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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()

ExceptionCondition
InvalidOperationException

The ClientProtocol property is nullptr.

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();
}
#using <mscorlib.dll>
#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.
__gc class MyDiscoveryReferenceClass : public DiscoveryReference {
private:
   String*  myDocumentUrl;
public:
__property String* get_DefaultFilename() {
         return S"dataservice.disco";
      }


public:
   Object* ReadDocument(Stream* stream) {
      return stream;
   }

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

protected:
   void Resolve(String* contentType, Stream* stream) {}

public:
__property String* get_Url() {
         return myDocumentUrl;
      }
__property void set_Url(String* value) {
         myDocumentUrl = value;
      }


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

int main() {
   DiscoveryDocument* myDiscoveryDocument;
   StreamReader* myStreamReader = 
      new StreamReader(S"c:\\Inetpub\\wwwroot\\dataservice.disco");
   FileStream* myStream = 
      new FileStream(S"C:\\MyDiscovery.disco", FileMode::OpenOrCreate);
   Console::WriteLine(S"Demonstrating Discovery Reference class.");

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

   // Variable of type DiscoveryReference class defined.
   MyDiscoveryReferenceClass* myDiscoveryReference;
   myDiscoveryReference = new MyDiscoveryReferenceClass();

   DiscoveryClientProtocol* myDiscoveryClientProtocol = 
      new DiscoveryClientProtocol();
   myDiscoveryClientProtocol->Credentials =
      CredentialCache::DefaultCredentials;

   // Set client protocol.
   myDiscoveryReference->ClientProtocol = myDiscoveryClientProtocol;

   // Read the default file name.
   Console::WriteLine(S"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 = S"http://localhost/dataservice.disco";
   Console::WriteLine(S"Url is: {0}", myDiscoveryReference->Url);

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

   myStreamReader->Close();
   myStream->Close();
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
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