C# 如何使用LINQ按降序获取数据

我有下面的LINQ查询，我希望数据按照totalPopulation的降序排列

var query = from u in xdoc.Root.Elements(ns + "DetailedUtility")
            select new
            {
                UtilityId = (int)u.Attribute("UtilityId"),
                TotalPopulation = u.Elements(ns + "City")
                                   .Sum(c => (int)c.Attribute("Population"))
            };

如何按降序获取列表。 请帮忙

var query = (from u in xdoc.Root.Elements(ns + "DetailedUtility")
            select new
            {
                UtilityId = (int)u.Attribute("UtilityId"),
                TotalPopulation = u.Elements(ns + "City")
                                   .Sum(c => (int)c.Attribute("Population"))
            }).OrderByDescending(x => x.TotalPopulation);

或

或

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哈，看来是@MarchinJuraszek打败了我。哦，好吧，看来是@MarchinJuraszek打败了我。哦，好吧。@Coelho，这个问题看起来更多的是关于错误的故障排除，而不是关于如何实现降序。@Coelho，这个问题看起来更多的是关于错误的故障排除，而不是关于如何实现降序。

var query = from u in xdoc.Root.Elements(ns + "DetailedUtility")
            let population = u.Elements(ns + "City")
                              .Sum(c => (int)c.Attribute("Population"))
            orderby population descending
            select new
            {
                UtilityId = (int)u.Attribute("UtilityId"),
                TotalPopulation = population
            };

var query = (from u in xdoc.Root.Elements(ns + "DetailedUtility")
            select new
            {
                UtilityId = (int)u.Attribute("UtilityId"),
                TotalPopulation = u.Elements(ns + "City")
                                   .Sum(c => (int)c.Attribute("Population"))
            }).OrderByDescending(x => x.TotalPopulation);