C# Data Structure Like Dictionary But Without A Value

Question

Is there any data structure in C# that is like a dictionary but that only has a key and doesn\'t have a value. I basically want a list of integers that I can quickly lookup and

Answer 1

Yes, it's called a HashSet, and available in version 3.5 of the .NET framework. If you use .NET version 2.0, you can use a Dictionary and set values to null.