using System;

using System.Collections.Generic;

using System.Linq;

using System.Linq.Expressions;

using System.Threading;

​

public class ScriptArgumentsTemplate

{

    /*

    This class will be available to CSharpScript during compilation and execution.

    e.g.

        //by

        By(car => car.Model);

        //then

        By(car => car.Score);

    */

    private IOrderedQueryable<AbstractClass> itemsQuery;

    public IReadOnlyList<AbstractClass> Items { get; internal set; }

​

    public void By<TKey>(Expression<Func<AbstractClass, TKey>> expression) 

    {

        itemsQuery = itemsQuery == null ? Items.AsQueryable().OrderBy(expression) : itemsQuery.ThenBy(expression);

    }   

}

​

public abstract class AbstractClass

{

    public string Model { get; }

}

​

public class Car : AbstractClass

{

    public int Score { get; }

}

​

public class Truck : AbstractClass

{

    public int Wheight { get; }

}