What is the purpose of Tuple? Explain with example.

Answer:

C#4.0 has introduce a new feature call Tuple.It is useful when we want to return more than one value from a method or function.

Let us look the below example

class Program

{

	static void Main(string[] args)

	{



		var returnValue = Calculate();



		string format =

			"Addition: {0}" + Environment.NewLine +

			"Subtraction: {1}" + Environment.NewLine +

			"Multiplication: {2}" + Environment.NewLine +

			"Division: {3}";

		string result = string.Format(format, returnValue.Item1, returnValue.Item2, returnValue.Item3, returnValue.Item4);

		Console.WriteLine(result);

		Console.ReadKey(true);

	}



	private static Tuple<int,int,int,int> Calculate()

	{

		int num1 = 20;

		int num2 = 10;

		return Tuple.Create(num1+num2,num1-num2,num1 * num2,num1/num2);

	}

}

As can be seen that using Tuple we can return multiple values from the function/method in a better and readable way.