語言

Menu.MenuItemDataBound 活動

定義

命名空間:
System.Web.UI.WebControls
組件:
System.Web.dll

當控制項中的選單項目 Menu 綁定到資料時會發生。

public:
 event System::Web::UI::WebControls::MenuEventHandler ^ MenuItemDataBound;
public event System.Web.UI.WebControls.MenuEventHandler MenuItemDataBound;
member this.MenuItemDataBound : System.Web.UI.WebControls.MenuEventHandler 
Public Custom Event MenuItemDataBound As MenuEventHandler

事件類型

MenuEventHandler

範例

以下程式碼範例示範如何為事件建立一個事件處理程序，該處理MenuItemDataBound程序會在選單項目顯示於Home控制項中前修改文字Menu。


<%@ 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_MenuItemDataBound(Object sender, MenuEventArgs e)
  {
    // Modify the text of the Home menu item by 
    // adding parenthesis around the text. 
    if (e.Item.Text == "Home")
    {
      e.Item.Text = "(" + e.Item.Text + ")";
    }
  }
  
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>Menu MenuItemDataBound Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>Menu MenuItemDataBound Example</h3>
    
      <asp:menu id="NavigationMenu"
        staticdisplaylevels="2"
        staticsubmenuindent="10" 
        orientation="Vertical"
        target="_blank"
        datasourceid="MenuSource"
        onmenuitemdatabound="NavigationMenu_MenuItemDataBound"    
        runat="server">

      </asp:menu>
      
      <asp:SiteMapDataSource id="MenuSource"
        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_MenuItemDataBound(ByVal sender As Object, ByVal e As MenuEventArgs)
  
    ' Modify the text of the Home menu item by 
    ' adding parenthesis around the text. 
    If e.Item.Text = "Home" Then
    
      e.Item.Text = "(" & e.Item.Text & ")"
    
    End If
      
  End Sub
  
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>Menu MenuItemDataBound Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>Menu MenuItemDataBound Example</h3>
    
      <asp:menu id="NavigationMenu"
        staticdisplaylevels="2"
        staticsubmenuindent="10" 
        orientation="Vertical"
        target="_blank"
        datasourceid="MenuSource"
        onmenuitemdatabound="NavigationMenu_MenuItemDataBound"    
        runat="server">

      </asp:menu>
      
      <asp:SiteMapDataSource id="MenuSource"
        runat="server"/>        

    </form>
  </body>
</html>

備註

當選單項目綁定到控制項中的MenuItemDataBound資料時，事件Menu就會被觸發。 這讓你能提供一個事件處理程序，執行自訂例程，例如在渲染前新增自訂內容或修改選單項目，當事件發生時。

一個 MenuEventArgs 物件會傳給事件處理器，讓你能存取引發事件的選單項目屬性。

欲了解更多如何處理事件的資訊，請參閱 「處理與提升事件」。

適用於

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