SiteMapProvider.ParentProvider Eigenschaft

public:
 virtual property System::Web::SiteMapProvider ^ ParentProvider { System::Web::SiteMapProvider ^ get(); void set(System::Web::SiteMapProvider ^ value); };

public virtual System.Web.SiteMapProvider ParentProvider { get; set; }

member this.ParentProvider : System.Web.SiteMapProvider with get, set

Public Overridable Property ParentProvider As SiteMapProvider

Eigenschaftswert

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie die ParentProvider -Eigenschaft in einer Klasse implementiert wird, SiteMapProvider die die abstrakte-Klasse implementiert.The following code example demonstrates how to implement the ParentProvider property in a class that implements the abstract SiteMapProvider class.

Dieses Codebeispiel ist Teil eines größeren Beispiels, das für die SiteMapProvider -Klasse bereitgestellt wird.This code example is part of a larger example provided for the SiteMapProvider class.

// Implement the ParentProvider property.
public override SiteMapProvider ParentProvider
{
  get
  {
    return parentSiteMapProvider;
  }
  set
  {
    parentSiteMapProvider = value;
  }
}

// Implement the RootProvider property.
public override SiteMapProvider RootProvider
{
  get
  {
    // If the current instance belongs to a provider hierarchy, it
    // cannot be the RootProvider. Rely on the ParentProvider.
    if (this.ParentProvider != null)
    {
      return ParentProvider.RootProvider;
    }
    // If the current instance does not have a ParentProvider, it is
    // not a child in a hierarchy, and can be the RootProvider.
    else
    {
      return this;
    }
  }
}

' Implement the ParentProvider property.
Public Overrides Property ParentProvider() As SiteMapProvider
  Get
    Return parentSiteMapProvider
  End Get
  Set(ByVal value As SiteMapProvider)
    parentSiteMapProvider = Value
  End Set
End Property

' Implement the RootProvider property.
Public Overrides ReadOnly Property RootProvider() As SiteMapProvider
  Get
    ' If the current instance belongs to a provider hierarchy, it
    ' cannot be the RootProvider. Rely on the ParentProvider.
    If Not (Me.ParentProvider Is Nothing) Then
      Return ParentProvider.RootProvider
      ' If the current instance does not have a ParentProvider, it is
      ' not a child in a hierarchy, and can be the RootProvider.
    Else
      Return Me
    End If
  End Get
End Property

Hinweise

Alle Klassen, die die abstrakte SiteMapProvider -Klasse implementieren, können das Konzept einer Site Übersichts Anbieter Hierarchie unterstützen.All classes that implement the abstract SiteMapProvider class can support the concept of a site map provider hierarchy. Alle hierarchischen Beziehungen zwischen Anbietern werden von den Anbietern selbst außerhalb SiteMapProviderCollection des Bereichs einer Sammlung verwaltet.Any hierarchical relationships between providers are maintained outside the scope of a SiteMapProviderCollection collection by the providers themselves. Ein Beispiel für eine Funktions Anbieter Hierarchie finden XmlSiteMapProviderSie unter.For an example of a functional provider hierarchy, see XmlSiteMapProvider.

Gilt für:

Siehe auch

• RootProvider