private void btnAnonymousMethods_Click(object sender, EventArgs e)
{
string s = "Anonymous methods";
dDelegate d = delegate(int k)
{
s = "Anonymous methods UHUUU!!!!!";
MessageBox.Show(s + k);
};
d += Mes;
MessageBox.Show("Normal Instruction");
d(12);
d(10);
}
static void Main(string[] args)
{
// Establish each parameter [local variables]
double a = 245.9;
double b = 0.00000003;
double c = 10.9;
double d = 3.00000003;
double e = 33.3;
double f = 56.1111113;
double g = 6.0;
double h = 3.0;
// Initialize the class as grundBe
Grundberechnungen grundBe = new Grundberechnungen();
// Instance the delegate as doubleDel
doubleDelegate doubleDel = grundBe.Addition;
//// Invoke the delegate and establish the values of the parameters
doubleDel(a, b);
Console.WriteLine("=======================================================================");
//// Invoke the delegate and apply one or many methods of the class.
//// "Multicast Feature" (This is only valid for the same type of method [here 'void'])
//// ****Both methods "Multiplication" and "Addition" are called using the variables invoked at the end****
doubleDel += grundBe.Multiplication;
//// Invoke the delegate and establish the values of the parameters
doubleDel(c, d);
Console.WriteLine("=======================================================================");
//// Invoke the delegate and apply one or many methods of the class.
//// "Multicast Feature" (this is only valid for the same type of method [here 'void'])
//// ****The method "Multiplication" is removed and method "Substraction" is added****
doubleDel -= grundBe.Multiplication;
doubleDel += grundBe.Substraction;
//// Invoke the delegate and establish the values of the parameters
doubleDel(e, f);
Console.WriteLine("=======================================================================");
//// When using other method with another method type
//// For example: double instead of void
//// The Invoke must be packed in a Console.WriteLine();
//// The "Multicast feature" is lost,
//// consequently only last called method is considered.
dDelegate dDel = new dDelegate(grundBe.Div);
dDel += grundBe.Mult;
Console.WriteLine("Variables = 6, 3. Mult method with variables = 6 * 3, Div method is not considered");
Console.WriteLine(dDel(g, h));
dDel += grundBe.Div;
Console.WriteLine("Variables = 6, 3. Div method with variables = 6 / 3, Mult method is not considered");
Console.WriteLine(dDel(g, h));
// Conclusion:
// - Methods indicated by delegates persist in the programm unless it is specified that they are removed from it.
// - Methods indicated by delegates take the variables specified AFTER them.
// - If no parameter is specified after a delegate, the delegate is not invoked (not deployed on the console).
// - Multicast feature is valid only for "void" method type.
}
