public static int ReturnDelegateResult(NumericDelegate numericDelegate, int a, int b)
{
if (numericDelegate != null)
{
return(numericDelegate(a, b));
}
return(0);
}
public static void Main(string[] args)
{
NumericDelegate numericDelegateAdd = new NumericDelegate(DelegateImplementor.Add);
NumericDelegate numericDelegateSubract = new NumericDelegate(DelegateImplementor.Subract);
Console.Write("Enter the first number:");
int a = int.Parse(Console.ReadLine());
Console.Write("Enter the second number:");
int b = int.Parse(Console.ReadLine());
Console.WriteLine("Addition: {0}", numericDelegateAdd(a, b));
Console.WriteLine("Subraction: {0}", numericDelegateSubract(a, b));
Console.WriteLine("Delegate_Test Result 1 :{0}", Delegate_Test.ReturnDelegateResult(numericDelegateAdd, a, b));
Console.WriteLine("Delegate_Test Result 2 :{0}", Delegate_Test.ReturnDelegateResult(numericDelegateSubract, a, b));
Console.WriteLine("Delegate_Test Result 3 :{0}", Delegate_Test.ReturnDelegateResult(null, a, b));
NumericDelegate nc = numericDelegateAdd + numericDelegateSubract;
Console.WriteLine("Multi Cast: {0}", nc(a, b));
Console.ReadLine();
}