Overload an Operator in C# 4.0

We will be overloading operators to use in methods.

Its very easy to overload operators in C# 4.0.

You can add different overloading values such as +,-,* or /

But we will be focusing on "+" in this blog. 

Lets say we create a class named Word:

public class Word

    {

        public string Text

        {

            get;

            set;

        }

        public static string operator +(Word w1, Word w2)

        {

            return w1.Text + " " + w2.Text;

        }

        public static Word operator +(Word w, int j)

        {

            return new Word()

            {

                Text=w.Text + j.ToString()

            };

        }

        public override string ToString()

        {

            return Text;

        }

    }

    class Program

    {

        static void Main(string[] args)

        {

            Word word1 = new Word() { Text = "Hello" };

            Word word2 = new Word() { Text = "World" };

            Console.WriteLine(word1);

            Console.WriteLine(word2);

            Console.WriteLine(word1 + word2);

            Console.WriteLine(word1 + 7);

            Console.ReadLine();

        }

    }

As you can see its very easy to overload an operator.You can add these (+,-,*,/) values after operator keyword.

And im fully surprised how fast C# 4.0 compiler is! Its like as if im building an application in C++

Dont you think?