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How to create 2-tuple or pair tuple in C#?

  • Last Updated : 29 Nov, 2019

In C#, a 2-tuple is a tuple that contains two elements and it is also known as pair. You can create a 2-tuple using two different ways:

Using Tuple<T1,T2>(T1, T2) Constructor

You can create 2-tuple using Tuple<T1, T2>(T1, T2) constructor. It initializes a new instance of the Tuple<T1,T2> class. But when you create a tuple using this constructor then you have to specify the type of the element stored in the tuple.

Syntax:



public Tuple (T1 item1, T2 item2);

Parameters:

  • item1: It is the value of the first tuple component.
  • item2: It is the value of the second tuple component.

Example:




// C# program to create 2-tuple
// using the tuple constructor
using System;
  
public class GFG {
  
    // Main method
    static public void Main()
    {
  
        // Creating tuple with two elements
        // Using Tuple<P1, P2>(T1, T2) constructor
        Tuple<string, int> My_Tuple = new Tuple<string, int>("GeeksforGeeks", 10);
  
        Console.WriteLine("Element 1: " + My_Tuple.Item1);
        Console.WriteLine("Element 2: " + My_Tuple.Item2);
    }
}
Output:
Element 1: GeeksforGeeks
Element 2: 10

Using Create Method

You can also create 2-tuple with the help of Create method. When you use this method then there is no need to specify the type of the elements stored in the tuple.

Syntax:

public static Tuple<T1,T2> Create<T1, T2> (T1 item1, T2 item2);

Type Parameters:

  • T1: It is the type of the first tuple component.
  • T2: It is the type of the second tuple component.

Parameters:

  • item1: It is the value of the first tuple component.
  • item2: It is the value of the second tuple component.

Return Type: This method returns 2-tuple whose value is item1 and item2.

Example:




// C# program to create 2-tuple
// using create method
using System;
  
public class GFG {
  
    // Main method
    static public void Main()
    {
  
        // Creating tuple with two elements
        // Using Create method
        var My_Tuple = Tuple.Create("Geeks", 20);
  
        Console.WriteLine("Element 1: " + My_Tuple.Item1);
        Console.WriteLine("Element 2: " + My_Tuple.Item2);
    }
}
Output:
Element 1: Geeks
Element 2: 20

References:




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