Why doesn't .Net have a Set data structure?

Question

One of my biggest issues dealing with a move from Java to .Net is the fact that there isn\'t a Set interface in .Net. I know there are libraries I could go and download but

Answer 1

I also moved from Java to .Net recently (due to professional employment) and I must admit that my initial problems have also been on collections.
In the current .Net version (3.5 and speaking about C#) you should orientate yourself on

• ICollection
• IList
• List
• IDictionary
• IEnumerable

These are the most commonly used (hope I didn't miss one)