/******************添加收到的消息******************/
public void AddMsg(string chatMsg)
{
Chatbox.SelectionAlignment = HorizontalAlignment.Left;
Font font = new Font(FontFamily.GenericMonospace, 10, FontStyle.Regular);
Chatbox.SelectionFont = font;
Chatbox.SelectionColor = Color.Blue;
string msg = System.DateTime.Now.ToLocalTime().ToString();
msg = msg + "\n" + ">>> " + chatMsg + "\n";
Chatbox.AppendText(msg);
Chatbox.ScrollToCaret();
}
/******************发送消息******************/
private void Sendbutton_Click(object sender, EventArgs e)
{
if (Sendchatbox.Text == "")
{
MessageBox.Show("请先填写消息");
}
else
{
try
{
//向服务器确认好友是否在线，得到IP
NetworkStream stream = toServer.GetStream();
string sendMsg = "q" + friendID;
byte[] sendByt = Encoding.ASCII.GetBytes(sendMsg);
stream.Write(sendByt, 0, sendByt.Length);
byte[] rcvByt = new byte[1024];
int rcvLength = stream.Read(rcvByt, 0, rcvByt.Length);
string rcvMsg = Encoding.ASCII.GetString(rcvByt, 0, rcvLength);
if (rcvMsg == "n")
{
MessageBox.Show("好友已离线");
}
else
{
//发送该消息
sendMsg = "msg" + userID + Sendchatbox.Text;
sendByt = Encoding.Unicode.GetBytes(sendMsg);
if (sendByt.Length > 1024)
{
MessageBox.Show("一次输入请不要超过500个字");
return;
}
else
{
TcpClient tcptoFriend = new TcpClient();
tcptoFriend.Connect(rcvMsg, listenPort);
NetworkStream streamtoFriend = tcptoFriend.GetStream();
streamtoFriend.Write(sendByt, 0, sendByt.Length);
streamtoFriend.Close();
tcptoFriend.Close();
//stream.Close(); 会报错
//向chatbox添加该消息
Chatbox.SelectionAlignment = HorizontalAlignment.Right;
Font font = new Font(FontFamily.GenericMonospace, 10, FontStyle.Regular);
Chatbox.SelectionFont = font;
Chatbox.SelectionColor = Color.Green;
string msg = System.DateTime.Now.ToLocalTime().ToString();
msg = msg + "\n" + ">>> " + Sendchatbox.Text + "\n";
Chatbox.AppendText(msg);
Chatbox.ScrollToCaret();
Sendchatbox.Clear();
Sendchatbox.Focus();
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}