What are some examples of LINQ queries in C#?

What are some examples of LINQ queries in C#?

LINQ (Language Integrated Query) allows you to query collections in C#. Here are a few examples:

1. Filtering: var result = myList.Where(x => x.Age > 18);
2. Sorting: var sorted = myList.OrderBy(x => x.Name);
3. Selecting: var names = myList.Select(x => x.Name);
4. Grouping: var grouped = myList.GroupBy(x => x.City);

Would you like to see more detailed examples?

Yes, can you explain the filtering example?

Sure! The filtering example myList.Where(x => x.Age > 18) retrieves all elements from myList where the Age property is greater than 18. It uses a lambda expression to define the condition. Would you like to see how to implement this in a full program?

Yes, please provide a complete example.

Here's a complete example:

using System;
using System.Collections.Generic;
using System.Linq;

class Person {
    public string Name { get; set; }
    public int Age { get; set; }
}

class Program {
    static void Main() {
        List<Person> myList = new List<Person> {
            new Person { Name = "Alice", Age = 30 },
            new Person { Name = "Bob", Age = 17 },
            new Person { Name = "Charlie", Age = 22 }
        };

        var adults = myList.Where(x => x.Age > 18);
        foreach (var person in adults) {
            Console.WriteLine(person.Name);
        }
    }
}

This program will output "Alice" and "Charlie". Let me know if you have more questions!

That's great! Can you show me how to use LINQ for grouping?