private void ReadCallBack(IAsyncResult iar)
{
try
{
DataRead dataRead = (DataRead)iar.AsyncState;
int recv = dataRead.ns.EndRead(iar);
if (recv != 0)
{
byte[] receBytes = new byte[recv];
Array.Copy(dataRead.msg, 0, receBytes, 0, recv);
if (isExit == false)
{
dataRead = new DataRead(ns, client.ReceiveBufferSize);
ns.BeginRead(dataRead.msg, 0, dataRead.msg.Length, ReadCallBack, dataRead);
}
//这里发送数据事件
PortDataReceived(new ReceBytesEventArge(receBytes));
}
else
{
//这里表示掉线了
portStatus = PortStatus.Closed;
ConnNotify(new ConnStatusChangedEventArgs(DateTime.Now, false, portStatus));
}
}
catch (Exception ex)
{
portStatus = PortStatus.Error;
ConnNotify(new ConnStatusChangedEventArgs(DateTime.Now, false, portStatus));
}
}
private void RequestCallBack(IAsyncResult iar)
{
try
{
portStatus = PortStatus.Connecting;
client = (TcpClient)iar.AsyncState;
client.EndConnect(iar);
portStatus = PortStatus.Connected;
ConnNotify(new ConnStatusChangedEventArgs(DateTime.Now, true, portStatus));
ns = client.GetStream();
DataRead dataRead = new DataRead(ns, client.ReceiveBufferSize);
ns.BeginRead(dataRead.msg, 0, dataRead.msg.Length, ReadCallBack, dataRead);
}
catch (Exception ex)
{
portStatus = PortStatus.Error;
ConnNotify(new ConnStatusChangedEventArgs(DateTime.Now, false, portStatus));
}
}