List泛型自定义排序

实现List泛型类将制定元素至前排序

  static void Main(string[] args)
        {
           
            Employee employee = new Employee();
            //设置初始值
            List<Employee> employeeList = new List<Employee>();
            employeeList.Add(new Employee() { EmpId = "001", EmpName = "Tony" });
            employeeList.Add(new Employee() { EmpId = "002", EmpName = "Mack" });
            employeeList.Add(new Employee() { EmpId = "003", EmpName = "Jon" });
            employeeList.Add(new Employee() { EmpId = "004", EmpName = "Dawei" });
            employeeList.Add(new Employee() { EmpId = "005", EmpName = "Jack" });
            employeeList.Add(new Employee() { EmpId = "006", EmpName = "Abby" });
            employeeList.Add(new Employee() { EmpId = "007", EmpName = "Carrie" });
            //指定置前排序元素
            List<Employee> toSortList = new List<Employee>();
            toSortList.Add(new Employee() { EmpId = "003", EmpName = "Jon" });
            toSortList.Add(new Employee() { EmpId = "005", EmpName = "Jack" });
            toSortList.Add(new Employee() { EmpId = "007", EmpName = "Carrie" });
            //自定义 排序委托
            employeeList.Sort((Employee x, Employee y) => (toSortList.Count(e => e.EmpId == y.EmpId) - toSortList.Count(e => e.EmpId == x.EmpId)));
        }

        public class Employee
        {
            public string EmpId
            {
                get;
                set;
            }

            public string EmpName
            {
                get;
                set;
            }
        }

 经过排序后将原本list中按001，002,003，排列的元素排序为003,005,007,001,002,004.。。。将指定的003,005,007，排列在List最前