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I have a case where I need to grab a bunch of items on distinct, but my source is a collection of objects with two properties, like this: public class SkillRequirement { public string Skill { get; set; } public string Requirement { get; set; } } I try to get a collection as follows: SkillRequirementComparer sCom = new SkillRequirementComparer(); var distinct_list = source.Distinct(sCom); I tried to implement an IEqualityComparer<T> for this, but I fell stumped at the GetHashCode() method. The class for the Comparer: public class SkillRequirementComparer : IEqualityComparer<SkillRequirement> { public bool Equals(SkillRequirement x, SkillRequirement y) { if (x.Skill.Equals(y.Skill) && x.Requirement.Equals(y.Requirement)) { return true; } else { return false; } } public int GetHashCode(SkillRequirement obj) { //????? } } Normally I would just use GetHashCode() on a property, but because I am comparing on two properties, I'm a bit at a loss of what to do. Am I doing anything wrong, or missing something really obvious?

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