MenuItemBindingCollection.Add(MenuItemBinding) Método

Definição

Espaço de Nomes:
System.Web.UI.WebControls
Assemblagem:
System.Web.dll

Acrescenta o objeto especificado MenuItemBinding ao final da coleção.

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

Parâmetros

binding
MenuItemBinding

O MenuItemBinding para anexar ao final da coleção.

Devoluções

Int32

O índice onde foi MenuItemBinding inserido na coleção.

Exemplos

O seguinte exemplo de código demonstra como usar o Add método para adicionar um MenuItemBinding objeto ao final da DataBindings coleção de um Menu controlo. Para que este exemplo funcione corretamente, deve copiar os dados XML de exemplo abaixo para um ficheiro chamado 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>

Segue-se um exemplo de dados de mapa de sítios para o exemplo anterior.

<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>

Observações

Use o Add método para anexar o objeto especificado MenuItemBinding ao final da coleção.

Note

Podes adicionar valores nulos e duplicar MenuItemBinding objetos à coleção.

Como alternativa, pode inserir um MenuItemBinding objeto na coleção num índice específico usando o Insert método.

Note

A ordem em que MenuItemBinding os objetos aparecem na coleção não afeta a forma como esses objetos são aplicados aos itens do menu num Menu controlo.

Aplica-se a

Ver também