MenuItemBindingCollection.Item[Int32] Propriedade

Definição

Obtém o objeto MenuItemBinding no índice especificado da coleção.Gets the MenuItemBinding object at the specified index from the collection.

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, set
Default Public Property Item(i As Integer) As MenuItemBinding

Parâmetros

i
Int32

O índice de base zero do MenuItemBinding a recuperar.The zero-based index of the MenuItemBinding to retrieve.

Valor da propriedade

MenuItemBinding

O MenuItemBinding no índice especificado na coleção.The MenuItemBinding at the specified index in the collection.

Exemplos

O exemplo de código a seguir demonstra como recuperar um MenuItemBinding objeto da coleção usando o indexador.The following code example demonstrates how to retrieve a MenuItemBinding object from the collection using the indexer. As propriedades do MenuItemBinding objeto são então atualizadas programaticamente.The properties of the MenuItemBinding object are then updated programmatically. Para que este exemplo funcione corretamente, você deve copiar os dados XML de exemplo abaixo para um arquivo chamado Map.xml.For this example to work correctly, you must copy the sample XML data below to a file named Map.xml.


<%@ 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>

Veja a seguir os dados de mapa do site de exemplo para o exemplo anterior.The following is sample site map data for the previous example.

<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>

Comentários

Use este indexador para acessar um MenuItemBinding objeto da coleção no índice especificado usando a notação de matriz.Use this indexer to access a MenuItemBinding object from the collection at the specified index using array notation. O indexador permite que você acesse, modifique ou substitua um MenuItemBinding objeto na coleção diretamente.The indexer allows you to access, modify, or replace a MenuItemBinding object in the collection directly.

Aplica-se a

Confira também