/// <summary>
/// 将缓冲区的数据写入到流里面去
/// </summary>
/// <param name="stream">数据流</param>
/// <param name="buffer">缓冲区</param>
/// <returns>是否写入成功</returns>
protected OperateResult WriteStream(Stream stream, byte[] buffer)
{
ManualResetEvent WaitDone = new ManualResetEvent(false);
FileStateObject stateObject = new FileStateObject( );
stateObject.WaitDone = WaitDone;
stateObject.Stream = stream;
try
{
stream.BeginWrite(buffer, 0, buffer.Length, new AsyncCallback(WriteStreamCallBack), stateObject);
}
catch (Exception ex)
{
LogNet?.WriteException(ToString( ), ex);
stateObject = null;
WaitDone.Close( );
return(new OperateResult( ));
}
WaitDone.WaitOne( );
WaitDone.Close( );
if (stateObject.IsError)
{
return(new OperateResult( )
{
Message = stateObject.ErrerMsg
});
}
else
{
return(OperateResult.CreateSuccessResult( ));
}
}
/*****************************************************************************
*
* 说明：
* 下面的两个模块代码指示了如何读写文件
*
********************************************************************************/
#region Read Stream
/// <summary>
/// 读取流中的数据到缓存区
/// </summary>
/// <param name="stream">数据流</param>
/// <param name="buffer">缓冲区</param>
/// <returns>带有成功标志的读取数据长度</returns>
protected OperateResult <int> ReadStream(Stream stream, byte[] buffer)
{
ManualResetEvent WaitDone = new ManualResetEvent(false);
FileStateObject stateObject = new FileStateObject
{
WaitDone = WaitDone,
Stream = stream,
DataLength = buffer.Length,
Buffer = buffer
};
try
{
stream.BeginRead(buffer, 0, stateObject.DataLength, new AsyncCallback(ReadStreamCallBack), stateObject);
}
catch (Exception ex)
{
LogNet?.WriteException(ToString( ), ex);
stateObject = null;
WaitDone.Close( );
return(new OperateResult <int>( ));
}
WaitDone.WaitOne( );
WaitDone.Close( );
if (stateObject.IsError)
{
return(new OperateResult <int>( )
{
Message = stateObject.ErrerMsg
});
}
else
{
return(OperateResult.CreateSuccessResult(stateObject.AlreadyDealLength));
}
}