如果需要对Question实体中的字符串Id进行排序使用Sort函数和委托在解析Id后对Id进行排序价值

    class Question
    {
        public List<QuestionInfo> Questions Info{ get; set; }
    
    }

    class QuestionInfo
    {
        public string Id{ get; set; }
        public string Questions{ get; set; }
    
    }

    var questionnaire = new Question();
     questionnaire.QuestionInfo.Sort((x, y) => int.Parse(x.Id, CultureInfo.CurrentCulture) - int.Parse(y.Id, CultureInfo.CurrentCulture));

在没有Linq的情况下，正如你所说：

public class Order : IComparable
{
    public DateTime OrderDate { get; set; }
    public int OrderId { get; set; }

    public int CompareTo(object obj)
    {
        Order orderToCompare = obj as Order;
        if (orderToCompare.OrderDate < OrderDate || orderToCompare.OrderId < OrderId)
        {
            return 1;
        }
        if (orderToCompare.OrderDate > OrderDate || orderToCompare.OrderId > OrderId)
        {
            return -1;
        }

        // The orders are equivalent.
        return 0;
    }
}

然后只需在订单列表中调用.sort（）

您可以对财产选择做一些更通用的操作，但也可以对您选择的类型进行特定操作，例如“订单”：

将函数编写为通用函数：

public List<Order> GetOrderList<T>(IEnumerable<Order> orders, Func<Order, T> propertySelector)
        {
            return (from order in orders
                    orderby propertySelector(order)
                    select order).ToList();
        } 

然后这样使用：

var ordersOrderedByDate = GetOrderList(orders, x => x.OrderDate);

您可以更加通用，并为您想要订购的产品定义一个开放类型：

public List<T> OrderBy<T,P>(IEnumerable<T> collection, Func<T,P> propertySelector)
        {
            return (from item in collection
                    orderby propertySelector(item)
                    select item).ToList();
        } 

并以相同的方式使用：

var ordersOrderedByDate = OrderBy(orders, x => x.OrderDate);

这是一种愚蠢而不必要的复杂LINQ风格的“OrderBy”方式，但它可能会给你一个如何以通用方式实现的线索

使用LiNQ OrderBy

List<Order> objListOrder=new List<Order> ();
    objListOrder=GetOrderList().OrderBy(o=>o.orderid).ToList();

var obj = db.Items.Where...

var orderBYItemId = obj.OrderByDescending(c => Convert.ToInt32(c.ID));

假设您有以下代码，在这段代码中，我们有一个Passenger类，其中有几个我们想要排序的财产。

public class Passenger
{
    public string Name { get; }
    public string LastName { get; }
    public string PassportNo { get; }
    public string Nationality { get; }

    public Passenger(string name, string lastName, string passportNo, string nationality)
    {
        this.Name = name;
        this.LastName = lastName;
        this.PassportNo = passportNo;
        this.Nationality = nationality;
    }

    public static int CompareByName(Passenger passenger1, Passenger passenger2)
    {
        return String.Compare(passenger1.Name, passenger2.Name);
    }

    public static int CompareByLastName(Passenger passenger1, Passenger passenger2)
    {
        return String.Compare(passenger1.LastName, passenger2.LastName);
    }

    public static int CompareNationality(Passenger passenger1, Passenger passenger2)
    {
        return String.Compare(passenger1.Nationality, passenger2.Nationality);
    }
}

public class TestPassengerSort
{
    Passenger p1 = new Passenger("Johon", "Floid", "A123456789", "USA");
    Passenger p2 = new Passenger("Jo", "Sina", "A987463215", "UAE");
    Passenger p3 = new Passenger("Ped", "Zoola", "A987855215", "Italy");

    public void SortThem()
    {
        Passenger[] passengers = new Passenger[] { p1, p2, p3 };
        List<Passenger> passengerList = new List<Passenger> { p1, p2, p3 };

        Array.Sort(passengers, Passenger.CompareByName);
        Array.Sort(passengers, Passenger.CompareByLastName);
        Array.Sort(passengers, Passenger.CompareNationality);

        passengerList.Sort(Passenger.CompareByName);
        passengerList.Sort(Passenger.CompareByLastName);
        passengerList.Sort(Passenger.CompareNationality);

    }
}

因此，您可以使用Composition委托实现排序结构。