SiteMapNodeCollection.Contains(SiteMapNode) Methode

  • Referenz

Definition

Namespace:
System.Web
Assembly:
System.Web.dll

Ermittelt, ob die Auflistung ein bestimmtes SiteMapNode-Objekt enthält.

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.

Gibt zurück

Boolean

true, wenn SiteMapNodeCollection das angegebene SiteMapNode enthält, andernfalls false.

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie die Contains Klassen und IndexOf Methoden SiteMapNodeCollection verwendet werden. Der Code überprüft zwei Anbieter und AspNetXmlSiteMapProvider MyXmlSiteMapProvider, auf untergeordnete Knoten des Stammknotens, die Duplikate sind.

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 die Gleichheit durch Aufrufen der Object.Equals Methode.

Gilt für

Siehe auch