Timothy

自定類別

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace mod01
{
    public class Employee:System.IComparable<Employee>
    {
        //Data Field
        private Int32 _id;

        public Int32 Id
        {
            get { return _id; }
            set { _id = value; }
        }
        private Decimal _salary;

        public Decimal Salary
        {
            get { return _salary; }
            set { _salary = value; }
        }
        private String _name;

        public String Name
        {
            get { return _name; }
            set { _name = value; }
        }
        public Employee() { }
        //解構子
        ~Employee()
        {
            //類別成員
            AppUtil.writeMsg(@"c:\mylog.txt","Employee解構了!!"+DateTime.Now.ToString());
        }

        #region IComparable<Employee> 成員

        public int CompareTo(Employee other)
        {
            Int32 r = 0; // 相等
            if (this.Id > other.Id)
            {
                r = 1;
            }
            if (this.Id < other.Id)
            {
                r = -1;
            }
            return r;
        }

        #endregion
    }
}

主程式

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace mod01
{
    class TestSortEmployee
    {
        public static void Main()
        {
            // 定義陣列
            Employee[] emps = { 
                                  new Employee(){ Id=10, Name="eric", Salary=50000},
                                     new Employee(){ Id=1, Name="sam", Salary=20000},
                                      new Employee(){ Id=3, Name="bill", Salary=100000},
                                       new Employee(){ Id=2, Name="linda", Salary=30000},
                              };
            //重新排序
            System.Array.Sort(emps);
            foreach (Employee e in emps)
            {
                System.Console.WriteLine(e.Id.ToString());
            }

        }
    }
}

輸出

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