C#代码求改错

Question

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net.Sockets;
using System.Net;
using System.Reflection;
using System.Diagnostics;
using System.Text.RegularExpressions;
using System.Threading;namespace Server2
{    public partial class Server : Form
    {        private Socket socket;
        private IPAddress myIP;
        private IPEndPoint endPoint;
        private int point;
        private Socket clientSocket;
        private Assembly ass = null;
        // private System.IO.Stream stream = null;
        // private System.Media.SoundPlayer pl;
        private string txt;
        private byte[] cbs = new byte[512];
        private byte[] sbs = new byte[512];
        public Thread ThRec;
        public Thread th1;
        public Thread onFocus;
        public int send;
        public string recString;        public void frmServer()
        {
            InitializeComponent();
            ass = Assembly.GetExecutingAssembly();
            //stream = ass.GetManifestResourceStream("msgServer.msg.wav");
            // pl = new System.Media.SoundPlayer(stream);
        }        public void setItOnFocus()//发送窗口 获取焦点
        {
            rtxtSend.Focus();
        }        public Server()
        {
            InitializeComponent();
        }        private void Form1_Load(object sender, EventArgs e)//加载事件
        {
            Control.CheckForIllegalCrossThreadCalls = false;
            cobSelectSend.SelectedIndex = 0;
            GetHostIp();
        }        private void GetHostIp()//获取本机IP
        {
            string strHostName = Dns.GetHostName(); //得到本机的主机名
            IPHostEntry ipEntry = Dns.GetHostEntry(strHostName); //取得本机IP
            foreach (System.Net.IPAddress ip in ipEntry.AddressList)
            {
                txtIP.Text = ip.ToString();
                myIP = IPAddress.Parse(txtIP.Text.Trim());
            }
        }        private void btnFont_Click(object sender, EventArgs e)//字体按钮
        {
            ChooseFont();        }        private void ChooseFont()        //字体选择
        {
            FontDialog font = new FontDialog();
            font.ShowEffects = true;
            font.ShowColor = true;
            font.MinSize = 12;
            font.Font = new Font("楷体_GB2312", 18, FontStyle.Bold);
            font.Color = Color.Blue;            if (font.ShowDialog() == DialogResult.OK)
            {
                rtxtSend.Font = font.Font;
                rtxtSend.ForeColor = font.Color;
            }
        }        private void btnStart_Click(object sender, EventArgs e)//启动服务器按钮
        {
            th1 = new System.Threading.Thread(ToConnect);
            th1.Start();
        }        private void ToConnect()//启动服务
        {
            try
            {
                //myIP = IPAddress.Parse(txtIP.Text.Trim());
                point = Convert.ToInt32(txtPoint.Text.Trim());//Point
                endPoint = new IPEndPoint(myIP, point); //终端                socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                socket.Bind(endPoint);//绑定
                socket.Listen(3);     //最多3人同时连接
                lblStatus.Text = "服务器已经运行，等待连接...";                clientSocket = socket.Accept();//等待接受
                //连接上时
                if (clientSocket.Connected)
                {
                    lblStatus.Text = "已经建立连接.";                    ThRec = new Thread(new ThreadStart(rec));
                    ThRec.Start();
                    ThRec.Abort();
                }
            }
            catch (SocketException)
            {
                //txtIP.Focus(); txtIP.SelectAll();
                MessageBox.Show("IP或者端口错误！");
            }
            catch (Exception e)
            {
                MessageBox.Show("Connect的Exception:" + e.ToString());
            }
        }        private void btnStop_Click(object sender, EventArgs e)//停止监听
        {
            stopSoket();
        }        private void btnSend_Click(object sender, EventArgs e)//发送消息
        {
            if (rtxtSend.Text.Trim() == "")
                return;
            else if (rtxtSend.Text.Trim().ToLower() == "clear()")
            {
                rtxtMsg.Clear();
                rtxtSend.Text = "";
                return;
            }
            else if (Regex.IsMatch(rtxtSend.Text.Trim().ToLower(), @"^[zoom(]+[\d]+[)]$"))
            {
                string str = rtxtSend.Text.ToLower();
                int size = Convert.ToInt32(str.Substring(str.LastIndexOf('(') + 1,
                    str.IndexOf(')') - str.LastIndexOf('(') - 1));
                rtxtMsg.Font = new Font("宋体", size, FontStyle.Bold);
                return;
            }
            else if (Regex.IsMatch(rtxtSend.Text.Trim().ToLower(), @"^[down(]+[\d]+[)]$"))
            {
                string str = rtxtSend.Text.ToLower();
                string size = str.Substring(str.LastIndexOf('(') + 1, str.IndexOf(')') - str.LastIndexOf('(') - 1);                if (Convert.ToInt32(size) > rtxtMsg.Text.Length)
                    return;            }
            else if (Regex.IsMatch(rtxtSend.Text.Trim().ToLower(), @"^[up(]+[\d]+[)]$"))
            {
                string str = rtxtSend.Text.ToLower();
                string size = str.Substring(str.LastIndexOf('(') + 1, str.IndexOf(')') - str.LastIndexOf('(') - 1);            }
            else if (rtxtSend.Text.Trim().ToLower() == "exit(0)")
            {
                this.Close();
                return;
            }            try
            {
                byte[] sbs = new byte[512];
                string user = null;
                if (txtUser.Text.Trim() == "在此输入你的名字" || txtUser.Text.Trim() == "")
                {
                    sbs = null;
                    user = "我";
                    sbs = Encoding.Unicode.GetBytes(string.Format("对方  {0}\n{1}\n", DateTime.Now.ToString(), rtxtSend.Text.Trim()));
                }
                else
                {
                    sbs = null;
                    sbs = Encoding.Unicode.GetBytes(string.Format("{0}  {1}\n{2}\n", txtUser.Text.Trim(), DateTime.Now.ToString(), rtxtSend.Text.Trim()));
                    user = txtUser.Text.Trim();
                }                clientSocket.Send(sbs, sbs.Length, 0);//发送套接字                txt = string.Format("{0}  {1}\n{2}\n", user, DateTime.Now.ToString(), rtxtSend.Text.Trim());//显示自己说的话
                int tempLen = rtxtMsg.Text.Length;
                rtxtMsg.AppendText(txt);
                rtxtMsg.Select(tempLen, txt.Length);
                rtxtMsg.SelectionFont = new Font("宋体", 10);
                rtxtMsg.SelectionColor = Color.Green;
                rtxtSend.Clear();
            }
            catch { MessageBox.Show("未建立连接，无法发送数据!"); }
        }        private void frmServer_FormClosing(object sender, FormClosingEventArgs e)//关闭窗体、进程
        {
            exitApp();
        }        private void frmServer_Load(object sender, EventArgs e)//加载事件，检测进程是否重复启动
        {
            checkAppStart();
            topWinform.Checked = true;
        }        public void checkAppStart()//检查进程是否重复启动方法
        {
            foreach (Process p in Process.GetProcesses())
            {
                if (p.ProcessName == Application.ProductName)//已经启动
                {
                    if (p.Id != Process.GetCurrentProcess().Id)//不是当前进程
                    {
                        p.Kill();
                    }
                }
            }
        }

Answer 1

接上，        private void checkBox1_CheckedChanged(object sender, EventArgs e)//窗口置顶
        {
            this.TopMost = topWinform.Checked;
        }        public void rec()//接收数据 方法
        {
            try
            {
                while (true)
                {
                    clientSocket.Receive(cbs, cbs.Length, 0);
                    recString = System.Text.Encoding.Unicode.GetString(cbs);
                    int tempLength = rtxtMsg.Text.Length;
                    rtxtMsg.Select(tempLength, recString.Length);
                    rtxtMsg.SelectionFont = new Font("宋体", 10);
                    rtxtMsg.SelectionColor = Color.Blue;
                    rtxtMsg.AppendText(recString);
                    Thread.Sleep(200);
                }                //pl.Play();
            }
            catch (SocketException)
            {
                //lblStatus.Text = "对不起，连接已经断开！";
                stopSoket();
            }
        }        public void stopSoket()//停止soket
        {
            try
            {
                socket.Close();
                lblStatus.Text = "监听已经停止.";
            }
            catch
            {
                lblStatus.Text = "目前未建立连接.";
            }
        }        private void Server_FormClosing(object sender, FormClosingEventArgs e)//FormClosing事件
        {
            exitApp();
        }        public void exitApp()//关闭进程
        {
            try
            {
                socket.Close(3);
            }
            catch (Exception) { }
            finally
            {
                foreach (Process p in Process.GetProcesses())
                {
                    if (p.ProcessName == Application.ProductName)
                        p.Kill();
                }
            }
        }        private void rtxtSend_KeyDown(object sender, KeyEventArgs e)//发送
        {
            selectSend(sender, e);
        }        private void selectSend(object sender, KeyEventArgs e)//判断cobSelectSend的值然后再选择调哪个发送方法
        {
            if (send == 0)
            {
                SendByEnter(sender, e);
            }
            else if (send == 1)
            {
                SendByAltAndEnter(sender, e);
            }
            else
            {
                MessageBox.Show("选择发送按钮错误，请重启程序！");
            }
        }        private void SendByEnter(object sender, KeyEventArgs e)//用Enter键消息
        {
            if ((e.KeyData & Keys.Control) == Keys.Control &&
              (e.KeyData & Keys.Enter) == Keys.Enter)
            {
                rtxtSend.AppendText("\n");
                e.Handled = true;            }
            else if (e.KeyData == Keys.Enter)
            {
                //代码
                e.Handled = true;
                btnSend_Click(sender, e);
            }
        }        private void SendByAltAndEnter(object sender, KeyEventArgs e)//用Alt+Enter键发送消息
        {
            if ((e.KeyData & Keys.Control) == Keys.Control &&
(e.KeyData & Keys.Enter) == Keys.Enter)
            {
                rtxtSend.AppendText("\n");
                e.Handled = true;
                btnSend_Click(sender, e);
            }
            else if (e.KeyData == Keys.Enter)
            {
                //代码
                e.Handled = true;            }
        }        private void cleanScreen_Click(object sender, EventArgs e)//接收窗口 清屏
        {
            rtxtMsg.Clear();
        }        private void copy_Click(object sender, EventArgs e)//接收窗口 复制
        {
            this.rtxtMsg.Copy();
        }        private void selectAll_Click(object sender, EventArgs e)//接收窗口 全选
        {
            this.rtxtMsg.SelectAll();
        }        private void copy2_Click(object sender, EventArgs e)//发送窗口 复制
        {
            rtxtSend.Copy();
        }        private void paste2_Click(object sender, EventArgs e)//发送窗口 粘贴
        {
            rtxtSend.Paste();
        }        private void cut_Click(object sender, EventArgs e)//发送窗口 剪切
        {
            rtxtSend.Cut();
        }        private void 全选ToolStripMenuItem_Click(object sender, EventArgs e)//发送窗口 全选
        {
            this.rtxtSend.SelectAll();
        }        private void cobSelectSend_SelectedIndexChanged(object sender, EventArgs e)//选择用Enter或Alt+Enter键发送
        {
            if (cobSelectSend.SelectedIndex == 0)
            {
                send = 0;
            }
            else
            {
                send = 1;
            }
        }    }
}

Answer 2

先说下，是客户端与服务端通信的代码，前面发的是服务端，下面发客户端。
具体错误描述是：
//-----1-----//启动客户端后，客户端就死了。
//-----2-----//接收的数据偶尔会重复附加上一条或多条的数据。using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.Diagnostics;
using System.Text.RegularExpressions;
using System.Threading;namespace Client2
{
    public partial class Client : Form
    {
        private IPAddress IP;//ip
        private EndPoint endpoint;//point
        private Socket socket;//socket
        //private System.IO.Stream stream = null;
        private System.Reflection.Assembly ass = null;
        // private System.Media.SoundPlayer pl = null;
        private string txt;
        private byte[] cbs = new byte[512];
        private byte[] sbs = new byte[512];
        public int send;
        public string recString;        public Client()
        {
            InitializeComponent();
            ass = System.Reflection.Assembly.GetExecutingAssembly();
            //  stream = ass.GetManifestResourceStream("smgClient.msg.wav");
            //    pl = new System.Media.SoundPlayer(stream);
        }
        private void ToConnect()//连接服务器
        {
            try
            {
                IP = IPAddress.Parse(txtIP.Text.Trim());
                int point = Convert.ToInt32(txtPoint.Text.Trim());
                endpoint = new IPEndPoint(IP, point);
                //建立Socket
                socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                //建立连接                socket.Connect(endpoint);
                //连接成功
                lblStatus.Text = "连接成功!";                while (true)
                {
                    try
                    {
                        Thread ThRecMsg = new Thread(new ThreadStart(recMsg));
                        ThRecMsg.Start();
                        ThRecMsg.Join();                    }
                    catch (ThreadStartException ex)
                    {
                        MessageBox.Show(ex.ToString());
                    }
                }
            }
            catch (FormatException)
            { MessageBox.Show("IP error OR Point error"); }
            catch (ArgumentNullException)
            { MessageBox.Show("IP error OR Point error"); }
            catch (SocketException)
            {
                lblStatus.Text = "连接失败，原因: 服务器已停止.";
            }
        }        private void btnFont_Click(object sender, EventArgs e) //字体
        {
            FontDialog font = new FontDialog();
            font.ShowEffects = true;
            font.ShowColor = true;
            font.MinSize = 12;
            font.Font = new Font("楷体_GB2312", 18, FontStyle.Bold);
            font.Color = Color.Blue;            if (font.ShowDialog() == DialogResult.OK)
            {
                rtxtSend.Font = font.Font;
                rtxtSend.ForeColor = font.Color;
            }
        }        private void frmClient_FormClosing(object sender, FormClosingEventArgs e)//窗体关闭
        {
            CloseForm();
        }        private void CloseForm()//进程关闭判断
        {
            try
            {
                socket.Close();
            }
            catch (Exception) { }
            finally
            {
                foreach (Process p in Process.GetProcesses())
                {
                    if (p.ProcessName == Application.ProductName)
                        p.Kill();
                }
            }
        }        private void checkBox1_CheckedChanged(object sender, EventArgs e)//置顶
        {
            this.TopMost = checkBox1.Checked;
        }        private void Form1_Load(object sender, EventArgs e)//判断系统进程唯一性
        {            Control.CheckForIllegalCrossThreadCalls = false;
            txtUser.Focus();
            cobSelectSend.SelectedIndex = 0;
            string strHostName = Dns.GetHostName(); //得到本机的主机名
            IPHostEntry ipEntry = Dns.GetHostEntry(strHostName); //取得本机IP
            foreach (System.Net.IPAddress ip in ipEntry.AddressList)
            {
                txtIP.Text = ip.ToString();
                IP = IPAddress.Parse(txtIP.Text.Trim());
            }            OpenNewToReplaceProcess();
        }        private static void OpenNewToReplaceProcess()//进程唯一性判断
        {
            foreach (Process p in Process.GetProcesses())
            {
                if (p.ProcessName == Application.ProductName)//有进程
                {
                    if (p.Id != Process.GetCurrentProcess().Id)//不是当前进程
                    {
                        p.Kill();
                    }
                }
            }
        }        private void button1_Click(object sender, EventArgs e)//连接按钮
        {
            try
            {
                ToConnect();
            }
            catch (Exception e2)
            {                rtxtMsg.Text = "[" + e2.ToString() + "]";
            }        }        private void btnSend_Click_1(object sender, EventArgs e)//发送消息按钮
        {
            if (rtxtSend.Text.Trim() == "")
                return;
            else if (rtxtSend.Text.Trim().ToLower() == "clear()")
            {
                rtxtMsg.Clear();
                rtxtSend.Text = "";
                return;
            }
            else if (Regex.IsMatch(rtxtSend.Text.Trim().ToLower(), @"^[zoom(]+[\d]+[)]$"))
            {
                string str = rtxtSend.Text.ToLower();
                int size = Convert.ToInt32(str.Substring(str.LastIndexOf('(') + 1,
                    str.IndexOf(')') - str.LastIndexOf('(') - 1));
                rtxtMsg.Font = new Font("宋体", size, FontStyle.Bold);
                return;
            }
            else if (Regex.IsMatch(rtxtSend.Text.Trim().ToLower(), @"^[down(]+[\d]+[)]$"))
            {
                string str = rtxtSend.Text.ToLower();
                string size = str.Substring(str.LastIndexOf('(') + 1, str.IndexOf(')') - str.LastIndexOf('(') - 1);                if (Convert.ToInt32(size) > rtxtMsg.Text.Length)
                    return;            }
            else if (Regex.IsMatch(rtxtSend.Text.Trim().ToLower(), @"^[up(]+[\d]+[)]$"))
            {
                string str = rtxtSend.Text.ToLower();
                string size = str.Substring(str.LastIndexOf('(') + 1, str.IndexOf(')') - str.LastIndexOf('(') - 1);            }
            else if (rtxtSend.Text.Trim().ToLower() == "exit(0)")
            {
                this.Close();
                return;
            }            try
            {
                byte[] cbs = new byte[512];
                string user = null;
                if (txtUser.Text.Trim() == "在此输入你的名字" || txtUser.Text.Trim() == "")
                {
                    cbs = null;
                    user = "我";
                    Encoding.Unicode.GetBytes(rtxtSend.Text.Trim());
                    cbs = Encoding.Unicode.GetBytes(string.Format("对方 {0}\n{1}\n", DateTime.Now.ToString(), rtxtSend.Text.Trim()));
                }
                else
                {
                    cbs = null;
                    cbs = Encoding.Unicode.GetBytes(string.Format("{0}  {1}\n{2}\n", txtUser.Text.Trim(), DateTime.Now.ToString(), rtxtSend.Text.Trim()));
                    user = txtUser.Text.Trim();
                }                socket.Send(cbs, cbs.Length, 0);//发送套接字
                txt = string.Format("{0} {1}\n{2}\n", user, DateTime.Now.ToString(), rtxtSend.Text.Trim());//自己说的话
                int tempLen = rtxtMsg.Text.Length;
                rtxtMsg.AppendText(txt);//显示 自己说的话
                rtxtMsg.Select(tempLen, txt.Length);
                rtxtMsg.SelectionFont = new Font("宋体", 10);
                rtxtMsg.SelectionColor = Color.Green;
                rtxtSend.Clear();
            }
            catch (Exception ex)
            {
                MessageBox.Show("连接尚未建立！无法发送数据!" + ex.Message);
                closeConnect();
            }
        }

Answer 3

接上！
private void btnCloseConnect_Click_1(object sender, EventArgs e)//关闭连接按钮
        {
            closeConnect();
        }        public void closeConnect()//关闭连接方法
        {
            try
            {
                socket.Close();
                lblStatus.Text = "连接已经关闭.";
            }
            catch
            {
                lblStatus.Text = "目前未建立连接.";
            }
        }        public void recMsg()//接收数据 方法
        {            try
            {
                socket.Receive(sbs, sbs.Length, 0);
                recString = System.Text.Encoding.Unicode.GetString(sbs);
                int tempLength = rtxtMsg.Text.Length;
                rtxtMsg.Select(tempLength, recString.Length);
                rtxtMsg.SelectionFont = new Font("宋体", 10);
                rtxtMsg.SelectionColor = Color.Blue;
                rtxtMsg.AppendText(recString);
                Thread.Sleep(200);            }
            catch (SocketException)
            {
                MessageBox.Show("对不起，服务器已经关闭！");
                //Client.ActiveForm.Close();
            }            //     pl.Play();
        }        private void checkBox1_CheckedChanged_1(object sender, EventArgs e)//窗口置顶？
        {
            this.TopMost = checkBox1.Checked;
        }        private void rtxtSend_KeyDown(object sender, KeyEventArgs e)//发送
        {
            SendMessage(sender, e);        }        private void SendMessage(object sender, KeyEventArgs e)//选择发送按键 调用
        {
            if (send == 0)
            {
                SendByEnter(sender, e);
            }
            else if (send == 1)
            {
                SendByAltAndEnter(sender, e);
            }
            else
            {
                MessageBox.Show("选择发送消息错误，请重启程序");
                OpenNewToReplaceProcess();
            }
        }        private void SendByEnter(object sender, KeyEventArgs e)//用Enter键发送
        {
            if ((e.KeyData & Keys.Control) == Keys.Control &&
              (e.KeyData & Keys.Enter) == Keys.Enter)
            {
                rtxtSend.AppendText("\n");
                e.Handled = true;            }
            else if (e.KeyData == Keys.Enter)
            {
                //代码
                e.Handled = true;
                btnSend_Click_1(sender, e);
            }
        }        private void SendByAltAndEnter(object sender, KeyEventArgs e)//用Alt+Enter键发送
        {
            if ((e.KeyData & Keys.Control) == Keys.Control &&
  (e.KeyData & Keys.Enter) == Keys.Enter)
            {
                rtxtSend.AppendText("\n");
                e.Handled = true;
                btnSend_Click_1(sender, e);
            }
            else if (e.KeyData == Keys.Enter)
            {
                //代码
                e.Handled = true;            }
        }        private void clean_Click(object sender, EventArgs e)//接收  清屏
        {
            this.rtxtMsg.Clear();
        }        private void copy_Click(object sender, EventArgs e)//接收  复制
        {
            this.rtxtMsg.Copy();
        }        private void selectAll_Click_1(object sender, EventArgs e)//接收  全选
        {
            this.rtxtMsg.SelectAll();
        }        private void copy2_Click(object sender, EventArgs e)//发送  复制
        {
            this.rtxtSend.Copy();
        }        private void cut2_Click(object sender, EventArgs e)//发送  剪切
        {
            this.rtxtSend.Cut();
        }        private void paste_Click(object sender, EventArgs e)//发送   粘贴
        {
            this.rtxtSend.Paste();
        }        private void selectAll_Click(object sender, EventArgs e)//发送  全选
        {
            this.rtxtSend.SelectAll();
        }        private void cobSelectSend_SelectedIndexChanged(object sender, EventArgs e)//判断哪个键发送
        {
            if (cobSelectSend.SelectedIndex == 0)
            {
                send = 0;
            }
            else
            {
                send = 1;
            }
        }        private void timer1_Tick(object sender, EventArgs e)
        {
            recMsg();
        }
        private void txtUser_MouseClick(object sender, MouseEventArgs e)
        {
            this.txtUser.Focus();
            this.txtUser.Text = "";
        }        private void button2_Click(object sender, EventArgs e)//接收按钮
        {        }    }
}