//Get data from database, then sort list by staff name:

List<StaffMember> staffList = staffHandler.GetStaffMembers();

var sortedList = from staffmember in staffList
                 orderby staffmember.Name ascending
                 select staffmember;

var obj = db.Items.Where...

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

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));

我只是想回到问题上来。如果您要对该序列的列表进行排序，请选择“1”“10”“100”“200”“2”“20”“3”“30”“300”，然后按照表单1获取排序项目；2.3.10;20;30;100;200;300你可以使用这个：

 public class OrderingAscending : IComparer<String>
    {
        public int Compare(String x, String y)
        {
            Int32.TryParse(x, out var xtmp);
            Int32.TryParse(y, out var ytmp);

            int comparedItem = xtmp.CompareTo(ytmp);
            return comparedItem;
        }
    }

您可以在以下形式的代码隐藏中使用它：

 IComparer<String> comparerHandle = new OrderingAscending();
 yourList.Sort(comparerHandle);

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（）

//Get data from database, then sort list by staff name:

List<StaffMember> staffList = staffHandler.GetStaffMembers();

var sortedList = from staffmember in staffList
                 orderby staffmember.Name ascending
                 select staffmember;