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C# Tuples

C# tuple is a data structure that is used to store sequence of elements. Tuple with n elements are known as n-tuple.

We can use Tuple for the following reasons.

  • To represent a single set of data
  • To provide easy access and manipulation of data
  • To return multiple values from a method without using out parameter
  • To pass multiple values to a method through a single parameter

In C#, tuple is a class that contains static methods. These methods are used to create tuple objects. Following is the syntax of Tuple class.

C# Tuple Class Syntax


C# Tuple Methods

The following table contains methods of Tuple class.

Method name Description
Create<T1>(T1) It is used to create a new 1-tuple, or singleton.
Create<T1,T2>(T1,T2) It is used to create a new 2-tuple, or pair.
Create<T1,T2,T3>(T1,T2,T3) It is used to create a new 3-tuple, or triple.
Create(T1,T2,T3,T4) It is used to create a new 4-tuple, or quadruple.
Create<T1,T2,T3,T4,T5>(T1,T2,T3,T4,T5) It is used to create a new 5-tuple, or quintuple.
Create<T1,T2,T3,T4,T5,T6>(T1,T2,T3,T4,T5,T6) It is used to create a new 6-tuple, or sextuple.
Create<T1,T2,T3,T4,T5,T6,T7>(T1,T2,T3,T4,T5,T6,T7) It is used to create a new 7-tuple, or septuple.
Create<T1,T2,T3,T4,T5,T6,T7,T8>(T1,T2,T3,T4,T5,T6,T7,T8) It is used to create a new 8-tuple, or octuple.

Let's see an example that creates a Tuple to store book information. Here, we are creating Tuple without using static method.

C# Tuple Example 1

Output:

-----------------Book's Record---------------------
Title  C# in Depth
Author Jon Skeet
Price  100.5

We can use static methods of Tuple class to create Tuple. In the following example, we are using create method.

C# Tuple Example with Static Method

Output:

-----------------Book's Record---------------------
Title  C# in Depth
Author Jon Skeet
Price  100.5

We can use tuple to return multiple values from a method. In the following example, we are returning a tuple to the caller method.

C# Tuple Example Return Multiple Values


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