在做网络通讯方面的程序时，必不可少的是Socket通讯。

那么我们需要有一套既定的，简易的通讯流程。

如下：

public class PublicSocket    {        public const string DOWNLOAD_STATUS_WAIT = "1";        public const string DOWNLOAD_STATUS_PAUSE = "2";        public const string DOWNLOAD_STATUS_DOWNLOADING = "3";        public const string DOWNLOAD_STATUS_DOWNLOADED = "4";        public const string DOWNLOAD_STATUS_ERROR = "5";        //private XmlHelper xmlhelper = new XmlHelper();        private TcpClient tcpMethod = new TcpClient();        public static string LoginUserName = "";        public static Socket HeadClient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);        private static string iAddress = "192.168.1.1";        private static int iPort = 7888;        private static IPEndPoint endpoint = new IPEndPoint(IPAddress.Parse(iAddress), iPort);        public const int LOGIN_NAMEERROR = 100000;        public const int LOGIN_CODEERROR = 100001;        public const int LOGIN_ERROR = 100002;        public const int LOGIN_OK = 100003;        public static bool AllowUpdate = true;                public static void SocketConnect()        {            try            {                if (!HeadClient.Connected)                {                    HeadClient.Connect(endpoint);                }            }            catch (Exception ex)            { }        }        public static void SocketClose()        {            if (HeadClient.Connected)            {                HeadClient.Close();            }        }public static void ThreadGetSingleDownloadedFile(object data)   //object参数可以实现界面传入数据进行使用        {            string retMD5 = string.Empty;            try            {                HanleListItemClass formInter = data as HanleListItemClass;                XmlDocument aa = XmlHelper.BuildXmlDoc("CMD", "1", "1",                 new List
      
        { new HollXmlNode("ID","2",null),                                        new HollXmlNode("STATE","127",null) });                //主要为了构建XML文件进行Socket的send操作                //构造后如下  
       
       
                        //                 
        
         2
                         //                
        
         127
        
                       byte[] sendaskbyte = Encoding.UTF8.GetBytes(aa.InnerXml.ToString());                int sendcount = 0;                try                {                    sendcount = HeadClient.Send(sendaskbyte, sendaskbyte.Length, 0);                }                catch (Exception ex)                {                    // return LOGIN_ERROR;                }                if (sendcount == 0)                {                    //return LOGIN_ERROR;                }                int ret = SingleDownloadedFileWaitBack(formInter);            }            catch            {                //return LOGIN_ERROR;            }        }        public static int SingleDownloadedFileWaitBack(HanleListItemClass tItemclass)        {            byte[] RetData = new byte[36 * 1024];            Array.Clear(RetData, 0, RetData.Length);            int datalen = 0;            try            {                datalen = HeadClient.Receive(RetData);                if (datalen == 0)                {                    return -1;                }                //接收到服务器返回的信息                string tcpdatastring = Encoding.UTF8.GetString(RetData).Replace("\0", " "); ;                //此处可以根据自己需求处理返回的信息 http://www.cnblogs.com/sosoft/                               return 0;            }            catch (Exception ex)            {                return 0;            }        }    }
      

 

 然后再界面调用的时候，我们只需要在事件中这么使用即可

 

private void button1_Click(object sender, EventArgs e)       {  PublicSocket.SocketConnect();               ThreadPool.QueueUserWorkItem(new WaitCallback(SocketMethod.ThreadGetTotalState), this);       }

 

同时也把构建XML的类分享出来，使得编码更加简便

 

1 public class XmlHelper 2     { 3         private static string xmlinit = "
     <{0} code='{1}'  index='{2}'>
     "; 4  5         public static XmlDocument BuildXmlDoc(string xmltype, string code, string index, List
     
       xmlnodes) 6         { 7             XmlDocument root = new XmlDocument(); 8             root.LoadXml(string.Format(xmlinit, xmltype, code, index)); 9 10             if (xmlnodes != null)11             {12                 for (int i = 0; i < xmlnodes.Count; i++)13                 {14                     XmlElement parentNode = root.CreateElement(xmlnodes[i].NodeName);15 16                     XmlText descText = root.CreateTextNode(xmlnodes[i].NodeValue);17                     parentNode.AppendChild(descText);18 19 20                     if (xmlnodes[i].NodeAtt != null)21                     {22                         if (xmlnodes[i].NodeAtt.Count > 0)23                         {24                             for (int j = 0; j < xmlnodes[i].NodeAtt.Count; j++)25                             {26                                 parentNode.SetAttribute(xmlnodes[i].NodeAtt[j].AttName, xmlnodes[i].NodeAtt[j].AttValue);27                             }28                         }29                     }30 31                     root.LastChild.AppendChild(parentNode);32                 }33             }34 35 36             return root;37         }38 39 40     }
     

 

 

1 public class HollXmlNode 2     { 3         private string _nodename; 4         private string _nodevalue; 5         private List
     
       _nodeatt; 6  7  8         public HollXmlNode(string tnodename, string tnodevalue, List
      
        tnodeatt) 9         {10             _nodename = tnodename;11             _nodevalue = tnodevalue;12             _nodeatt = tnodeatt;13         }14 15 16         public string NodeName17         {18             get { return _nodename; }19             set { _nodename = value; }20         }21 22 23 24 25         public string NodeValue26         {27             get { return _nodevalue; }28             set { _nodevalue = value; }29         }30 31 32         public List
       
         NodeAtt33         {34             get { return _nodeatt; }35             set { _nodeatt = value; }36         }37     }38 39 40     public class HollXmlAttribute41     {42         private string _attname;43         private string _attvalue;44 45 46         public HollXmlAttribute(string tname, string tvalue)47         {48             _attname = tname;49             _attvalue = tvalue;50         }51 52 53         public string AttName54         {55             get { return _attname; }56             set { _attname = value; }57         }58 59 60         public string AttValue61         {62             get { return _attvalue; }63             set { _attvalue = value; }64         }65     }