How do I use Linq to obtain a unique list of properties from a list of objects?

Question

I\'m trying to use Linq to return a list of ids given a list of objects where the id is a property. I\'d like to be able to do this without looping through each object and p

Answer 1

When taking Distinct we have to cast into IEnumerable too. If list is model means, need to write code like this

 IEnumerable<T> ids = list.Select(x => x).Distinct();

Answer 2

Use the Distinct operator:

var idList = yourList.Select(x=> x.ID).Distinct();

Answer 3

        int[] numbers = {1,2,3,4,5,3,6,4,7,8,9,1,0 };
        var nonRepeats = (from n in numbers select n).Distinct();


        foreach (var d in nonRepeats)
        {

            Response.Write(d);
        }

OUTPUT

1234567890

Answer 4

Using straight Linq, with the Distinct() extension:

var idList = (from x in yourList select x.ID).Distinct();

Answer 5

IEnumerable<int> ids = list.Select(x=>x.ID).Distinct();