原因：

//注意在工程上添加系统引用System.Drawing 否则System点不出Drawing来。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using DevComponents.DotNetBar;

namespace TaskBarFloatWnd
{
    public partial class Form1 : Office2007Form
    {
        public Form1()
        {
            InitializeComponent();
           
        }

      

        private void button1_Click(object sender, EventArgs e)
        {

            TaskBarWnd taskWnd = new TaskBarWnd();
            System.Drawing.Rectangle r = System.Windows.Forms.Screen.GetWorkingArea(taskWnd);
            taskWnd.Location = new System.Drawing.Point(r.Right - taskWnd.Width, r.Bottom - taskWnd.Height);
            taskWnd.Show();
        }
    }
}

 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Net.Sockets;
using System.Net;
using System.Threading;
using System.IO;

using System.Windows.Forms;

namespace SocketConnTimeOut
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void label2_Click(object sender, EventArgs e)
        {

        }
        string strIP = "";
        int strPort = 8000;
        int timeout = 1000;
        private void btnConn_Click(object sender, EventArgs e)
        {
            try
            {
                strIP = txtIP.Text;
                strPort = Convert.ToInt32(txtPort.Text);

                IPAddress localAddr = IPAddress.Parse(strIP);
                IPEndPoint remoteEndPoint = new IPEndPoint(localAddr, strPort);
                TcpClient NetworkClient = TimeOutSocket.Connect(remoteEndPoint, timeout);
            }
            catch (Exception ex)
            {
                MessageBox.Show("连接失败");
            }
        }
    }
}

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.NetworkInformation;

namespace PingIpAddress
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
      
        private void Form1_Load(object sender, EventArgs e)
        {
           
           
        }
        private Ping pingSender = new Ping();
        private string strIP = "";
        private void button1_Click(object sender, EventArgs e)
        {
            strIP = txtIP.Text;
            PingOptions pingOption = new PingOptions();
            pingOption.DontFragment = true;

            string data = "sendData:goodgoodgoodgoodgoodgood";
            byte[] buffer = Encoding.ASCII.GetBytes(data);
            int timeout = 120;
            PingReply reply = pingSender.Send(strIP, timeout, buffer);
            if (reply.Status == IPStatus.Success)
            {
                MessageBox.Show("能ping通 ");
            }
            else
            {
                MessageBox.Show("ping不通");
            }
        }
    }
}

     摘要:   private void MQRecieve()   //MQ接收函数        {            try     &nbs...  阅读全文

using System.Text.RegularExpressions;

首先：服务端要发四个字节过来，代表接下来他发了多少数据过来，然后每次客户端就读这个长度的数据即可。这样收发就同步了哈哈！
然后：客户端就按照这个长度来读服务端一次发过来的信息。


还要解决一个问题就是 socket接收信息由字节转换成整型：
 Byte[] RecNum = new byte[4];
                        int iRevNum = netstream.Read(RecNum, 0, RecNum.Length);//读取客户发送来的字节信息。
                        int i = BitConverter.ToInt32(RecNum, 0);
                        i = System.Net.IPAddress.NetworkToHostOrder(i);


接下来就按i这么大来读信息就能同步了。具体代码见下：（网元监控中使用）

private void Read()
        {
            try
            {
                Byte[] Recp = new byte[1024];
                if (ClientSocket == null)
                {
                    return;
                }
                NetworkStream netstream = new NetworkStream(ClientSocket);
                int iRevp = netstream.Read(Recp, 0, Recp.Length);//读取客户发送来的信息。
                string strRevp = System.Text.Encoding.GetEncoding("gb2312").GetString(Recp, 0, iRevp);
                if (strRevp.IndexOf("请输入指令") != -1)
                {
                    string sendMsg = "";
                    if (curPort.Equals("ALL"))
                    {
                        sendMsg = "track " + curNet.NeENName + "\r\n";
                    }
                    else
                    {
                        sendMsg = "track " + curNet.NeENName + "#" + curPort + "\r\n";
                    }
                    DispatchMessage(sendMsg);
                }
                while (true)
                {
                    try
                    {
                        Byte[] RecNum = new byte[4];
                        int iRevNum = netstream.Read(RecNum, 0, RecNum.Length);//读取客户发送来的字节信息。
                        int i = BitConverter.ToInt32(RecNum, 0);
                        i = System.Net.IPAddress.NetworkToHostOrder(i);
                        Byte[] Rec = new byte[i];
                        int iRev = netstream.Read(Rec, 0, Rec.Length);//读取客户发送来的信息。
                        string strRev = System.Text.Encoding.GetEncoding("gb2312").GetString(Rec, 0, iRev);
                        strRev = strRev.Replace("\0", "");
                        ProcessReceiveData(strRev);
                    }
                    catch (Exception ex)
                    {
                        ;
                    }
                    Thread.Sleep(1000);
                }
            }
            catch (Exception ex)
            {
                ;
            }
        }

跨线程时 一定要用System.Timer，而不要用System.windows.Forms.Timer.

Timer 控件到点时，一定要先stop然后做其他工作，最后再messageBox.show() ;否则messageBox.show() 将线程阻塞在那块等待用户操作了，要是用户不在没有操作，则不能stop()。

1：网线或者网络的事，比如IP被占用，网线不好用。

查找方法： ping一下网关。

2：接收数据中有"\0"，把后面数据截断了。

解决办法： string.replace("\0","")。