C#中ReferenceEquals和Equals的区别

string peom1 = "Kubla Khan";
            string peom2 = "Kubla Khan";
            string peom3 = String.Copy(peom2);
            string peom4 = "kubla khan";

            //ReferenceEquals()判断两个字符串是否指向相同的内存地址
            Console.WriteLine("peom1 == peom2:"+(peom1 == peom2));//True
            Console.WriteLine("peom1 == peom3:" + (peom1 == peom3));//True
            Console.WriteLine("ReferenceEquals(peom1,peom3):" + ReferenceEquals(peom1, peom3));//False
            
            //Equals,先判断两个字符串有相同的内存位置，则两个字符串相等；否则逐字符比较两个字符串，判断是否相等
            Console.WriteLine("Equal(peom1,peom3):" +String.Equals(peom1, peom2));//true
            Console.WriteLine("Equal(peom1,peom3):" + String.Equals(peom1, peom3));//true