C#: What is the difference between == and Equals()?

1string s1 = "hello";
2string s2 = new string("hello");
3
4s1 == s2;      // true (compares values)
5s1.Equals(s2); // true (compares values)
6
7// For custom classes:
8class Person {
9    public string Name;
10}
11
12var p1 = new Person { Name = "Alice" };
13var p2 = new Person { Name = "Alice" };
14
15p1 == p2;      // false (compares references)
16p1.Equals(p2); // false (compares references)