Aracılığıyla paylaş

MenuItemBindingCollection.Remove(MenuItemBinding) Yöntem

  • Başvuru

Tanım

Ad Alanı:
System.Web.UI.WebControls
Bütünleştirilmiş Kod:
System.Web.dll

Belirtilen MenuItemBinding nesneyi koleksiyondan kaldırır.

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

Parametreler

binding
MenuItemBinding

MenuItemBinding koleksiyondan kaldırılacak.

Örnekler

Aşağıdaki kod örneği, bir MenuItemBinding nesneyi koleksiyondan kaldırmak için yönteminin nasıl kullanılacağını Remove gösterir. Bu örneğin düzgün çalışması için aşağıdaki örnek XML verilerini Map.xml adlı bir dosyaya kopyalamanız gerekir.


<%@ 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);
        
      // Use the Remove method to remove the last MenuItemBinding 
      // object.
        NavigationMenu.DataBindings.Remove(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 Remove Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>MenuItemBindingCollection Remove 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"/>
          <asp:menuitembinding datamember="ExtraMapNode" 
            depth="3"
            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
    
            ' 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)
            
            ' Use the Remove method to remove the MenuItemBinding 
            ' object.
            NavigationMenu.DataBindings.Remove(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 Remove Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>MenuItemBindingCollection Remove 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"/>
          <asp:menuitembinding datamember="ExtraMapNode" 
            depth="3"
            textfield="title" 
            navigateurlfield="url"/>
        </DataBindings>
                
      </asp:menu>
      
      <asp:xmldatasource id="MenuSource"
        datafile="Map.xml"
        runat="server"/>        

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

Aşağıda, önceki örnekteki örnek site haritası verileri verilmiştir.

<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>

Açıklamalar

Remove Belirtilen menü öğesi bağlamasını koleksiyondan kaldırmak için yöntemini kullanın. Bu menü öğesini izleyen tüm öğeler daha sonra boş konumu doldurmak için yukarı taşınır. Taşınan öğelerin dizinleri de güncelleştirilir.

Not

Koleksiyon null değerlerin yanı sıra yinelenen MenuItemBinding nesneler de içerebilir.

Alternatif olarak, yöntemini kullanarak RemoveAt koleksiyondaki belirli bir dizinden menü öğesini kaldırabilirsiniz. Yöntemini kullanarak Clear koleksiyondaki tüm menü öğelerini de kaldırabilirsiniz.

Not

Nesnelerin koleksiyonda MenuItemBinding görünme sırası, bu nesnelerin bir Menu denetimdeki menü öğelerine nasıl uygulandığını etkilemez.

Şunlara uygulanır

Ayrıca bkz.