Prograssbar in Threding

using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using System.Windows.Forms;

using System.Data;

using System.Threading;

namespace ExtractMessageWrapper

public delegate void DelegateThreadStart();

public delegate void DelegateThreadFinished();

public delegate void DelegateThreadMessage(int val);

public class Form1 : System.Windows.Forms.Form

private System.Windows.Forms.Button button1;

private System.Windows.Forms.ProgressBar progressBar1;

///

private System.ComponentModel.Container components = null;

public DelegateThreadStart m_DelegateThreadStart;

public DelegateThreadFinished m_DelegateThreadFinished;

public DelegateThreadMessage m_DelegateThreadMessage;

public Form1()

//

// Required for Windows Form Designer support

//

m_DelegateThreadStart = new DelegateThreadStart(this.ThreadStart);

m_DelegateThreadFinished = new DelegateThreadFinished(this.ThreadFinished);

m_DelegateThreadMessage = new DelegateThreadMessage(this.ThreadIncrement);

///

protected override void Dispose( bool disposing )

if( disposing )

if (components != null)

base.Dispose( disposing );

#region Windows Form Designer generated code

///

private void InitializeComponent()

this.button1 = new System.Windows.Forms.Button();

this.progressBar1 = new System.Windows.Forms.ProgressBar();

this.SuspendLayout();

//

// button1

//

this.button1.Location = new System.Drawing.Point(200, 88);

this.button1.Name = "button1";

this.button1.Size = new System.Drawing.Size(96, 23);

this.button1.TabIndex = 0;

this.button1.Text = "button1";

this.button1.Click += new System.EventHandler(this.button1_Click);

//

// progressBar1

//

this.progressBar1.Location = new System.Drawing.Point(24, 24);

this.progressBar1.Name = "progressBar1";

this.progressBar1.Size = new System.Drawing.Size(352, 24);

this.progressBar1.Step = 1;

this.progressBar1.TabIndex = 1;

this.progressBar1.Visible = false;

//

// Form1

//

this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);

this.ClientSize = new System.Drawing.Size(400, 182);

this.Controls.Add(this.progressBar1);

this.Controls.Add(this.button1);

this.Name = "Form1";

this.Text = "Form1";

this.ResumeLayout(false);

///

static void Main()

Application.Run(new Form1());

private void button1_Click(object sender, System.EventArgs e)

WorkerThread = new Thread(new ThreadStart(this.WorkerThreadFunction));

private void WorkerThreadFunction()

Invoke(m_DelegateThreadStart, null);

for(int i = 0; i< 100; i++)

Invoke(m_DelegateThreadMessage,new object[]{i});

// here you can perform some other action ..

// i use thread sleep to show you how the thread is working

Invoke(m_DelegateThreadFinished, null);

private void ThreadStart()

progressBar1.Visible = true;

private void ThreadFinished()

progressBar1.Visible = false;

private void ThreadIncrement(int val)

if (progressBar1.Value <= 99)