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MenuItemBindingCollection.Add(MenuItemBinding) Metoda

Definice

Připojí zadaný MenuItemBinding objekt na konec kolekce.

public:
 int Add(System::Web::UI::WebControls::MenuItemBinding ^ binding);
public int Add (System.Web.UI.WebControls.MenuItemBinding binding);
member this.Add : System.Web.UI.WebControls.MenuItemBinding -> int
Public Function Add (binding As MenuItemBinding) As Integer

Parametry

binding
MenuItemBinding

Připojení MenuItemBinding ke konci kolekce

Návraty

Int32

Index, na kterém MenuItemBinding byl vložen do kolekce.

Příklady

Následující příklad kódu ukazuje, jak použít metodu Add k připojení MenuItemBinding objektu na konec DataBindings kolekce Menu ovládacího prvku. Aby tento příklad fungoval správně, musíte zkopírovat ukázková data XML níže do souboru s názvem 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)
    {
      // Create the menu item bindings for the Menu control.
      MenuItemBinding binding;
      
      binding = CreateMenuItemBinding("MapHomeNode", 0, "title", "url");
      NavigationMenu.DataBindings.Add(binding);

      binding = CreateMenuItemBinding("MapNode", 1, "title", "url");
      NavigationMenu.DataBindings.Add(binding);

      binding = CreateMenuItemBinding("MapNode", 2, "title", "url");
      NavigationMenu.DataBindings.Add(binding);
    }
  }

  // This is a helper method to create a MenuItemBinding 
  // object from the specified parameters.
  MenuItemBinding CreateMenuItemBinding(String dataMember, int depth, String textField, String navigateUrlField)
  {
    // Create a new MenuItemBinding object.
    MenuItemBinding binding = new MenuItemBinding();

    // Set the properties of the MenuItemBinding object.
    binding.DataMember = dataMember;
    binding.Depth = depth;
    binding.TextField = textField;
    binding.NavigateUrlField = navigateUrlField;

    return binding;
  }
    
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>MenuItemBindingCollection Add Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>MenuItemBindingCollection Add Example</h3>
    
      <asp:menu id="NavigationMenu"
        staticdisplaylevels="2"
        staticsubmenuindent="10" 
        orientation="Vertical"
        target="_blank"
        datasourceid="MenuSource"
        runat="server">        
      </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
    
      ' Create the menu item bindings for the Menu control.
      Dim binding As MenuItemBinding
      
      binding = CreateMenuItemBinding("MapHomeNode", 0, "title", "url")
      NavigationMenu.DataBindings.Add(binding)

      binding = CreateMenuItemBinding("MapNode", 1, "title", "url")
      NavigationMenu.DataBindings.Add(binding)

      binding = CreateMenuItemBinding("MapNode", 2, "title", "url")
      NavigationMenu.DataBindings.Add(binding)
   
    End If
    
  End Sub

  ' This is a helper method to create a MenuItemBinding 
  ' object from the specified parameters.
  Function CreateMenuItemBinding(ByVal dataMember As String, ByVal depth As Integer, ByVal textField As String, ByVal navigateUrlField As String) As MenuItemBinding
  
    ' Create a new MenuItemBinding object.
    Dim binding As New MenuItemBinding()

    ' Set the properties of the MenuItemBinding object.
    binding.DataMember = dataMember
    binding.Depth = depth
    binding.TextField = textField
    binding.NavigateUrlField = navigateUrlField

    Return binding
    
  End Function
    
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>MenuItemBindingCollection Add Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>MenuItemBindingCollection Add Example</h3>
    
      <asp:menu id="NavigationMenu"
        staticdisplaylevels="2"
        staticsubmenuindent="10" 
        orientation="Vertical"
        target="_blank"
        datasourceid="MenuSource"
        runat="server">        
      </asp:menu>
      
      <asp:xmldatasource id="MenuSource"
        datafile="Map.xml"
        runat="server"/>        

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

Následuje ukázka dat mapy webu pro předchozí příklad.

<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>

Poznámky

Add Pomocí metody připojte zadaný MenuItemBinding objekt na konec kolekce.

Poznámka

Do kolekce můžete přidat hodnoty null a duplicitní MenuItemBinding objekty.

Jako alternativu MenuItemBinding můžete v kolekci vložit objekt do konkrétního indexu Insert pomocí metody.

Poznámka

Pořadí, ve kterém MenuItemBinding se v kolekci zobrazují objekty, nemá žádný vliv na to, jak se tyto objekty použijí u položek nabídky v ovládacím Menu prvku.

Platí pro

Viz také