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#2
何事惊慌2014-08-01 22:27
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1.TCP异步通讯到底有什么作用？？？哪位大神能给我举个例子来说说不Orz
2.关于下面这段代码中WaitOne这个东西（阻止当前线程），这样写了以后那不是和TCP同步通讯是一样的效果了，都是要阻塞当前线程，那我干嘛还这么麻烦的写一个异步程序，直接写一个同步的多好啊。（这个程序是一本书上的TCP异步的例子）
程序代码：private void but_connect_Click(object sender, EventArgs e)
{
try
{
client = new TcpClient(AddressFamily.InterNetwork);
IPAddress ipadd = IPAddress.Parse(txt_hostname.Text.ToString());
AsyncCallback requestCallBack = new AsyncCallback(RequestCallBack);
allDone.Reset();
client.BeginConnect(ipadd, 3000, requestCallBack, client);
//public object Invoke(Delegate method, params object[] args);调用callback
lb_state.Invoke(setlistboxcallback, string.Format("本机终结点：{0}", client.Client.LocalEndPoint));
lb_state.Invoke(setlistboxcallback, "开始与服务器连接...");
allDone.WaitOne();
}
catch (Exception ee)
{
lb_state.Invoke(setlistboxcallback, string.Format("错误：{0}", ee.Message));
}
finally
{
}
}
{
try
{
client = new TcpClient(AddressFamily.InterNetwork);
IPAddress ipadd = IPAddress.Parse(txt_hostname.Text.ToString());
AsyncCallback requestCallBack = new AsyncCallback(RequestCallBack);
allDone.Reset();
client.BeginConnect(ipadd, 3000, requestCallBack, client);
//public object Invoke(Delegate method, params object[] args);调用callback
lb_state.Invoke(setlistboxcallback, string.Format("本机终结点：{0}", client.Client.LocalEndPoint));
lb_state.Invoke(setlistboxcallback, "开始与服务器连接...");
allDone.WaitOne();
}
catch (Exception ee)
{
lb_state.Invoke(setlistboxcallback, string.Format("错误：{0}", ee.Message));
}
finally
{
}
}
3.解决TCP异步这个问题，直接开启多线程不就好了吗，干嘛还要弄异步这个东西，多麻烦啊？？