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C# ValueTuple <T1,T2,T3,T4,T5> Struct - GeeksforGeeks

Last Updated : 11 Jul, 2025

ValueTuple <T1, T2, T3, T4, T5> struct in C# is part of the System namespace and is used to create a tuple that stores quintuple or 5-ValueTuple. It offers a more lightweight, value-type tuple compared to the older Tuple class and provides better performance and memory management. The ValueTuple <T1, T2, T3, T4, T5> struct is a value type and mutable means the value of its elements can be modified.

instance.ValueTuple<T1, T2, T3, T4, T5>(T1, T2, T3, T4, T5)

The constructor for ValueTuple <T1, T2, T3, T4, T5> initializes the tuple with fvalues. It is not a property, it is a field that can be accessed by ValueTuple<ElementNumber>

• Item1: Gets the value of the current ValueTuple<T1, T2, T3, T4, T5> instance’s first element.
• Item2: Gets the value of the current ValueTuple<T1, T2, T3, T4, T5> instance’s second element.
• Item3: Gets the value of the current ValueTuple<T1, T2, T3, T4, T5> instance’s third element.
• Item4; Gets the value of the current ValueTuple<T1, T2, T3, T4, T5> instance’s fourth element.
• Item5: Gets the value of the current ValueTuple<T1, T2, T3, T4, T5> instance’s fifth element.

Example: Demonstration of access to the ValueTuple<T1, T2, T3, T4, T5> element in C#.

// Accessing the elements of
// ValueTuple<T1, T2, T3, T4, T5> 
using System;

class Geeks
{
	static public void Main()
	{
		// Creating a value tuple 
		// Using Create method 
		var lib = ValueTuple.Create(3456, "The Guide",
		"R. K. Narayan", 1958, "Philosophical novel");

		// Display the element of the given value tuple 
		Console.WriteLine("Book Details: ");
		Console.WriteLine("Book Id: {0}", lib.Item1);
		Console.WriteLine("Book Name: {0}", lib.Item2);
		Console.WriteLine("Author Name: {0}", lib.Item3);
		Console.WriteLine("Publication date: {0}", lib.Item4);
		Console.WriteLine("Gener: {0}", lib.Item5);
	}
}

Book Details: 
Book Id: 3456
Book Name: The Guide
Author Name: R. K. Narayan
Publication date: 1958
Gener: Philosophical novel

Explanation: In the above example create a ValueTuple with five elements of different types and print each element by field Item<elementNumber>.

Method

Description

CompareTo(ValueTuple)

It compares the current ValueTuple<T1> instance to a specified ValueTuple<T1> instance.

Equals(Object)

It returns a value that indicates whether the current ValueTuple<T1> instance equals a specified object.

Equals(ValueTuple<T1>)

It returns a value that indicates whether the current ValueTuple<T1> instance equals a specified ValueTuple<T1> instance.

GetHashCode()

It calculates the hash code for the current ValueTuple<T1> instance.

ToString()

It returns a string that represents the value of this ValueTuple<T1> instance.

// check if two value 
// tuples are equal or not 
using System;

class Geeks
{
	static public void Main()
	{

		// Creating 5-ValueTuple 
		// using Create method 
		var T1 = ValueTuple.Create(1, 2, 3, 4, 5);
		var T2 = ValueTuple.Create(1, 2, 3, 4, 5);

		// Check if both the value 
		// tuples are equal or not 
		if (T1.Equals(T2))
		{
			Console.WriteLine("Tuples Matched...!!");
		}
		else
		{
			Console.WriteLine("Tuples Not Matched...!!");
		}
	}
}

Tuples Matched...!!

• Elements: ValueTuple <T1,T2,T3,T4, T5> contains five elements referred as Item<ElementNumber>.
• Mutable: The value of the Item(fields) can be changed after the tuple is created.
• Type-Safe: The field is specified when the tuple is created, ensuring type safety.
• Implements Interfaces: ValueTuple<T1, T2, T3, T4, T5> implements several interfaces such as:
  • IStructuralComparable
  • IStructuralEquatable
  • IComparable<ValueTuple<T1, T2, T3, T4, T5>>
  • IEquatable<ValueTuple<T1, T2, T3, T4, T5>>
  • ITuple: This makes it useful in various comparison and equality scenarios.
    

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