c# 调用beginreceive的有关问题

c# 调用beginreceive的问题
private   static   void   ReceiveDataCallback(IAsyncResult   ar)
{
DataControl   state   =   (DataControl)ar.AsyncState;
try
{
Socket   localSocket   =   state.WorkSocket;

int   bytes   =   localSocket.EndReceive(ar);
if(bytes   >   0)
{
state.Data   +=   Encoding.ASCII.GetString(state.DataBuffers,   0,   bytes);

localSocket.BeginReceive(state.DataBuffers,   0,   state.DataBuffers.Length,   0,   new   AsyncCallback(ReceiveDataCallback),   state);
}
else
{
if(state.Data.Length   >   0)
{
state.SetEvent(state.Data.Length);
}
}
}
}

最后一个beginreceive怎么也进不去。   也就是说
else
『
if(state.Data.Length   >   0)
{
state.SetEvent(state.Data.Length);
}
}
一直不会被执行

[解决办法]
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