Is there an AddUnique method similar to Addrange() for alist in C#

Question

I have a list in C#:

       var list = new List<Car>();        list.AddRange(GetGreenCars());        list.AddRange(GetBigCars());        list.AddRange(GetSmallCars()); 

the issue is that some of the same cars get returned in different functions and I don't want them in the list more than once. Each car has a unique Name attribute. Is there anyway I can have something like this above but will only add items if they are unique ?

Answer 1

One choice is to add them and remove the repeated ones:

var list = new List<Car>(); list.AddRange(GetGreenCars()); list.AddRange(GetBigCars()); list.AddRange(GetSmallCars()); list = list.Distinct().ToList();