Nothing Then
homeMenuItem.ChildItems.Remove(movieSubMenuItem)
End If
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>MenuItemCollection Remove Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>MenuItemCollection Remove Example</h3>
<asp:menu id="NavigationMenu"
orientation="Vertical"
target="_blank"
runat="server">
<items>
<asp:menuitem text="Home"
tooltip="Home">
<asp:menuitem text="Music"
tooltip="Music">
<asp:menuitem text="Classical"
tooltip="Classical"/>
<asp:menuitem text="Rock"
tooltip="Rock"/>
<asp:menuitem text="Jazz"
tooltip="Jazz"/>
</asp:menuitem>
<asp:menuitem text="Movies"
tooltip="Movies">
<asp:menuitem text="Action"
tooltip="Action"/>
<asp:menuitem text="Drama"
tooltip="Drama"/>
<asp:menuitem text="Musical"
tooltip="Musical"/>
</asp:menuitem>
</asp:menuitem>
</items>
</asp:menu>
</form>
</body>
</html>
Remarks
Use the Remove method to remove the specified menu item 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.
Note
The MenuItemCollection object can contain null values, as well as duplicate MenuItem objects.
As an alternative, you can remove a menu item from a specific index in the collection by using the RemoveAt method. You can also remove all menu items from the collection by using the Clear method.
