MenuItemBindingCollection.Item[Int32] Eigenschaft

Definition

Ruft das MenuItemBinding-Objekt am angegebenen Index aus der Auflistung ab.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

Parameter

i
Int32

Der nullbasierte Index des abzurufenden MenuItemBinding.The zero-based index of the MenuItemBinding to retrieve.

Eigenschaftswert

Die MenuItemBinding am angegebenen Index in der Auflistung.The MenuItemBinding at the specified index in the collection.

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie ein MenuItemBinding -Objekt mithilfe des Indexers aus der-Auflistung abgerufen wird.The following code example demonstrates how to retrieve a MenuItemBinding object from the collection using the indexer. Die Eigenschaften des MenuItemBinding Objekts werden dann Programm gesteuert aktualisiert.The properties of the MenuItemBinding object are then updated programmatically. Damit dieses Beispiel ordnungsgemäß funktioniert, müssen Sie die folgenden XML-Beispiel Daten in eine Datei mit dem Namen "map. xml" kopieren.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>

Im folgenden finden Sie Beispiele für Site Übersichts Daten für das vorherige Beispiel.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>

Hinweise

Verwenden Sie diesen Indexer, um MenuItemBinding mithilfe der Array Notation auf ein-Objekt aus der Auflistung am angegebenen Index zuzugreifen.Use this indexer to access a MenuItemBinding object from the collection at the specified index using array notation. Der Indexer ermöglicht es Ihnen, ein MenuItemBinding -Objekt in der Auflistung direkt zu öffnen, zu ändern oder zu ersetzen.The indexer allows you to access, modify, or replace a MenuItemBinding object in the collection directly.

Gilt für:

Siehe auch