Menu.MenuItemClick Menu.MenuItemClick Menu.MenuItemClick Menu.MenuItemClick Event

Definizione

Si verifica quando viene selezionata una voce di menu in un controllo Menu.Occurs when a menu item in a Menu control is clicked.

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

Esempi

Nell'esempio di codice riportato di seguito viene illustrato come creare un gestore MenuItemClick eventi per l'evento che Visualizza il testo della voce di menu selezionata dall'utente.The following code example demonstrates how to create an event handler for the MenuItemClick event that displays the text of the menu item selected by the user.


<%@ 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)
  {
    // 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>Menu MenuItemClick Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>Menu MenuItemClick Example</h3>

      <asp:menu id="NavigationMenu"
        staticdisplaylevels="2"
        staticsubmenuindent="10" 
        orientation="Vertical"
        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)
  
    ' 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>Menu MenuItemClick Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>Menu MenuItemClick Example</h3>

      <asp:menu id="NavigationMenu"
        staticdisplaylevels="2"
        staticsubmenuindent="10" 
        orientation="Vertical"
        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>

Commenti

L' MenuItemClick evento viene generato quando si fa clic su una voce di menu Menu in un controllo.The MenuItemClick event is raised when a menu item is clicked in a Menu control. In questo modo è possibile fornire un gestore eventi che esegue una routine personalizzata, ad esempio la sincronizzazione con un altro controllo nella pagina, ogni volta che si verifica questo evento.This allows you to provide an event handler that performs a custom routine, such as synchronizing with another control on the page, whenever this event occurs.

Un MenuEventArgs oggetto viene passato al gestore eventi, che consente di accedere alle proprietà della voce di menu che ha generato l'evento.A MenuEventArgs object is passed to the event handler, which allows you to access the properties of the menu item that raised the event.

Per altre informazioni su come gestire gli eventi, vedere la gestione e generazione di eventi.For more information about how to handle events, see Handling and Raising Events.

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