I have a strongly typed list of custom objects, MyObject, which has a property Id, along with some other properties.
Let's say that the Id of a MyObject defines it as unique and I want to check if my collection doesn't already have a MyObject object that has an Id of 1 before I add my new MyObject to the collection.
I want to use if(!List<MyObject>.Contains(myObj)), but how do I enforce the fact that only one or two properties of MyObject define it as unique?
I can use IComparable? Or do I only have to override an Equals method? If so, I'd need to inherit something first, is that right?