Implement delegate with a lambda expression - CSharp Custom Type

CSharp examples for Custom Type:delegate

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Description

Implement delegate with a lambda expression

Demo Code



using System;//from  www .  j  a  v  a  2 s.  c  o m
using System.Collections.Generic;
delegate int HandleTwo(int n, int m);
class Program
{
    static void Main(string[] args)
    {
        List<int> numbers = new List<int>() { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 };
        int[] numArray = numbers.ToArray();
        List<string> words = new List<string> { "one", "two", "three", "four", "five" };

        int result3 = Multiply(2, 3, (n, m) => n * m);
        Console.WriteLine("\tProduct of {0} * {1} is {2}", 2, 3, result3);

    }
    static int Multiply(int x, int y, HandleTwo proc)
    {
        if (proc == null)
        {
            throw new ArgumentNullException("Null delegate passed.");
        }
        return proc(x, y);
    }
}

Result


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