C# 4.0 included a new feature called Tuple. A tuple is a data structure that has a specific number and sequence of elements.

Tuple can be used in several ways. Let’s see, how tuple can be used to return multiple values from a method.

In the example, we are passing two integer values to the method and method is performing four mathematical operations (add, subtract, multiplication, division) and returning a tuple with 3 integer and 1 double values for these operations.

  1. using System;
  2. namespace ConsoleApplication1
  3. {
  4. class clsMain
  5. {
  6. static void Main(string[] args)
  7. {
  8. clsTuple objTuple = new clsTuple();
  9. var tuple = objTuple.Operations(10, 3);
  10. Console.WriteLine("Sum:{0}, Subtract:{1}, Multiply :{2}, Division:{3}", tuple.Item1, tuple.Item2, tuple.Item3, tuple.Item4);
  11. System.Threading.Thread.Sleep(2000);
  12. }
  13. }
  14. class clsTuple
  15. {
  16. public Tuple < int, int, int, double > Operations(int i, int j)
  17. {
  18. return Tuple.Create(i + j, i - j, i * j, Convert.ToDouble(i) / j);
  19. }
  20. }
  21. }