Simplify Overriding Equals(), GetHashCode() in C# for Better Maintainability

Question

I find my self overriding Equals() and GetHashCode() frequently to implement the semantic that business objects with identical property values are

Answer 1

Perhaps I'm confused here, but shouldn't the on null check return a 1 instead of a 0 in the GetHashCode override?

So

MyStringProp == null ? 0 : MyStringProp.GetHashValue()

should be

MyStringProp == null ? 1 : MyStringProp.GetHashValue()