Those methods handle completely different functions then what you may thinking. Update() or Invalidate() are used to refresh the entire form based on the information contained in the OnPaint event. Their is no way to pause the OnPaint event unless you write your own graphic logic. One of my articles Basics of Falling Blocks in VB2005[^] has been able help some people understand how the painting system works in WinForms as well as how it should be thought of. Regards, Thomas Stockwell Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning. Visit my Blog

Hi Anneke, your original code tried to sort a list; that is where you need an object that implements IComparer so you can specify your specific sort order. The Sort method holds all the code to iterate through the collection as often as needed to get it sorted, you only have to tell it what your sort order is by offering an IComparer object. On the other hand, if you need to FIND an object in a collection, you have to do that yourself, probably using a loop (such as foreach); you could still use the IComparer object inside the loop, but you don't have to do it that way. :) Luc Pattyn [Forum Guidelines] [My Articles] This month's tips: - before you ask a question here, search CodeProject, then Google; - the quality and detail of your question reflects on the effectiveness of the help you are likely to get; - use PRE tags to preserve formatting when showing multi-line code snippets.