Case Insensitive Dictionaries in .Net

If you're using a Dictionary (with string keys) in .Net and you ever need to call .ToLower() or .ToUpper() on your key, remember that you can create that dictionary with irrelevant casing:

new Dictionary<string, object>(StringComparer.OrdinalIgnoreCase);

I see this most useful when a string is the key, but all you really need here is an instance of IEqualityComparer<T>, where T is your key's type. In the example above, I'm just leveraging something built into the framework already.