FtpWebRequest.EndGetRequestStream(IAsyncResult) 메서드

public:
 override System::IO::Stream ^ EndGetRequestStream(IAsyncResult ^ asyncResult);

public override System.IO.Stream EndGetRequestStream (IAsyncResult asyncResult);

override this.EndGetRequestStream : IAsyncResult -> System.IO.Stream

Public Overrides Function EndGetRequestStream (asyncResult As IAsyncResult) As Stream

매개 변수

반환

이 인스턴스와 연결된 쓰기 가능한 Stream 인스턴스입니다.

예외

예제

다음 코드 예제에서는 요청의 스트림을 가져오기 위해 비동기 작업을 종료하는 방법을 보여 줍니다. 이 코드 예제는에 대해 제공 된 큰 예제의 일부는 FtpWebRequest 클래스 개요입니다.

private:
   static void EndGetStreamCallback( IAsyncResult^ ar )
   {
      FtpState^ state = dynamic_cast<FtpState^>(ar->AsyncState);
      Stream^ requestStream = nullptr;

      // End the asynchronous call to get the request stream.
      try
      {
         requestStream = state->Request->EndGetRequestStream( ar );

         // Copy the file contents to the request stream.
         const int bufferLength = 2048;
         array<Byte>^buffer = gcnew array<Byte>(bufferLength);
         int count = 0;
         int readBytes = 0;
         FileStream^ stream = File::OpenRead( state->FileName );
         do
         {
            readBytes = stream->Read( buffer, 0, bufferLength );
            requestStream->Write( buffer, 0, bufferLength );
            count += readBytes;
         }
         while ( readBytes != 0 );
         Console::WriteLine( "Writing {0} bytes to the stream.", count );

         // IMPORTANT: Close the request stream before sending the request.
         requestStream->Close();

         // Asynchronously get the response to the upload request.
         state->Request->BeginGetResponse( gcnew AsyncCallback( EndGetResponseCallback ), state );
      }
      // Return exceptions to the main application thread.
      catch ( Exception^ e ) 
      {
         Console::WriteLine( "Could not get the request stream." );
         state->OperationException = e;
         state->OperationComplete->Set();
         return;
      }
   }

private static void EndGetStreamCallback(IAsyncResult ar)
{
    FtpState state = (FtpState) ar.AsyncState;

    Stream requestStream = null;
    // End the asynchronous call to get the request stream.
    try
    {
        requestStream = state.Request.EndGetRequestStream(ar);
        // Copy the file contents to the request stream.
        const int bufferLength = 2048;
        byte[] buffer = new byte[bufferLength];
        int count = 0;
        int readBytes = 0;
        FileStream stream = File.OpenRead(state.FileName);
        do
        {
            readBytes = stream.Read(buffer, 0, bufferLength);
            requestStream.Write(buffer, 0, readBytes);
            count += readBytes;
        }
        while (readBytes != 0);
        Console.WriteLine ("Writing {0} bytes to the stream.", count);
        // IMPORTANT: Close the request stream before sending the request.
        requestStream.Close();
        // Asynchronously get the response to the upload request.
        state.Request.BeginGetResponse(
            new AsyncCallback (EndGetResponseCallback),
            state
        );
    }
    // Return exceptions to the main application thread.
    catch (Exception e)
    {
        Console.WriteLine("Could not get the request stream.");
        state.OperationException = e;
        state.OperationComplete.Set();
        return;
    }
}

설명

작업이 완료되지 않은 경우 메서드는 EndGetRequestStream 작업이 완료될 때까지 차단합니다. 작업이 완료되었는지 여부를 확인하려면 를 호출EndGetRequestStream하기 전에 속성을 검사IsCompleted.

"예외" EndGetRequestStream 에 명시된 예외 외에도 쓰기 위해 스트림을 여는 동안 throw된 예외를 다시 throw합니다.

적용 대상

추가 정보

• FtpWebResponse
• FtpStatusCode
• WebRequestMethods.Ftp
• WebRequest
• WebResponse
• WebClient