Some Links to Well-Regarded Sites and Other Recommended Reading
This website provides ready-made classes, walkthroughs and code snippets to aid C#/WinForms developers' productivity. As such it is clearly not a comprehensive reference. However, in the spirit of good practice here are some links to some authoritative or well-known C# and developer resources. It may be useful for the visitor to get to know and frequent these websites (they are all excellent IMO) should the visitor desire to be, for example, an Elvis, not a Mort.
Stack Overflow is well established as the most extensive Q&A website for developers. It's extremely likely you're already familiar with it.
There are many excellent websites supporting C#, which is relief as the MS reference is a little dry (albeit necessary for a deep understanding). If you want to grok a specific C# topic quickly Dot Net Perls is a favourite.
Rosetta Code is an extensive and fascinating programmers' resource. Brush up on your Binary Search here.
If you're looking for some breaktime material then Coding Horror is an excellent developers' blog.