multithreading ping application in c# windows form

Dear Experts,

How to Make Multithreading Ping Application in C# windows form.

my code is :

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.Threading.Tasks;

using System.Threading;

using System.Diagnostics;

using System.IO;

using System.Net;

namespace Ping

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

Thread th;

private void button1_Click(object sender, EventArgs e)

{

th = new Thread(thread1);

th.Start();

}

public void thread1()

{

try

{

string command = "/c ping " + textBox1.Text;

ProcessStartInfo procStartInfo = new ProcessStartInfo("CMD", command);

Process proc = new Process();

proc.StartInfo = proc.StartInfo;

proc.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;

proc.StartInfo.RedirectStandardOutput = true;

proc.StartInfo.RedirectStandardInput = true;

proc.StartInfo.RedirectStandardError = true;

proc.StartInfo.UseShellExecute = false;

proc.StartInfo.CreateNoWindow = true;

proc.OutputDataReceived += new DataReceivedEventHandler(proc_OutPutDataReceived);

proc.Start();

proc.BeginOutputReadLine();

proc.WaitForExit();

}

catch (Exception)

{

}

void proc_OutPutDataReceived(object sender, DataReceivedEventArgs e)

{

if (e.Data != null)

{

string newline = e.Data.Trim() + Environment.NewLine;

MethodInvoker append = () => richTextBox1.Text += newline;

richTextBox1.BeginInvoke(append);

}