static void Main()
{
// The client code picks a concrete strategy and passes it to the context.
// The client should be aware of the differences between strategies in order to make the right choice.
Context context = new Context();
object data = new object();
context.SetData(data);
// Select strategy
int strategyNumber = new Random().Next(1, 3);
switch (strategyNumber)
{
case 1:
context.SetStrategy(new ConcreteStrategy1());
break;
case 2:
default:
context.SetStrategy(new ConcreteStrategy2());
break;
}
// Execute strategy
context.ExecuteStrategy();
}
public static void Demo()
{
Context c = new Context(new OperationAdd());
Console.WriteLine(c.ExecuteStrategy(1, 2));
c = new Context(new OperationSub());
Console.WriteLine(c.ExecuteStrategy(1, 2));
Console.Read();
}
private static void Main(string[] args)
{
Context context = new Context(new OperationAdd());
Console.WriteLine("10 + 5 = " + context.ExecuteStrategy(10, 5));
context = new Context(new OperationSubtract());
Console.WriteLine("10 - 5 = " + context.ExecuteStrategy(10, 5));
context = new Context(new OperationMultiply());
Console.WriteLine("10 * 5 = " + context.ExecuteStrategy(10, 5));
}
static void Main()
{
Context context = new Context(new OperationAdd());
Console.WriteLine("10 + 5 = " + context.ExecuteStrategy(10, 5));
context = new Context(new OperationSubstract());
Console.WriteLine("10 - 5 = " + context.ExecuteStrategy(10, 5));
context = new Context(new OperationMultiply());
Console.WriteLine("10 * 5 = " + context.ExecuteStrategy(10, 5));
}
static void Main(string[] args) {
Context context;
// Three contexts following different strategies
context = new Context(new AddStrategy());
var resultA = context.ExecuteStrategy(3, 4);
Console.WriteLine(resultA);
context = new Context(new SubstractStrategy());
var resultB = context.ExecuteStrategy(3, 4);
Console.WriteLine(resultB);
context = new Context(new MultiplyStrategy());
var resultC = context.ExecuteStrategy(3, 4);
Console.WriteLine(resultC);
Console.ReadKey();
}
public MainWindow()
{
InitializeComponent();
this.Height = 650;
this.Width = 725;
this.GuiUC.DefineText = "In Strategy pattern, a class behavior or its algorithm can be changed at run time";
StringBuilder stringBuilder = new StringBuilder();
Context context = new Context(new OperationAdd());
stringBuilder.Append(string.Format("10 + 5 = {0}", context.ExecuteStrategy(10, 5)) + "\n");
context = new Context(new OperationSubstract());
stringBuilder.Append(string.Format("5 - 3 = {0}", context.ExecuteStrategy(3, 5)) + "\n");
context = new Context(new OperationMultiply());
stringBuilder.Append(string.Format("10 * 5 = {0}", context.ExecuteStrategy(10, 5)) + "\n");
this.GuiUC.TextBlockText = stringBuilder.ToString();
}
private static void Main(string[] args)
{
Context context;
// Three contexts following different strategies
context = new Context(new AddStrategy());
var resultA = context.ExecuteStrategy(3, 4);
Console.WriteLine(resultA);
context = new Context(new SubstractStrategy());
var resultB = context.ExecuteStrategy(3, 4);
Console.WriteLine(resultB);
context = new Context(new MultiplyStrategy());
var resultC = context.ExecuteStrategy(3, 4);
Console.WriteLine(resultC);
Console.ReadKey();
}
