SiteMapNodeCollection.Contains(SiteMapNode) Methode

Definition

Ermittelt, ob die Auflistung ein bestimmtes SiteMapNode-Objekt enthält.Determines whether the collection contains a specific SiteMapNode object.

public:
 virtual bool Contains(System::Web::SiteMapNode ^ value);
public virtual bool Contains (System.Web.SiteMapNode value);
abstract member Contains : System.Web.SiteMapNode -> bool
override this.Contains : System.Web.SiteMapNode -> bool
Public Overridable Function Contains (value As SiteMapNode) As Boolean

Parameter

value
SiteMapNode

Das SiteMapNode, das in der SiteMapNodeCollection gesucht werden soll.The SiteMapNode to locate in the SiteMapNodeCollection.

Gibt zurück

true, wenn SiteMapNodeCollection das angegebene SiteMapNode enthält, andernfalls false.true if the SiteMapNodeCollection contains the specified SiteMapNode; otherwise, false.

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie die Contains - IndexOf Methode und die SiteMapNodeCollection -Methode der-Klasse verwendet werden.The following code example demonstrates how to use the Contains and IndexOf methods of the SiteMapNodeCollection class. Der Code überprüft zwei Anbieter, AspNetXmlSiteMapProvider und MyXmlSiteMapProviderfür untergeordnete Knoten des Stamm Knotens, die Duplikate sind.The code checks two providers, AspNetXmlSiteMapProvider and MyXmlSiteMapProvider, for child nodes of the root node that are duplicates.

String providername1 = "AspNetXmlSiteMapProvider";
String providername2 = "MyXmlSiteMapProvider";
SiteMapProviderCollection providers = SiteMap.Providers;

if (providers[providername1] != null && providers[providername2] != null)
{
  SiteMapProvider provider1 = providers[providername1];
  SiteMapProvider provider2 = providers[providername2];
  SiteMapNodeCollection collection1 = provider1.RootNode.ChildNodes;
  SiteMapNodeCollection collection2 = provider2.RootNode.ChildNodes;
  int matches = 0;
  foreach (SiteMapNode node in collection1)
  {
    if (collection2.Contains(node))
    {
      Response.Write("Match found at " +
        providername1 + ", index = " +
        collection1.IndexOf(node) + " with " +
        providername2 + ", index = " +
        collection2.IndexOf(node) + ".<br />");
      matches++;
    }
  }
  Response.Write("Number of matches found = " +
    matches.ToString() + ".");
}
else
{
  Response.Write(providername1 + " or " +
    providername2 + " not found.");
}
Dim providername1 As String = "xAspNetXmlSiteMapProvider"
Dim providername2 As String = "MyXmlSiteMapProvider"
Dim providers As SiteMapProviderCollection = SiteMap.Providers

If Not (providers(providername1) Is Nothing) AndAlso Not (providers(providername2) Is Nothing) Then
  Dim provider1 As SiteMapProvider = providers(providername1)
  Dim provider2 As SiteMapProvider = providers(providername2)
  Dim collection1 As SiteMapNodeCollection = provider1.RootNode.ChildNodes
  Dim collection2 As SiteMapNodeCollection = provider2.RootNode.ChildNodes
  Dim matches As Integer = 0
  Dim node As SiteMapNode
  For Each node In collection1
    If collection2.Contains(node) Then
      Response.Write("Match found at " & _
      providername1 & ", index = " & _
      collection1.IndexOf(node) & " with " & _
      providername2 & ", index = " & _
      collection2.IndexOf(node) & ".<br />")
      matches += 1
    End If
  Next node
  Response.Write("Number of matches found = " & _
  matches.ToString() + ".")
Else
  Response.Write(providername1 & " or " & _
  providername2 & " not found.")
End If    

Hinweise

Die Contains -Methode bestimmt Gleichheit durch Aufrufen Object.Equals der-Methode.The Contains method determines equality by calling the Object.Equals method.

Gilt für:

Siehe auch