C#

Bitmap b;
Image i;
Graphics g;
b = new Bitmap(width, height);
i = Image.FromHbitmap(b.GetHbitmap());
g = Graphics.FromImage(i);

g.DrawImage(img, 0f, 0f, width, height);
g.Dispose();
img.Dispose();
return i;

public void Play()
{
     player.controls.stop();
     player.currentMedia = player.newMedia(path);
     player.controls.play();
}

public void DoSomething()
{
     int z = 1;
     for(int i=0; i<1000000; i++) {
         z = i + 1000;
         z = z - 1000;
         string str = "Test String";
         str = str + " What's up?";
     }
     MessageBox.Show("Something done");
}

// Case 1: Asynchronous processing
// Signature of DoSomething --> public void DoSomething(Object state)
private void button1_Click(object sender, EventArgs e)
{
     // Get full path of sound file here.
     Play();
     ThreadPool.QueueUserWorkItem(new WaitCallback(DoSomething));
}

// Case 2: Synchronous processing
// Signature of Play --> public void Play(Object state)
private void button2_Click(object sender, EventArgs e)
{
     // Get full path of sound file here.
     ThreadPool.QueueUserWorkItem(new WaitCallback(Play));
     DoSomething();
}

private void Form1_Paint(object sender, PaintEventArgs e)
{
    Graphics gfx = e.Graphics;
    gfx.DrawString("135", new Font("Freestyle Script",
    40f, FontStyle.Bold),
    new SolidBrush(Color.Red),
    new Point(20,20));