// Constructor
public CalculatorCommand(Calculator calculator,
char @operator, int operand)
{
this._calculator = calculator;
this._operator = @operator;
this._operand = operand;
}
/// <summary>
/// Entry point into console application.
/// </summary>
static void Main()
{
Calculator myCalculator = new Calculator();
// Create user and let her compute (Invoker)
User user = new User();
Command add100command = new CalculatorCommand(myCalculator, '+', 100);
Command sub50command = new CalculatorCommand(myCalculator, '-', 50);
Command multi10command = new CalculatorCommand(myCalculator, '*', 10);
Command div2command = new CalculatorCommand(myCalculator, '/', 2);
// User presses calculator buttons
//Set the command
//And executes the command
user.ComputeCalculatorCommand(add100command);
user.ComputeCalculatorCommand(sub50command);
user.ComputeCalculatorCommand(multi10command);
user.ComputeCalculatorCommand(div2command);
// Undo 4 commands
user.Undo(4);
// Redo 3 commands
user.Redo(3);
// Wait for user
Console.ReadKey();
}