System.Collections.Generic.HashSet

Added in .NET 3.5
System.Collections.Generic.HashSet

Fast hash-based lookup to find a given value
Items cannot be accessed by their position
Elements are unique

Methods

Contains
ExceptWith
IsProperSubset
IsProperSuperset
IsSubsetOf
IsSupersetOf
Overlaps
SetEquals
SymmetricExceptWith

All these methods accept parameters of type IEnumerabe<T>

Add Method

IntersectWith Method

UnionWith Method