MenuItemCollection.Remove(MenuItem) Método

Definição

Remove o objeto MenuItem especificado do objeto MenuItemCollection.Removes the specified MenuItem object from the MenuItemCollection object.

public:
 void Remove(System::Web::UI::WebControls::MenuItem ^ value);
public void Remove (System.Web.UI.WebControls.MenuItem value);
member this.Remove : System.Web.UI.WebControls.MenuItem -> unit
Public Sub Remove (value As MenuItem)

Parâmetros

value
MenuItem

O objeto MenuItem a ser removido.The MenuItem object to remove.

Exceções

value é null.value is null.

Exemplos

O exemplo de código a seguir demonstra como usar o Remove método para remover programaticamente um MenuItem objeto de um MenuItemCollection objeto.The following code example demonstrates how to use the Remove method to programmatically remove a MenuItem object from a MenuItemCollection object.


<%@ 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)
    {
      // Retrieve the root menu item from the Items
      // collection of the Menu control.
      MenuItem homeMenuItem = NavigationMenu.Items[0];

      // Retrieve the Movie submenu item from the ChildItems
      // collection of the root menu item.
      MenuItem movieSubMenuItem = NavigationMenu.FindItem(@"Home\Movies");

      // Remove the Movie submenu item.
      if (movieSubMenuItem != null)
      {
        homeMenuItem.ChildItems.Remove(movieSubMenuItem);
      }
    }
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>MenuItemCollection Remove Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>MenuItemCollection Remove Example</h3>
    
      <asp:menu id="NavigationMenu"
        orientation="Vertical"
        target="_blank" 
        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>

    </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
    
      ' Retrieve the root menu item from the Items
      ' collection of the Menu control.
      Dim homeMenuItem As MenuItem = NavigationMenu.Items(0)

      ' Retrieve the Movie submenu item from the ChildItems
      ' collection of the root menu item.
      Dim movieSubMenuItem As MenuItem = NavigationMenu.FindItem("Home\Movies")

      ' Remove the Movie submenu item.
      If movieSubMenuItem IsNot Nothing Then
      
        homeMenuItem.ChildItems.Remove(movieSubMenuItem)
        
      End If
        
    End If
        
  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>MenuItemCollection Remove Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>MenuItemCollection Remove Example</h3>
    
      <asp:menu id="NavigationMenu"
        orientation="Vertical"
        target="_blank" 
        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>

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

Comentários

Use o Remove método para remover o item de menu especificado da coleção.Use the Remove method to remove the specified menu item from the collection. Todos os itens que seguem esse item de menu são movidos para cima para preencher a posição vaga.All items that follow that menu item are then moved up to fill in the vacant position. Os índices dos itens movidos também são atualizados.The indexes of the moved items are also updated.

Observação

O MenuItemCollection objeto pode conter valores nulos, bem como objetos duplicados MenuItem .The MenuItemCollection object can contain null values, as well as duplicate MenuItem objects.

Como alternativa, você pode remover um item de menu de um índice específico na coleção usando o RemoveAt método.As an alternative, you can remove a menu item from a specific index in the collection by using the RemoveAt method. Você também pode remover todos os itens de menu da coleção usando o Clear método.You can also remove all menu items from the collection by using the Clear method.

Aplica-se a

Confira também