实体类实现IComparable接口，而且必须实现CompareTo方法
实体类定义如下：
1 class Info:IComparable 2 { 3 public int Id { get; set; } 4 public string Name { get; set; } 5 6 public int CompareTo(object obj) { 7 int result; 8 try 9 { 10 Info info = obj as Info; 11 if (this.Id > info.Id) 12 { 13 result = 0; 14 } 15 else 16 result = 1; 17 return result; 18 } 19 catch (Exception ex) { throw new Exception(ex.Message); } 20 } 21 }
调用方式如下，只需要用sort方法就能实现对list进行排序。
1 private static void ReadAccordingCompare() { 2 List<Info> infoList = new List<Info>(); 3 infoList.Add( 4 new Info() { Id = 1, Name = "abc" }); 5 infoList.Add(new Info() { Id = 3, Name = "rose" }); 6 infoList.Add(new Info() { Id = 2, Name = "woft" }); 7 infoList.Sort(); 8 foreach (var item in infoList) 9 { 10 Console.WriteLine(item.Id + ":" + item.Name); 11 } 12 }