How do I use LINQ's Select method in C#?

Can you explain how to use the Select method in LINQ with C#?

Sure! The Select method in LINQ is used to project each element of a sequence into a new form. It allows you to transform data.

Can you give me a code example of using Select?

Absolutely! Here's a simple example:

var numbers = new List<int> { 1, 2, 3, 4, 5 };
var squares = numbers.Select(n => n * n);

This will create a new collection of squares of the numbers.

What if I want to select multiple properties from an object?

You can use an anonymous type to select multiple properties. For example:

var people = new List<Person> {
    new Person { Name = "Alice", Age = 30 },
    new Person { Name = "Bob", Age = 25 }
};
var selected = people.Select(p => new { p.Name, p.Age });

This will select both Name and Age.

Can I use Select with a condition?

Yes, you can combine Select with Where to filter results. For example:

var evenSquares = numbers.Where(n => n % 2 == 0).Select(n => n * n);

This will give you the squares of even numbers only.