How do you create a IDictionary that does case-insensitive key matches. There are a number of solutions posted on the web, but none of them seem quite correct. The following should work.

IDictionary map = new Dictionary(new StringCompInsensitive());


where

public class StringCompInsensitive : IEqualityComparer
{
    public bool Equals(string x, string y)
    {
         return String.Compare(x, y, true) == 0;
    }

    public int GetHashCode(string obj)
    {
          return ((string)obj).ToLower().GetHashCode();
    }
}