DiscoveryReference.Resolve Method ()

Downloads the referenced document at Url to resolve whether the referenced document is valid.

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

public:
void Resolve ()
public void Resolve ()
public function Resolve ()
Not applicable.

Exception typeCondition

InvalidOperationException

The ClientProtocol property is a null reference (Nothing in Visual Basic).

Downloads the referenced document and then invokes the overloaded Resolve member that takes a MIME type and a Stream. If the MIME type and the contents of stream match those expected by the reference type, then the contents of stream are added to the References and Documents properties of ClientProtocol.

#using <System.dll>
#using <System.Xml.dll>
#using <System.Web.Services.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 its 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 = __super::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()
{
   DiscoveryDocument^ myDiscoveryDocument;
   StreamReader^ myStreamReader = gcnew StreamReader( "c:\\Inetpub\\wwwroot\\dataservice.disco" );
   FileStream^ myStream = gcnew FileStream( "C:\\MyDiscovery.disco",FileMode::OpenOrCreate );
   Console::WriteLine( "Demonstrating Discovery Reference class." );
   
   // Read discovery file.
   myDiscoveryDocument = DiscoveryDocument::Read( myStreamReader );
   
   // Variable of type DiscoveryReference class defined.
   MyDiscoveryReferenceClass^ myDiscoveryReference;
   myDiscoveryReference = gcnew MyDiscoveryReferenceClass;
   DiscoveryClientProtocol^ myDiscoveryClientProtocol = gcnew DiscoveryClientProtocol;
   myDiscoveryClientProtocol->Credentials = CredentialCache::DefaultCredentials;
   
   // Set 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 = "http://localhost/dataservice.disco";
   Console::WriteLine( "Url is: {0}", myDiscoveryReference->Url );
   
   // Resolve the URL.
   myDiscoveryReference->Resolve();
   myStreamReader->Close();
   myStream->Close();
}

Windows 98, Windows Server 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

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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