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DiscoveryReference::Resolve Method
Visual Studio 2010
Downloads the referenced document at Url to resolve whether the referenced document is valid.
Assembly: System.Web.Services (in System.Web.Services.dll)
| Exception | Condition |
|---|---|
| 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(); }
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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