C# Tuple<T1,T2,T3,T4> Class

Tuple<T1, T2, T3, T4> class creates a 4-tuple or quadruple. It represents a tuple that contains four elements. we can instantiate a Tuple<T1, T2, T3, T4> object by calling either the Tuple<T1, T2, T3, T4>(T1, T2, T3, T4) constructor or by the static Tuple.Create method.

• It implements the IStructuralComparable, IStructuralEquatable, and IComparable interface.
• It is defined under the System namespace.
• It represents multiple data into a single data set.
• It allows us to create, manipulate, and access data sets.
• It returns multiple values from a method without using out parameter.
• It allows the passing of multiple values to a method with the help of single parameters.
• It can also store duplicate elements.

Constructor

Tuple<T1, T2, T3, T4>(T1, T2, T3, T4)

Property

We can retrieve value of Tuple<T1, T2, T3, T4> object by read-only Item<elementNumber> instance property

• Item1: Gets the value of the first component of the tuple object.
• Item2: Gets the value of the second component of the tuple object.
• Item3: Gets the value of the third component of the tuple object.
• Item4: Gets the value of the fourth component of the tuple object.

Example:

using System;

class Geeks
{
	static public void Main()
	{
		// Creating 4-Tuple using constructor
		Tuple<int, int, int, int> t1 = new Tuple<int,
        int, int, int>(20, 40, 90, 89);

		Tuple<int, int, int, int> t2 = new Tuple<int,
		int, int, int>(20, 40, 90, 89);

		// Using Equals method
		if (t1.Equals(t2))
			Console.WriteLine("Tuple Matched..");
		else
			Console.WriteLine("Tuple not Matched..");

	}
}

Value of the First Component: 79
Value of the Second Component: 34
Value of the Third Component: 67
Value of the Fourth Component: Geeks

Methods

There are some important methods which are used in tuples are given below:

Example:

using System;

class Geeks
{
	static public void Main()
	{
		// Creating 4-Tuple using constructor
		Tuple<int, int, int, int> mytuple1 = new Tuple<int,
        int, int, int>(20, 40, 90, 89);

		Tuple<int, int, int, int> mytuple2 = new Tuple<int,
		int, int, int>(20, 40, 90, 89);

		// Using Equals method
		if (mytuple1.Equals(mytuple2))
			Console.WriteLine("Tuple Matched..");

		else
			Console.WriteLine("Tuple not Matched..");

	}
}

Tuple Matched..