MenuEventArgs.Item 属性

  • 参考

定义

命名空间:
System.Web.UI.WebControls
程序集:
System.Web.dll

获取与引发的事件关联的菜单项。

public:
 property System::Web::UI::WebControls::MenuItem ^ Item { System::Web::UI::WebControls::MenuItem ^ get(); };
public System.Web.UI.WebControls.MenuItem Item { get; }
member this.Item : System.Web.UI.WebControls.MenuItem
Public ReadOnly Property Item As MenuItem

属性值

MenuItem

MenuItem，表示与引发的事件关联的菜单项。

示例

下面的代码示例演示如何使用 Item 属性访问用户单击的菜单项的属性。 所选菜单项的文本将显示在页面上。


<%@ 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)
  {
    // Display the text of the menu item selected by the user.
    Message.Text = "You selected " + e.Item.Text + ".";
  }
    
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>MenuEventArgs Item Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>MenuEventArgs Item 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)

    ' Display the text of the menu item selected by the user.
    Message.Text = "You selected " & e.Item.Text & "."
    
  End Sub
    
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>MenuEventArgs Item Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>MenuEventArgs Item 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>

注解

Item使用 属性访问或修改与引发的事件关联的菜单项的属性。 MenuItemClick对于 事件，此项表示用户单击的菜单项。 MenuItemDataBound对于 事件，此项表示绑定到数据的菜单项。

适用于

另请参阅