using System;  
class Employee:IComparable 
{ 
  private int Id; 
  private string Name;  
  public Employee(int id,string name) 
  { 
    this.Id=id; 
    this.Name=name; 
  } 
  public int CompareTo(object obj) 
  { 
    Employee temp=(Employee)obj; 
     if(this.Id>temp.Id) 
    { 
      return 1; 
    } 
    else 
    { 
      if(temp.Id==this.Id) 
        return 0; 
      else 
        return -1; 
    } 
  }
//Sample usage
  public static void Main() 
  { 
    Employee[] employees=new Employee[5]; 
    Console.WriteLine("Before Sort:\n"); 
     for(int i=0;i<employees.Length;i++) 
    { 
      employees[i]=new Employee(5-i,"Employee#" + i); 
      Console.Write(employees[i].Id + ","); 
    } 
    Console.WriteLine(); 
    Array.Sort(employees); 
    Console.WriteLine("After Sort:\n"); 
     for(int i=0;i<employees.Length;i++) 
    { 
      Console.Write(employees[i].Id + ","); 
    } 
    Console.WriteLine(); 
  } 
}