delgate to update listbox in form

[bahaa]

hii

i have a list box in form and i want to update list from listuser in dll , i can't used any event because i want to update list autumatlically after every user connected (chat).

the code after user connect

           //t = new Thread(AcceptClients);
            //t.Start(); 
        }

        //private void AcceptClients()
        //{
        //    while (true)
        //    {
        //        msguser user = new msguser(string.Empty);
        //        //create new socket
        //        TcpClient client = listener.AcceptTcpClient();
        //        n = client.GetStream();
        //        arr.Add(n);

        //        Thread t = new Thread(getuser);
        //        t.Start(n);
        //    }
        //}

        //private void getuser(object obj)
        //{
        //    BinaryFormatter b = new BinaryFormatter();
        //    msguser username = new msguser("");
        //    username.Usrname = b.Deserialize((NetworkStream)obj).ToString();
        //    lusername.Add(username.Usrname);


        //    foreach (NetworkStream item in arr)
        //    {
        //        b.Serialize(item, username);
        //    }
        //}

[tlhintoq]

TIP: When you are writing your question, there is a button on the tool bar that wraps the [code] tags around your copy/pasted code. It helps a bunch. Its the button with a '#' on it. More on tags. They're cool. Check'em out.


Do you understand that the code you supplied never runs? It is all commented out.

i have a list box in form and i want to update list from listuser in dll

Nobody here is going to know anything about your dll that you wrote.

[bahaa]

the DLL code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.Serialization.Formatters.Binary;
using System.Net;
using System.Net.Sockets;
using System.Threading;

namespace setgetmessage
{
    [Serializable]
    public class msguser
    {
        public string data;
        private string usrname;

        public string Usrname
        {
            get { return usrname; }
            set { usrname = value; }
        }
        public msguser(string msg)
        {
            data = msg;
        }

    }
}

this code in form

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net.Sockets;
using System.Net;
using System.Threading;
using setgetmessage;
using System.Collections;
using System.Runtime.Serialization.Formatters.Binary;
using System.IO;

namespace server
{
    delegate void pleasework(TcpListener listener);
    public partial class formserver : Form
    {
        public formserver()
        {
            InitializeComponent();
        }

        Thread t;
        static List<NetworkStream> arr = new List<NetworkStream>();
        static List<string> lusername = new List<string>();
        static TcpListener listener;
        static NetworkStream n;
        private void btnconnect_Click(object sender, EventArgs e)
        {

            btnconnect.Visible = false;

            listener = new TcpListener(IPAddress.Parse(masktbip.Text), (int) numericport.Value);
            listener.Start();


            t = new Thread(AcceptClients);
            t.Start();
        }

        private void AcceptClients()
        {
            while (true)
            {
                msguser user = new msguser(string.Empty);
                //create new socket
                TcpClient client = listener.AcceptTcpClient();
                n = client.GetStream();
                arr.Add(n);

                Thread t = new Thread(getuser);
                t.Start(n);
            }
        }

        private void getuser(object obj)
        {
            BinaryFormatter b = new BinaryFormatter();
            msguser username = new msguser("");
            username.Usrname = b.Deserialize((NetworkStream)obj).ToString();
            lusername.Add(username.Usrname);
            listBox1.Items.Add(username.Usrname);//ERROR

            foreach (NetworkStream item in arr)
            {
                b.Serialize(item, username);
            }
        }

          private void btndiconnect_Click(object sender, EventArgs e)
        {

            Application.Exit();
        }


    }

}

thanks

[tlhintoq]

You've been told once politely.
Let me tell you a second time: Put in [code] tags around your code snippets. Making others do it for you is just lazy and will make others not want to help you.

[tlhintoq]

i have a list box in form and i want to update list from listuser in dll , i can't used any event because i want to update list autumatlically after every user connected (chat).

Take a look at your own DLL. There is no listuser in your DLL.

Am I correct in thinking that you have two pieces of code that you didn't write (got someplace on the web or handed to you by someone else) and you don't understand either piece, but you want someone to tie them together for you?


Generic answer #4:

I have xxx, then do yyy then zzz happens. Here's my code ...

Ok. You know what you have.
What you don't have is a question. Nobody here knows why you posted this since you haven't asked anything. What is it you are looking for?
I recommend you read the FAQ about How to ask a good question so the volunteers will be able to help you.