public void Calc()
{
CalculateSomething someCircle = x => Math.PI * x * x;
double circle = someCircle(15);
Console.WriteLine(circle);
}
static void TestSimpleDelegates()
{
SimpleDelegates sd = new SimpleDelegates();
// The third step is to create the instance of delegate
CalculateSomething cSquare = new CalculateSomething(sd.Square);
// This is also called MethodGroup because it contains the method name
// and the object on which it is called, and more than one methods may
// be available due to overloading. The implicit conversation will
// convert a method group to any delegate type with compatible
// signature.
CalculateSomething cCube = new CalculateSomething(sd.Cube);
cSquare += cCube;
// The fourth step is delegate instance invocation
Console.WriteLine(cSquare(12));
Console.WriteLine(cCube(3));
Console.ReadLine();
}
