我写了一个简单的异步 TCP-Server - 它运行良好。但现在我想在控制台测试程序上输出接收到的数据。问题是,这行不通!如果我将 MainThread 连接到 EventHandler 程序什么也不做。调试显示 sc05Server_DataAvailable 被调用,但没有发生任何事情。该程序仍然响应。
这里的代码:
private void ReadCallback(IAsyncResult asyncResult)
{
Sc05BdClient sc05BdClient = asyncResult.AsyncState as Sc05BdClient;
if (sc05BdClient == null) return;
NetworkStream networkStream = sc05BdClient.NetworkStream;
int read = networkStream.EndRead(asyncResult);
if (read == 0)
{
lock (clients)
{
clients.Remove(sc05BdClient);
return;
}
}
string data = Encoding.GetString(sc05BdClient.Buffer, 0, read);
System.Diagnostics.Debug.Print(data);
OnDataAvailable(this, new DataAvailableEventArgs(data)); <---- here Handler is called
networkStream.BeginRead(sc05BdClient.Buffer, 0, sc05BdClient.Buffer.Length, ReadCallback, sc05BdClient);
}
public event EventHandler<DataAvailableEventArgs> DataAvailable;
protected virtual void OnDataAvailable(object sender, DataAvailableEventArgs e)
{
EventHandler<DataAvailableEventArgs> handler = DataAvailable;
if (handler != null)
handler(sender, e);
}
public class DataAvailableEventArgs : EventArgs
{
public string Data;
public DataAvailableEventArgs(string data)
{
Data = data;
}
}
主程序:
class Program
{
static void Main()
{
Sc05BdServer sc05BdServer = new Sc05BdServer(IPAddress.Any, 2006);
sc05BdServer.DataAvailable += sc05BdServer_DataAvailable;
sc05BdServer.Start();
Console.ReadKey();
sc05BdServer.Stop();
}
static void sc05BdServer_DataAvailable(object sender, DataAvailableEventArgs e)
{
Console.WriteLine(e.Data); <--- this is called once
}
}
我认为这与线程有关 - 但我不知道如何使用它们。