Sort a List using query expressions

Question

I have a problem using Linq to order a structure like this :

public class Person
{
    public int ID { get; set; }
    public List Attribu         


        

Answer 1

I'd imagine that you're getting an exception where one item doesn't have an age attribute. I tried the below code, and it worked fine - I'm guessing your data is a bit off, as pointed out by other posters. Anyway, the below works fine...

    List personList = new List();
    Random rand = new Random();

    //generate 50 random persons
    for (int i = 0; i < 50; i++)
    {
        Person p = new Person();
        p.Attributes = new List();
        p.Attributes.Add(new PersonAttribute() { ID = 8, Name = "Age", Value = rand.Next(0, 100).ToString() });
        p.Attributes.Add(new PersonAttribute() { ID = 10, Name = "Name", Value = rand.Next(0, 100).ToString() });
        personList.Add(p);
    }

    var finalList = personList.OrderBy(c => c.Attributes.Find(a => a.Name == "Age").Value).ToList();