LINQ - 无法弄清楚对分组数据进行排序

Question

我有一组Person pocos，填充如下。我正在尝试按省按字母顺序显示它们，然后按省内的LastName显示。我正在使用分组，我可以将省份整理好，只是不确定如何在省内的人群中订购。

此代码：

Person[] people = new Person[]
{
    new Person() { FirstName = "Tony", LastName = "Montana", Age = 39, HomeProvince = "Ontario" },
    new Person() { FirstName = "Bill", LastName = "Smith", Age = 23, HomeProvince = "Ontario" },
    new Person() { FirstName = "Jane", LastName = "Doe", Age = 23, HomeProvince = "Alberta" },
    new Person() { FirstName = "John", LastName = "Doe", Age = 23, HomeProvince = "Alberta" },
    new Person() { FirstName = "Alex", LastName = "DeLarge", Age = 19, HomeProvince = "British Columbia" },
    new Person() { FirstName = "Travis", LastName = "Bickle", Age = 42, HomeProvince = "Quebec" },
    new Person() { FirstName = "Ferris", LastName = "Beuller", Age = 17, HomeProvince = "Manitoba" },
    new Person() { FirstName = "Maggie", LastName = "May", Age = 23, HomeProvince = "Ontario" },
    new Person() { FirstName = "Mickey", LastName = "Mouse", Age = 93, HomeProvince = "Alberta" },
    new Person() { FirstName = "Frank", LastName = "Darabont", Age = 49, HomeProvince = "Ontario" }
};

var query =
    from person in people
    group person by person.HomeProvince into g
    orderby g.Key
    select new { Province = g.Key, People = g };

foreach (var prov in query)
{
    Console.WriteLine("{0}: ", prov.Province);
    foreach (var person in prov.People)
    {
        Console.WriteLine("  {0} {1}, {2}", person.FirstName, person.LastName, person.Age);
    }
}

给我这个输出：

Alberta:
  Jane Doe, 23
  John Doe, 23
  Mickey Mouse, 93
British Columbia:
  Alex DeLarge, 19
Manitoba:
  Ferris Beuller, 17
Ontario:
  Tony Montana, 39
  Bill Smith, 23
  Maggie May, 23
  Frank Darabont, 49
Quebec:
  Travis Bickle, 42

正如您所看到的，省份按字母顺序排列，但我如何列出省内的人（即安大略省我想要这个订单：Darabont，Montana，May，Smith）。

Answer 1

假设您想要LastName的字母顺序，请更改此：

select new { Province = g.Key, People = g };

为：

select new { Province = g.Key, People = g.OrderBy(p => p.LastName) };

但请注意，您的示例“Darabont，Montana，May，Smith”并不完全按字母顺序排列。我认为这只是你的错误，但如果这实际上是你想要的订单，请解释你用来生成这个订单的规则。

Answer 2

应该能够在select语句之后到orderby（person =＆gt; person.LastName）;