how to remove application from processes(task manager) ?

HI everyone...
when I close my application, it always stays with the active processes, each time I remove it from task manager, what do I do?

this is class listen

class Listener
    {
        
        public delegate void lbconnection(string lbconnection);
        public lbconnection lbc;
        Thread thdsHandler;
        public int lport;
        public string lpath;
        
        //Le constructeur de la class Listener
        public Listener(int port,string path,lbconnection lbcc)
        {
            lbc=lbcc;
            lport = port;
            lpath = path;
        }
        public TcpClient handlerSocket;
        public TcpListener tcpListener;
        public void listenerThread()
        {
            //la port d'coute initialisé a 0   
            //int port = 0;
            //la creation de la class tcplistener 
            tcpListener = new TcpListener(new IPEndPoint(IPAddress.Any, lport)); 
            //le debut de l'ecoute on utilisant la methode start
            tcpListener.Start();
            //boucle infini while
            while (true)
            {
                //la method acceptsocket accept chaque client arrivé 
                handlerSocket = tcpListener.AcceptTcpClient();
                if (handlerSocket.Connected)
                {
                    lbc("Connected To Localhost :" + lport + " connected.");
                    //lbConnections.Items.Add("Connected To Localhost :" + lport + " connected.");
                    //lock pour ivite le blocage des clients
                    lock (this)
                    {
                        //alSockets.Add(handlerSocket);
                        Request rqs = new Request(lpath, handlerSocket);
                        //creation d'une thread appeler thdstHandler
                        thdsHandler = new Thread(new ThreadStart(rqs.handlerThread));
                        //thdHandler = new Thread(thdsHandler);
                        //le debut de travail de thread thdstHandler,on utilisant la methode start
                        thdsHandler.Start();
                    }
                }
            }
        }
        //procedure killthread
        public void killthread()
        {
         thdsHandler.Abort();
        }
    }

and the request class

class Request
    {
        //public delegate void Desplaylist(string lv0, string lv1, string lv2, string lv3, string lv4);
        //Desplaylist ds;
        //int tcn = 0; int cc = 0; int sr = 0; int fr = 0; int mc = 0; int rs = 0;
        //public Thread thdHandler;
        //Listener lst;
        public string tbpath;
        public TcpClient tcpclient;
        public Request(string tbpath, TcpClient tcpclient)
        {
           this.tbpath = tbpath;
           this.tcpclient = tcpclient;  
        }
        

        public struct serverinfo
        {
            public string httpversion;
            public string Date;
            public string sinfo;
            public string AcceptRanges;
            public string ContentLength;
            public string Connection;
            public string ContentType;
        };

        // la procedure handleThread fait le traitement de requette arrivé de client 
        public void handlerThread()
        {
            //tcn++;
            //lbConnections.Items.Add("Server Started");
            byte[] clientData = new byte[1024];
            //initialisation d'une socket appele handlesocket 
            //Socket handlerSocket = (Socket)alSockets[alSockets.Count - 1];
            String filename = "";
            String[] verbs;
            NetworkStream ns = tcpclient.GetStream();
            ns.Read(clientData, 0, clientData.Length);
            //handleSocket.Receive(clientData);
            //maitre la requette recus dans un fichier text
            string stringdata = Encoding.ASCII.GetString(clientData);
            File.WriteAllText(tbpath + "\\Request.txt", stringdata);
            verbs = stringdata.Split(" ".ToCharArray());
            // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
            filename = verbs[1].Replace("/", "\\");
            if (filename.IndexOf("?") != -1)
            {
                // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
                filename = filename.Substring(0, filename.IndexOf("?"));
            }
            if (filename.EndsWith("\\"))
            {
                // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
                filename += "index.html";
            }
            filename = tbpath + filename;
            if (!File.Exists(filename))
            {
                //fr++;
                filename = tbpath + "\\Page Not Found.html";
            }
            //if (filename != "\\Page Not Found.html")
            //{
            //    sr++;
            //}
            //ds(Convert.ToString(tcn), Convert.ToString(cc), Convert.ToString(sr), Convert.ToString(fr), Convert.ToString(mc));
            //creation d'une nouvelle class filestream appele fs ouvrir ou cree le fichier ou lien filename
            FileStream fs = new FileStream(filename, FileMode.Open);
            //pointe sur le depart de string 
            fs.Seek(0, SeekOrigin.Begin);
            byte[] fileContents = new byte[fs.Length];
            //Maitre le contenu de (les bites) dans la variable filecontents
            fs.Read(fileContents, 0, (int)fs.Length);
            fs.Close();
            //envoy la reponce ou client on utilisons la methode Send 
            ns.Write(fileContents, 0, fileContents.Length);
            //handleSocket.Send(fileContents);
            serverinfo sinfo = new serverinfo();
            sinfo.httpversion = "HTTP/1.1 200 OK \r\n";
            sinfo.Date = "Dtae: ";
            sinfo.sinfo = "Server: HTTPServer/1 (Windows) HTTP/1.1 \r\n";
            sinfo.AcceptRanges = "Accept-Ranges: bytes \r\n";
            sinfo.ContentLength = "Content-Length: 1564 \r\n";
            sinfo.Connection = "Connection: Close \r\n";
            sinfo.ContentType = "Content-Type: text/html \r\n";
            string servinfo = sinfo.httpversion + sinfo.Date + DateTime.Now.Date + "," + DateTime.Now.Month + " " + DateTime.Now.Year + "  " + DateTime.Now.Hour + " " + DateTime.Now.Minute + " "
                + DateTime.Now.Second + "\r\n" + sinfo.sinfo + sinfo.AcceptRanges + sinfo.ContentLength + sinfo.Connection + sinfo.ContentType + "\r\n" + Encoding.ASCII.GetString(fileContents);
            File.WriteAllText("C:\\www\\Reponse.txt", servinfo);
            //lbConnections.Items.Add(filename);
            //arreté la socket
            ns.Close();
            //handleSocket.Close();
            //procedute killthread qui tue le Thread
            //lst.killthread();
        }
    }

and the click bouton

private void btnStart_Click(object sender, EventArgs e)
        {

            tbPort.ReadOnly = true;
            tbPath.ReadOnly = true;
            //la creation d'une list des socket
            int port = 0;
            port = Convert.ToInt16(tbPort.Text);
            string path = tbPath.Text;
            //alSockets = new ArrayList();
            Listener lst = new Listener(port, path, this.lbconnect);
            //creation d'une thread appeler thdlistener
            thdListener = new Thread(new ThreadStart(lst.listenerThread));
            //le debut de travail de thread...on utilisant la methode start
            thdListener.Start();

            ////////////////////////////////
            btnStart.Enabled = false;
            Resume.Enabled = false;
            Suspend.Enabled = true;
            Stop.Enabled = true;
        }

this is my work and i need to explain me the wrong ...

Tags: C#