MenuItem.Parent 屬性
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
取得目前功能表項目的父功能表項目。
public:
property System::Web::UI::WebControls::MenuItem ^ Parent { System::Web::UI::WebControls::MenuItem ^ get(); };[System.ComponentModel.Browsable(false)]
public System.Web.UI.WebControls.MenuItem Parent { get; }[<System.ComponentModel.Browsable(false)>]
member this.Parent : System.Web.UI.WebControls.MenuItemPublic ReadOnly Property Parent As MenuItem屬性值
MenuItem，表示目前功能表項目的父功能表項目。
- 屬性
範例
下列範例示範如何使用 Parent 屬性來存取子功能表項的父功能表項目。
<%@ 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 MenuItemClick_NavigationMenu(Object sender, MenuEventArgs e)
{
// Use the Parent property to access the
// parent menu item of the menu item clicked
// by the user.
MenuItem parentItem = e.Item.Parent;
// Display the parent menu item.
if (parentItem != null)
{
Message.Text = "You are in the " + parentItem.Text +
" category.";
}
else
{
Message.Text = "The selected menu item is a root menu item.";
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>MenuItem Parent Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>MenuItem Parent Example</h3>
<asp:menu id="NavigationMenu"
staticdisplaylevels="2"
staticsubmenuindent="10"
orientation="Vertical"
onmenuitemclick="MenuItemClick_NavigationMenu"
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 MenuItemClick_NavigationMenu(ByVal sender As Object, ByVal e As MenuEventArgs)
' Use the Parent property to access the
' parent menu item of the menu item clicked
' by the user.
Dim parentItem As MenuItem = e.Item.Parent
' Display the parent menu item.
If parentItem IsNot Nothing Then
Message.Text = "You are in the " & parentItem.Text & _
" category."
Else
Message.Text = "The selected menu item is a root menu item."
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>MenuItem Parent Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>MenuItem Parent Example</h3>
<asp:menu id="NavigationMenu"
staticdisplaylevels="2"
staticsubmenuindent="10"
orientation="Vertical"
onmenuitemclick="MenuItemClick_NavigationMenu"
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>
備註
Parent使用 屬性來判斷父功能表項目或存取其屬性。
注意
根功能表項目沒有父功能表項目。
若要存取目前功能表項目的子功能表專案，請使用 ChildItems 屬性。