DiscoveryReference.ReadDocument(Stream) 方法

參考

定義

命名空間:: System.Web.Services.Discovery

組件:: System.Web.Services.dll

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

讀取傳遞的 Stream，並傳回類別的執行個體 (表示參考文件的型別)。

public:
 abstract System::Object ^ ReadDocument(System::IO::Stream ^ stream);

public abstract object ReadDocument (System.IO.Stream stream);

abstract member ReadDocument : System.IO.Stream -> obj

Public MustOverride Function ReadDocument (stream As Stream) As Object

參數

stream: Stream

包含參考文件的 Stream。

傳回

Object

Object，包含符合參考文件之型別的基礎型別。

範例

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

class MyDiscoveryDocumentClass
{
   static void Main()
   {
      DiscoveryDocument myDiscoveryDocument;
      StreamReader myStreamReader =
         new StreamReader("c:\\Inetpub\\wwwroot\\dataservice.disco");
      FileStream myStream =
         new 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 =  new MyDiscoveryReferenceClass();

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

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

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

      myStreamReader.Close();
      myStream.Close();
   }
}

// Class derived from DiscoveryReference class and overriding its 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);
   }
}

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

Class MyDiscoveryDocumentClass
  Public Shared Sub Main()

      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 Discovery Reference class.")

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

      ' Variable of type DiscoveryReference class defined.
      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 = "http://localhost/dataservice.disco"
      Console.WriteLine("Url is : " & myDiscoveryReference.Url)

      ' Resolve the URL
      myDiscoveryReference.Resolve()

      myStreamReader.Close()
      myStream.Close()
   End Sub

End Class


' Class derived from DiscoveryReference class and overriding its 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

備註

傳回值一律為 Object 。不過，基礎類型會根據參考的檔案類型而有所不同。例如，傳入的 Stream SchemaReference.ReadDocument 會傳回的 XmlSchema 實例。

適用於

共用方式為

DiscoveryReference.ReadDocument(Stream) 方法

定義

參數

傳回

範例

備註

適用於

其他資源