C#

// Global variables

System.DateTime startTime = System.DateTime.Now;
int step = 0;

// Display a count of seconds..0, 1, 2..etc..
while (true)
{
	// Calculate the time since we started.
	System.DateTime now = System.DateTime.Now;  // ? declare outside loop,
	System.TimeSpan span = now - startTime;     // ? to save stack allocation

	// if a second has elapsed since last step, then
	// step up.
	if (span.TotalMilliseconds >= step * 1000)
	{
		System.Console.WriteLine("Tick {0}",step);
		step++;
	}
}

System.Drawing.Image img = System.Drawing.Image.FromFile(sour_file);<br />
System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(144, 108);<br />
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bmp);<br />
g.DrawImage(img, 0, 0, 144, 108);<br />
<br />
DoNextFile(bmp);

public delegate void NextFile (System.Drawing.Image img);<br />
public event NextFile Next;<br />
<br />
private void DoNextFile(System.Drawing.Image img)<br />
{<br />
	if (Next!=null)<br />
	Next(img);<br />
}

public void CatchNextFile (System.Drawing.Image img)<br />
{<br />
	if (pbxFile != null)<br />
	{<br />
		pbxFile.Dispose();<br />
	}<br />
	pbxFile.Image = img;<br />
	this.Update();<br />
}