What is valuetuple in c# with example

In C#, a ValueTuple is a lightweight data structure introduced in C# 7.0 that allows you to create tuples with named or unnamed elements. ValueTuples are value types, which means they are structs rather than reference types (classes), making them more memory-efficient. Here's an example of using ValueTuples:

```csharp
using System;

class Program
{
    static void Main()
    {
        // Creating a ValueTuple with named elements
        var person = (Name: "John", Age: 30);

        // Accessing elements using names
        Console.WriteLine($"Name: {person.Name}, Age: {person.Age}");

        // Creating a ValueTuple with unnamed elements
        var point = (3, 4);

        // Accessing elements using itemN notation
        Console.WriteLine($"X: {point.Item1}, Y: {point.Item2}");
    }
}
```

In the example above, we create two ValueTuples. The first one has named elements (Name and Age), and the second one has unnamed elements. You can access the elements of a ValueTuple using either their names or the `ItemN` notation, where N is the 1-based index of the element. ValueTuples are useful when you need to group related data together without creating custom classes or structures.

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