Tuples With New Features In C# 7.0

Recently, Microsoft announced various new features in C# 7.0 with Visual Studio 2017. In C# 7.0, some new feature of tuples are enhanced with Visual Studio 2017. Tuples aren’t new in C# or.NET. They were first introduced as a part of.NET Framework 4.0. This useful feature of the tuple is all about returning multiple value without having:

A class and list<> of the class.
Array, observableCollection, ArrayList or Dictionary.
A series of ref or out parameters.

It is similar to the code snippet given below.

public (string name, string dept, int id) GetData()
{
return ("Avnish", "R&D", 001);
}

Before C# 7.0, the use of tuple is given below.

public Tuple<string, string, int> GetData2()
{
return new Tuple<string, string, int>("Rakesh", "Marketing", 002);
}

This first thing to be noted is that it is not included automatically in a new project. You must include the System.ValueTuple Nuget package to take an advantage of it in your Visual studio 2017 or its community edition.

Let's create a console project for demo.

Step 1

Create a new 'Console App' in Visual Studio 2017 RC or Visual Studio 2017.

Create console app

Step 2

Go to add a NuGet package. By right click to "References" in Solution Explorer, click on "Manage NuGet Package". Now, search for "System.ValueTuple" and install such package.

Step 3

For use of tuples, add the code given below in Program.cs.

namespace TupleDemo
{
class Program
{
static void Main(string[] args)
{
Demo demo = new Demo();
var result = demo.GetData();
Console.WriteLine("Name= " + result.name + " Dept = " + result.dept + " Id= " + result.id);
var result2 = demo.GetData2();
Console.WriteLine("Name= " + result2.Item1 + " Dept = " + result2.Item2 + " Id= " + result2.Item3);
var result3 = demo.GetData3();
Console.WriteLine("Name= " + result3.Item1 + " Dept = " + result3.Item2 + " Id= " + result3.Item3);
Console.ReadKey();
}
}
class Demo
{
public (string name, string dept, int id) GetData()
{
return ("Avnish", "R&D", 001);
}
public Tuple<string, string, int> GetData2()
{
return new Tuple<string, string, int>("Rakesh", "Marketing", 002);
}
public (string, string, int) GetData3()
{
return ("Mukesh", "Testing", 003);
}
}
}

Step 4

Build and run the project.

Thanks for reading.

5 Comments

Join the conversation! Your thoughts help the community grow.

Avnish Kumar8y ago
Thanks for your valuable feedback...
Avnish Kumar8y ago
If you target a Framework that doesn’t yet include those types, you can instead pick them up from NuGet
Archana Saini8y ago
great information . Thanks :)
Md Ghouse9y ago
Good work u did Freind .... NiceExplination
- Avnish Kumar9y ago
  Thanks for this.. .........friend