DiscoveryReference-Klasse

Die Basisklasse für Verweise, die mit dem XML Web Services Discovery-Tool ermittelt werden können.

Namespace: System.Web.Services.Discovery
Assembly: System.Web.Services (in system.web.services.dll)

Syntax

'Declaration
Public MustInherit Class DiscoveryReference
'Usage
Dim instance As DiscoveryReference

public abstract class DiscoveryReference

public ref class DiscoveryReference abstract

public abstract class DiscoveryReference

public abstract class DiscoveryReference

Hinweise

ContractReference, SchemaReference und DiscoveryDocumentReference erben von DiscoveryReference und stellen die drei Dokumenttypen dar, die mithilfe des XML Web Services Discovery-Tools ermittelt werden können: Dienstbeschreibungen, XSD-Schemas (XML Schema Definition-Schemas) und Discovery-Dokumente.

Beispiel

Imports System
Imports System.IO
Imports System.Web.Services.Discovery
Imports System.Net

Class MyDiscoveryDocumentClass
   Public Shared Sub Main()
      Try
         Dim myDiscoveryDocument As DiscoveryDocument
         Dim myStreamReader As New StreamReader("c:\Inetpub\wwwroot\dataservice.disco")
         Dim myStream As New FileStream("c:\MyDiscovery.disco", FileMode.OpenOrCreate)
         Console.WriteLine("Demonstrating DiscoveryReference class.")

         ' Read the discovery file.
         myDiscoveryDocument = DiscoveryDocument.Read(myStreamReader)

         ' Create an instance of the DiscoveryReference class.
         Dim myDiscoveryReference As MyDiscoveryReferenceClass
         myDiscoveryReference = New MyDiscoveryReferenceClass()

         Dim myDiscoveryClientProtocol As New DiscoveryClientProtocol()
         myDiscoveryClientProtocol.Credentials = _
             CredentialCache.DefaultCredentials

         ' Set the client protocol.
         myDiscoveryReference.ClientProtocol = myDiscoveryClientProtocol

         ' Read the default file name.
         Console.WriteLine("Default file name is: " _
             & myDiscoveryReference.DefaultFilename)

         ' Write the document.
         myDiscoveryReference.WriteDocument(myDiscoveryDocument, myStream)

         ' Read the document.
         myDiscoveryReference.ReadDocument(myStream)

         ' Set the URL.
         myDiscoveryReference.Url = "https://localhost/dataservice.disco"
         Console.WriteLine("Url is : " + myDiscoveryReference.Url)

         ' Resolve the URL.
         myDiscoveryReference.Resolve()

         myStreamReader.Close()
         myStream.Close()

      Catch e as Exception
         Console.WriteLine("Exception caught! - {0}", e.Message)
      End Try
   
   End Sub

End Class


' Class derived from DiscoveryReference class and overriding it members.
Class MyDiscoveryReferenceClass
   Inherits DiscoveryReference
   Private myDocumentUrl As String

   Public Overrides ReadOnly Property DefaultFilename() As String
      Get
         Return "dataservice.disco"
      End Get
   End Property

   Public Overrides Function _
      ReadDocument(ByVal stream As System.IO.Stream) As Object
      Return stream
   End Function

   Public Overloads Sub Resolve()
      Try
         Dim myDiscoveryRefDocument As DiscoveryDocument
         myDiscoveryRefDocument = MyBase.ClientProtocol.Discover(Url)
      Catch e As Exception
         Throw e
      End Try
   End Sub

   Protected Overloads Overrides Sub _
      Resolve(ByVal contentType As String, ByVal stream As Stream)
   End Sub

   Public Overrides Property Url() As String
      Get
         Return myDocumentUrl
      End Get

      Set(ByVal Value As String)
         myDocumentUrl = Value
      End Set
   End Property

   Public Overrides Sub WriteDocument _
      (ByVal document As Object, ByVal stream As System.IO.Stream)
      Dim myDiscoveryDocument As DiscoveryDocument = _
          CType(document, DiscoveryDocument)
      myDiscoveryDocument.Write(stream)
   End Sub
End Class

using System;
using System.IO;
using System.Web.Services.Discovery;
using System.Net;

class MyDiscoveryDocumentClass
{
   static void Main()
   {
      try {
         DiscoveryDocument myDiscoveryDocument;
         StreamReader myStreamReader = 
             new StreamReader("c:\\Inetpub\\wwwroot\\dataservice.disco");
         FileStream myStream = new FileStream("c:\\MyDiscovery.disco",
             FileMode.OpenOrCreate);
         Console.WriteLine("Demonstrating DiscoveryReference class.");

         // Read discovery file.
         myDiscoveryDocument = DiscoveryDocument.Read(myStreamReader);

         // Create a new instance of the DiscoveryReference class.
         MyDiscoveryReferenceClass myDiscoveryReference;
         myDiscoveryReference =  new MyDiscoveryReferenceClass();

         DiscoveryClientProtocol myDiscoveryClientProtocol = 
             new DiscoveryClientProtocol();
         myDiscoveryClientProtocol.Credentials = 
             CredentialCache.DefaultCredentials;

         // Set the client protocol.
         myDiscoveryReference.ClientProtocol = myDiscoveryClientProtocol;
         
         // Read the default file name.
         Console.WriteLine("Default file name is: " 
             + myDiscoveryReference.DefaultFilename);

         // Write the document.
         myDiscoveryReference.WriteDocument(myDiscoveryDocument,myStream);

         // Read the document.
         myDiscoveryReference.ReadDocument(myStream);

         // Set the URL. 
         myDiscoveryReference.Url = "https://localhost/dataservice.disco";
         Console.WriteLine("Url is: " + myDiscoveryReference.Url);

         // Resolve the URL.
         myDiscoveryReference.Resolve();

         myStreamReader.Close();
         myStream.Close();
      }
      catch (Exception e) 
      {
         Console.WriteLine("Exception caught! - {0}", e.Message);
      }
   }
}

// Class derived from DiscoveryReference class and overriding it members.
class MyDiscoveryReferenceClass : DiscoveryReference
{
   private string myDocumentUrl;
   public override string DefaultFilename
   {
      get
      {
         return "dataservice.disco";
      }
   }

   public override object ReadDocument(Stream stream)
   {
      return stream;
   }

   public new void Resolve()
   {
      try
      {
         DiscoveryDocument myDiscoveryRefDocument;
         myDiscoveryRefDocument = base.ClientProtocol.Discover(Url);
      }
      catch (Exception e)
      {
         throw(e);
      }
   }

   protected override void Resolve(string contentType, Stream stream) {}

   public override string Url
   {
      get
      {
         return myDocumentUrl;
      }

      set
      {
         myDocumentUrl = value;
      }
   }

   public override void WriteDocument(object document, System.IO.Stream stream)
   {
      DiscoveryDocument myDiscoveryDocument = (DiscoveryDocument)document;
      myDiscoveryDocument.Write(stream);
   }
}

#using <System.Xml.dll>
#using <System.Web.Services.dll>
#using <System.dll>

using namespace System;
using namespace System::IO;
using namespace System::Web::Services::Discovery;
using namespace System::Net;

// Class derived from DiscoveryReference class and overriding it members.
ref class MyDiscoveryReferenceClass: public DiscoveryReference
{
private:
   String^ myDocumentUrl;

public:
   property String^ DefaultFilename 
   {
      virtual String^ get() override
      {
         return "dataservice.disco";
      }
   }

   virtual Object^ ReadDocument( Stream^ stream ) override
   {
      return stream;
   }

   void Resolve()
   {
      try
      {
         DiscoveryDocument^ myDiscoveryRefDocument;
         myDiscoveryRefDocument = DiscoveryReference::ClientProtocol->Discover( Url );
      }
      catch ( Exception^ e ) 
      {
         throw e;
      }
   }

protected:
   virtual void Resolve( String^ /*contentType*/, Stream^ /*stream*/ ) override {}

public:
   property String^ Url 
   {
      virtual String^ get() override
      {
         return myDocumentUrl;
      }

      virtual void set( String^ value ) override
      {
         myDocumentUrl = value;
      }
   }

   virtual void WriteDocument( Object^ document, System::IO::Stream^ stream ) override
   {
      DiscoveryDocument^ myDiscoveryDocument = dynamic_cast<DiscoveryDocument^>(document);
      myDiscoveryDocument->Write( stream );
   }
};

int main()
{
   try
   {
      DiscoveryDocument^ myDiscoveryDocument;
      StreamReader^ myStreamReader = gcnew StreamReader( "c:\\Inetpub\\wwwroot\\dataservice.disco" );
      FileStream^ myStream = gcnew FileStream( "c:\\MyDiscovery.disco",FileMode::OpenOrCreate );
      Console::WriteLine( "Demonstrating DiscoveryReference class." );
      
      // Read discovery file.
      myDiscoveryDocument = DiscoveryDocument::Read( myStreamReader );
      
      // Create a new instance of the DiscoveryReference class.
      MyDiscoveryReferenceClass^ myDiscoveryReference;
      myDiscoveryReference = gcnew MyDiscoveryReferenceClass;
      DiscoveryClientProtocol^ myDiscoveryClientProtocol = gcnew DiscoveryClientProtocol;
      myDiscoveryClientProtocol->Credentials = CredentialCache::DefaultCredentials;
      
      // Set the client protocol.
      myDiscoveryReference->ClientProtocol = myDiscoveryClientProtocol;
      
      // Read the default file name.
      Console::WriteLine( "Default file name is: {0}", myDiscoveryReference->DefaultFilename );
      
      // Write the document.
      myDiscoveryReference->WriteDocument( myDiscoveryDocument, myStream );
      
      // Read the document.
      myDiscoveryReference->ReadDocument( myStream );
      
      // Set the URL.
      myDiscoveryReference->Url = "https://localhost/dataservice.disco";
      Console::WriteLine( "Url is: {0}", myDiscoveryReference->Url );
      
      // Resolve the URL.
      myDiscoveryReference->Resolve();
      myStreamReader->Close();
      myStream->Close();
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "Exception caught! - {0}", e->Message );
   }
}

Vererbungshierarchie

System.Object
  System.Web.Services.Discovery.DiscoveryReference
     System.Web.Services.Discovery.ContractReference
     System.Web.Services.Discovery.DiscoveryDocumentReference
     System.Web.Services.Discovery.SchemaReference

Threadsicherheit

Alle öffentlichen statischen (Shared in Visual Basic) Member dieses Typs sind threadsicher. Bei Instanzmembern ist die Threadsicherheit nicht gewährleistet.

Plattformen

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

Siehe auch

Referenz

DiscoveryReference-Member
System.Web.Services.Discovery-Namespace
ContractReference-Klasse
SchemaReference
DiscoveryDocumentReference-Klasse