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SiteMapProvider.ParentProvider Property

Gets or sets the parent SiteMapProvider object of the current provider.

Namespace:  System.Web
Assembly:  System.Web (in System.Web.dll)

'Declaration
Public Overridable Property ParentProvider As SiteMapProvider

Property Value

Type: System.Web.SiteMapProvider
The parent provider of the current SiteMapProvider.

All classes that implement the abstract SiteMapProvider class can support the concept of a site map provider hierarchy. Any hierarchical relationships between providers are maintained outside the scope of a SiteMapProviderCollection collection by the providers themselves. For an example of a functional provider hierarchy, see XmlSiteMapProvider.

The following code example demonstrates how to implement the ParentProvider property in a class that implements the abstract SiteMapProvider class.

This code example is part of a larger example provided for the SiteMapProvider class.

    ' 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

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0
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