如何确定两个HashSets是否相等(按值,而不是通过引用)？

HashSet<int> set1 = new HashSet<int> { 1, 2, 3 };
HashSet<int> set2 = new HashSet<int> { 1, 2, 3 };

bool areEqual = set1.Equals(set2);

HashSet<int> set1 = new HashSet<int> { 1, 2, 3 };
HashSet<int> set2 = new HashSet<int> { 1, 2, 3 };

bool areEqual = set1.SetEquals(set2);