SequenceEqual for specific properties

Question

I would like to compare two lists of objects. The objects have four different properties. I need to compare only three of them as sequence (only three because one is always diff

Answer 1

You could use the SequenceEqual overload that allows you to pass in an IEqualityComparer<T> implementation that only includes the properties that you wish to compare.

The example on that linked page is a good one.

Answer 2

You can use the Enumerable.SequenceEqual overload that allows you to specify a custom IEqualityComparer - implement a custom one that only compares the three properties you are interested in.