IList<string> strList1 = new List<string>(){"One", "Two", "Three", "Four", "Three"};IList<string> strList2 = new List<string>(){"One", "Two", "Three", "Four", "Three"};bool isEqual = strList1.SequenceEqual(strList2); // returns true

IList<string> strList1 = new List<string>(){"One", "Two", "Three", "Four", "Three"};IList<string> strList2 = new List<string>(){ "Two", "One", "Three", "Four", "Three"};bool isEqual = strList1.SequenceEqual(strList2); // returns false//如果是引用类型,则比较的是引用
Student std = new Student() { StudentID = 1, StudentName = "Bill" };IList<Student> studentList1 = new List<Student>(){ std };IList<Student> studentList2 = new List<Student>(){ std };bool isEqual = studentList1.SequenceEqual(studentList2); // returns true

Student std1 = new Student() { StudentID = 1, StudentName = "Bill" };
Student std2 = new Student() { StudentID = 1, StudentName = "Bill" };IList<Student> studentList3 = new List<Student>(){ std1};IList<Student> studentList4 = new List<Student>(){ std2 };isEqual = studentList3.SequenceEqual(studentList4);// returns false

//在上面的示例中，studentList1和studentList2包含相同的学生对象std。 所以studentList1.SequenceEqual（studentList2）返回true。 但是，stdList1和stdList2包含两个独立的学生对象std1和std2。 //所以现在，stdList1.SequenceEqual（stdList2）将返回false.//要比较复杂类型的两个集合的值，您需要实现IEqualityComperar <T>接口，如下所示class StudentComparer : IEqualityComparer<Student>
{public bool Equals(Student x, Student y){if (x.StudentID == y.StudentID && x.StudentName.ToLower() == y.StudentName.ToLower())return true;return false;}public int GetHashCode(Student obj){return obj.GetHashCode();}
}// following returns true
bool isEqual = studentList1.SequenceEqual(studentList2, new StudentComparer());