MenuItemCollection.Count Property
Definition
Important
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Gets the number of menu items contained in the current MenuItemCollection object.
public:
property int Count { int get(); };public int Count { get; }member this.Count : intPublic ReadOnly Property Count As IntegerProperty Value
The number of menu items contained in the current MenuItemCollection object.
Implements
Examples
The following code example demonstrates how to use the Count property to determine the number of menu items in 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 NavigationMenu_MenuItemClick(Object sender, MenuEventArgs e)
{
// Use the Count property to determine the number of submenu
// items contained in the selected menu item.
Message.Text = "The " + e.Item.Text + " menu item contains " +
e.Item.ChildItems.Count.ToString() + " submenu items.";
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>MenuItemCollection Count Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>MenuItemCollection Count Example</h3>
Select an item from the menu.
<br/><br/>
<asp:menu id="NavigationMenu"
orientation="Vertical"
target="_blank"
onmenuitemclick="NavigationMenu_MenuItemClick"
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>
<hr/>
<asp:label id="Message"
runat="server"/>
</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 NavigationMenu_MenuItemClick(ByVal sender As Object, ByVal e As MenuEventArgs)
' Use the Count property to determine the number of submenu
' items contained in the selected menu item.
Message.Text = "The " & e.Item.Text & " menu item contains " & _
e.Item.ChildItems.Count.ToString & " submenu items."
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>MenuItemCollection Count Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>MenuItemCollection Count Example</h3>
Select an item from the menu.
<br/><br/>
<asp:menu id="NavigationMenu"
orientation="Vertical"
target="_blank"
onmenuitemclick="NavigationMenu_MenuItemClick"
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>
<hr/>
<asp:label id="Message"
runat="server"/>
</form>
</body>
</html>
Remarks
Use the Count property to determine the number of items in a MenuItemCollection object. This property is commonly used when iterating through a collection to determine the upper bound of the collection. The Count property is also commonly used to determine whether a collection is empty.
