How to implement thread for individual button

I want to create a C# GUI application that will start a new console
application, e.g. console.exe when clicking a button. Then, if click a
button, it will kill a specific console application.

Am I right that I need to create a new thread when clicking a "Start Button"
for starting a console application.

And, a separating thread of "Stop Button" is used to stop a specific console
application?? I tried to do the following, button the MessageBox inside
Button2 (Stop Button) didn't display. I'm afraid that since the following is
a single thread GUI application.

How to change the following to adapt to my design?
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace TestOutboundMain
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Button button1;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;

private int processID;
private System.Windows.Forms.Button button2;
System.Diagnostics.Process p;

public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();

//
// TODO: Add any constructor code after InitializeComponent call
//
}

/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}

#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// button1
//
this.button1.Location = new System.Drawing.Point(104, 88);
this.button1.Name = "button1";
this.button1.TabIndex = 0;
this.button1.Text = "button1";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(104, 136);
this.button2.Name = "button2";
this.button2.TabIndex = 1;
this.button2.Text = "button2";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(280, 181);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.button2,
this.button1});
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);

}
#endregion

/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}

private void button1_Click(object sender, System.EventArgs e)
{
p = new System.Diagnostics.Process();

p.StartInfo.RedirectStandardOutput=false;

p.StartInfo.FileName =
@"C:\test\outboundmain\TestOutboundMainConsole.exe ";

p.StartInfo.UseShellExecute=true;
p.Start();
processID = p.Id;
p.WaitForExit();
MessageBox.Show("exit!!");
p.Dispose();
}

private void button2_Click(object sender, System.EventArgs e)
{
MessageBox.Show("Start to kill the process");
p.Close();
MessageBox.Show("Try to close the process");
p.Dispose();
MessageBox.Show("Try to dispose the process");
p.Kill();
MessageBox.Show("Try to kill the process");

}
}
}