下面是一个通用LINQ扩展方法，它不会创建列表的额外副本：

public static void Sort<T,U>(this List<T> list, Func<T, U> expression)
    where U : IComparable<U>
{
    list.Sort((x, y) => expression.Invoke(x).CompareTo(expression.Invoke(y)));
}

要使用它：

myList.Sort(x=> x.myProperty);

我最近构建了另一个接受ICompare＜U＞的插件，以便您可以自定义比较。当我需要进行自然字符串排序时，这很有用：

public static void Sort<T, U>(this List<T> list, Func<T, U> expression, IComparer<U> comparer)
    where U : IComparable<U>
{    
    list.Sort((x, y) => comparer.Compare(expression.Invoke(x), expression.Invoke(y)));
}

//用于网格视图的完全通用排序

public List<T> Sort_List<T>(string sortDirection, string sortExpression, List<T> data)
    {

        List<T> data_sorted = new List<T>();

        if (sortDirection == "Ascending")
        {
            data_sorted = (from n in data
                              orderby GetDynamicSortProperty(n, sortExpression) ascending
                              select n).ToList();
        }
        else if (sortDirection == "Descending")
        {
            data_sorted = (from n in data
                              orderby GetDynamicSortProperty(n, sortExpression) descending
                              select n).ToList();

        }

        return data_sorted;

    }

    public object GetDynamicSortProperty(object item, string propName)
    {
        //Use reflection to get order type
        return item.GetType().GetProperty(propName).GetValue(item, null);
    }

//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));

使用LINQ

objListOrder = GetOrderList()
                   .OrderBy(o => o.OrderDate)
                   .ToList();

objListOrder = GetOrderList()
                   .OrderBy(o => o.OrderId)
                   .ToList();

订购列表的最简单方法是使用OrderBy

 List<Order> objListOrder = 
    source.OrderBy(order => order.OrderDate).ToList();

如果要按多个列排序，如以下SQL查询。

ORDER BY OrderDate, OrderId

要实现这一点，您可以像下面这样使用ThenBy。

  List<Order> objListOrder = 
    source.OrderBy(order => order.OrderDate).ThenBy(order => order.OrderId).ToList();