public static ClassTest Factory(ClassTestType type)
{
ClassTest result = null;
switch (type)
{
case ClassTestType.A:
result = new ClassTestA();
break;
case ClassTestType.B:
result = new ClassTestB();
break;
}
return(result);
}
static void TestSwith(ClassTest classTest)
{
switch (classTest)
{
case ClassTestA classA:
classA?.MethodeA();
break;
case ClassTestB classB when classB.Special:
Debug.WriteLine("Special");
classB?.MethodeB();
break;
case ClassTestB classB:
classB?.MethodeB();
break;
}
}
static void Main(string[] args)
{
#region redirect debug output into console
TextWriterTraceListener myWriter = new TextWriterTraceListener(System.Console.Out);
Debug.Listeners.Add(myWriter);
#endregion
var a = ClassTest.Factory(ClassTest.ClassTestType.A);
var b = ClassTest.Factory(ClassTest.ClassTestType.B);
var bSpecial = ClassTest.Factory(ClassTest.ClassTestType.B);
((ClassTestB)bSpecial).Special = true;
Debug.WriteLine("=> TestSwith(a)");
TestSwith(a);
Debug.WriteLine("=> TestSwith(b)");
TestSwith(b);
Debug.WriteLine("=> TestSwith(bSpecial)");
TestSwith(bSpecial);
#region simple pause
Console.ReadKey();
#endregion
}
