c＃繼承自Stream，Binary Writer Works，Stream Writer沒有

Question

我創建了這個對象，以便將使用TcpClient的API從.net移植到silverlight。它是使用流中的套接字和讀寫器寫入的。正如它發生的API使用二進制讀/寫器，所以一切工作正常。在測試時，看起來StreamWriter在編寫時並不會調用OnWrite委託。我很好奇，如果任何人都可以闡明這一點。

真的，這個類的唯一的事情是OnRead & OnWrite當讀或寫流時調用。就我而言，他們將工作交給了一個Socket。

public class NotifyStream:Stream 
{ 
    public delegate int ReadDelegate (byte[] buffer, int offset, int count); 
    public delegate void WriteDelegate(byte[] buffer, int offset, int count); 

    public ReadDelegate OnRead; 
    public WriteDelegate OnWrite; 

    public override void Flush() 
    { 
     // TODO: Implement this method 
     //throw new NotImplementedException(); 
    } 

    public override long Seek(long offset, SeekOrigin origin) 
    { 
     // TODO: Implement this method 
     return 0; 
    } 

    public override void SetLength(long value) 
    { 
     // TODO: Implement this method 
     // throw new NotImplementedException(); 
    } 

    public override int Read(byte[] buffer, int offset, int count) 
    { 
     // TODO: Implement this method 
     if (OnRead != null) 
     { 
      return OnRead(buffer, offset, count); 
     } 
     else 
     { 
      return 0; 
     } 
    } 

    public override void Write(byte[] buffer, int offset, int count) 
    { 
     // TODO: Implement this method 
     if (OnWrite != null) 
     { 
      OnWrite(buffer, offset, count); 
     } 
    } 

    public override bool CanRead 
    { 
     get 
     { 
      // TODO: Implement this property getter 
      return true; 
     } 
    } 

    public override bool CanSeek 
    { 
     get 
     { 
      // TODO: Implement this property getter 
      return false; 
     } 
    } 

    public override bool CanWrite 
    { 
     get 
     { 
      // TODO: Implement this property getter 
      return true; 
     } 
    } 

    public override long Length 
    { 
     get 
     { 
      // TODO: Implement this property getter 
      return 1024; 
     } 
    } 

    public override long Position 
    { 
     get 
     { 
      // TODO: Implement this property getter 
      return 0; 
     } 
     set 
     { 
      // TODO: Implement this property setter 
      //throw new NotImplementedException(); 
     } 
    } 
} 

Answer 1

StreamWriter有一個內部緩衝區，它會在寫入流之前填充它。

致電Flush()對作者。