问题：首先设置简单的服务端监听
1 delegate void SetTextEvent(Control ctl, string text);
2 void SetTextLine(Control ctl, string text)
3 {
4 if (ctl.InvokeRequired)
5 ctl.Invoke(new SetTextEvent(SetTextLine), new object[] { ctl, text });
6 else
7 ctl.Text = text + Environment.NewLine + ctl.Text;
8 }
Thread thread = new Thread(doactions);
thread.IsBackground = true;
thread.Start();
1 void doactions()
2 {
3 Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.IP);
4 EndPoint ep = new IPEndPoint(new IPAddress(IPToUInt32("")), 3000);
5 SetTextLine(LogCtl, "绑定端口");
6 try
7 {
8 s.Bind(ep);
9 s.Listen(1024);
10 }
11 catch (Exception ex)
12 { SetTextLine(LogCtl, ex.Message); return; }
13 SetTextLine(LogCtl, "绑定成功！");
14 bool done = true;
15 while (done)
16 {
17 SetTextLine(LogCtl, "等待连接");
18 Socket client = s.Accept();
19 SetTextLine(LogCtl, "连接成功");
20
21 while (client.Connected)
22 {
23 try
24 {
25 byte[] b = new byte[1024];
26 int size = client.Receive(b);
27
28 string receivedstr = Encoding.Default.GetString(b);
29 receivedstr = receivedstr.Trim();
30 SetTextLine(MsgCtl, receivedstr);
31 }
32 catch (Exception ex)
33 {
34 SetTextLine(MsgCtl, ex.Message);
35 SetTextLine(LogCtl, "连接关闭");
36 client.Close();
37 }
38 }
39 }
40 }
奇怪的问题就出现在这里。SetTextLine(MsgCtl, receivedstr);根本无法达到 ctl.Text = text + Environment.NewLine + ctl.Text; 这个目的，效果变成了
ctl.Text = text的效果。而其他地方都是可以的。偏偏，如果把receivedstr这个字符设置为固定值，比如把receivedstr = receivedstr.Trim();改成
receivedstr = DateTime.Now.ToString();那么，就是ctl.Text = text + Environment.NewLine + ctl.Text; 的效果。而从int size = client.Receive(b);得出的byte数组读出却出现问题，真是太奇怪了。还望知道的朋友能告知！困扰了我好久的问题！
下面是我的笨蛋解决方案，用的不是很爽。
解决方法：设置两个处理方法。
void doactions()
{
Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.IP);
EndPoint ep = new IPEndPoint(new IPAddress(IPToUInt32("")), 3000);
SetTextLine(LogCtl, "绑定端口");
try
{
s.Bind(ep);
s.Listen(1024);
}
catch (Exception ex)
{ SetTextLine(LogCtl, ex.Message); return; }
SetTextLine(LogCtl, "绑定成功！");
bool done = true;
while (done)
{
SetTextLine(LogCtl, "等待连接");
Socket client = s.Accept();
SetTextLine(LogCtl, "连接成功");
while (client.Connected)
{
try
{
byte[] b = new byte[1024];
int size = client.Receive(b);
string receivedstr = Encoding.Default.GetString(b);
receivedstr = receivedstr.Trim();
SetText(MsgCtl, receivedstr);
SetText(MsgCtl, Environment.NewLine);
}
catch (Exception ex)
{
SetTextLine(MsgCtl, ex.Message);
SetTextLine(LogCtl, "连接关闭");
client.Close();
}
}
}
}
delegate void SetTextEvent(Control ctl, string text);
void SetText(Control ctl, string text)
{
if (ctl.InvokeRequired)
ctl.Invoke(new SetTextEvent(SetText), new object[] { ctl, text });
else
ctl.Text += text;
}
void SetTextLine(Control ctl, string text)
{
if (ctl.InvokeRequired)
ctl.Invoke(new SetTextEvent(SetTextLine), new object[] { ctl, text });
else
ctl.Text = text + Environment.NewLine + ctl.Text;
}
在Receive后为什么要用
SetText(MsgCtl, receivedstr);
SetText(MsgCtl, Environment.NewLine);
进行换行并且无法ctl.Text
= text + Environment.NewLine + ctl.Text; 按照这种方式进行连接，真的很奇怪，在线程中也能够用委托读取出空间的内容，却根本无法连接。太奇怪了。上面的代码只能算是一种非常不爽的解决方案了。