MenuItemBindingCollection.Item[Int32] 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。
取得集合中位於指定索引處的 MenuItemBinding 物件。
public:
property System::Web::UI::WebControls::MenuItemBinding ^ default[int] { System::Web::UI::WebControls::MenuItemBinding ^ get(int i); void set(int i, System::Web::UI::WebControls::MenuItemBinding ^ value); };public System.Web.UI.WebControls.MenuItemBinding this[int i] { get; set; }member this.Item(int) : System.Web.UI.WebControls.MenuItemBinding with get, setDefault Public Property Item(i As Integer) As MenuItemBinding參數
- i
- Int32
要擷取的 MenuItemBinding 之以零起始索引。
屬性值
位在集合中指定索引處的 MenuItemBinding。
範例
下列程式碼範例示範如何使用索引子從集合擷取 MenuItemBinding 物件。 然後，物件的屬性 MenuItemBinding 會以程式設計方式更新。 若要讓此範例正常運作，您必須將下面的範例 XML 資料複製到名為 Map.xml 的檔案。
<%@ 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 0.
MenuItemBinding binding = NavigationMenu.DataBindings[0];
// Instead of binding the Text property of the Home
// menu item to a field from a data source, bind it
// to static text.
binding.TextField = "";
binding.Text = "Custom Menu Text";
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>MenuItemBindingCollection Indexer Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>MenuItemBindingCollection Indexer 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>
<asp:xmldatasource id="MenuSource"
datafile="Map.xml"
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 Page_Load(ByVal sender As Object, ByVal e As EventArgs)
If Not IsPostBack Then
' Use the indexer to retrieve the MenuItemBinding
' object at index 0.
Dim binding As MenuItemBinding = NavigationMenu.DataBindings(0)
' Instead of binding the Text property of the Home
' menu item to a field from a data source, bind it
' to static text.
binding.TextField = ""
binding.Text = "Custom Menu Text"
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>MenuItemBindingCollection Indexer Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>MenuItemBindingCollection Indexer 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>
<asp:xmldatasource id="MenuSource"
datafile="Map.xml"
runat="server"/>
</form>
</body>
</html>
以下是上一個範例的網站地圖資料範例。
<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>
備註
使用此索引子，使用 MenuItemBinding 陣列標記法從集合存取集合中的 物件。 索引子可讓您直接存取、修改或取代 MenuItemBinding 集合中的 物件。