How to get a distinct list from a List of objects?

Question

I have a List someList.

class MyClass
{
    public int Prop1...
    public int Prop2...
    public int Prop3...
}

Answer 1

Since the introduction of value tuples, if you want a LINQ equivalent to SQL's DISTINCT

items.GroupBy(item => (item.prop1, item.prop2, ...)).Select(group => group.First())