employeestest.cs

this is a good book for the visual c#

// Fig. 10.14: EmployeesTest.cs
// Demonstrates polymorphism by displaying earnings
// for various Employee types.
using System;
using System.Windows.Forms;

namespace Employees
{
   public class EmployeesTest
   {
      public static void Main( string[] args )
      {
         Boss boss = new Boss( "John", "Smith", 800 );

         CommissionWorker commissionWorker = 
            new CommissionWorker( "Sue", "Jones", 400, 3, 150 );

         PieceWorker pieceWorker = new PieceWorker( "Bob", "Lewis",
            Convert.ToDecimal( 2.5 ), 200 );

         HourlyWorker hourlyWorker = new HourlyWorker( "Karen", 
            "Price", Convert.ToDecimal( 13.75 ), 50 );

         Employee employee = boss;

         string output = GetString( employee ) + boss + " earned " + 
               boss.Earnings().ToString( "C" ) + "\n\n";

         employee = commissionWorker;

         output += GetString( employee ) + commissionWorker + 
            " earned " + 
            commissionWorker.Earnings().ToString( "C" ) + "\n\n";

         employee = pieceWorker;

         output += GetString( employee ) + pieceWorker + 
            " earned " + pieceWorker.Earnings().ToString( "C" ) +
            "\n\n";

         employee = hourlyWorker;

         output += GetString( employee ) + hourlyWorker + 
            " earned " + hourlyWorker.Earnings().ToString( "C" ) +
            "\n\n";

         MessageBox.Show( output, "Demonstrating Polymorphism",
            MessageBoxButtons.OK, MessageBoxIcon.Information );

      } // end method Main

      // return string that contains Employee information
      public static string GetString( Employee worker )
      {
         return worker.ToString() + " earned " + 
            worker.Earnings().ToString( "C" ) + "\n";
      }
   }
}