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SiteMapNodeCollection.Contains(SiteMapNode) Metoda

  • Odwołanie

Definicja

Przestrzeń nazw:
System.Web
Zestaw:
System.Web.dll

Określa, czy kolekcja zawiera określony SiteMapNode obiekt.

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

Parametry

value
SiteMapNode

Element SiteMapNode do zlokalizowania w obiekcie SiteMapNodeCollection.

Zwraca

Boolean

true jeśli element SiteMapNodeCollection zawiera określony SiteMapNode; w przeciwnym razie false.

Przykłady

W poniższym przykładzie kodu pokazano, jak używać Contains metod SiteMapNodeCollection i IndexOf klasy . Kod sprawdza dwóch dostawców i AspNetXmlSiteMapProvider MyXmlSiteMapProvider, dla węzłów podrzędnych węzła głównego, które są duplikatami.

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

Uwagi

Metoda Contains określa równość przez wywołanie Object.Equals metody .

Dotyczy

Zobacz też