VB.NET链接队列按多个字段分组-仍会生成重复项

' 假设我们有一个名为Person的类，具有FirstName和LastName属性
Public Class Person
    Public Property FirstName As String
    Public Property LastName As String
End Class

' 创建一个Person对象的队列
Dim people As New Queue(Of Person)()

' 添加一些Person对象到队列中
people.Enqueue(New Person() With {.FirstName = "John", .LastName = "Doe"})
people.Enqueue(New Person() With {.FirstName = "Jane", .LastName = "Smith"})
people.Enqueue(New Person() With {.FirstName = "John", .LastName = "Smith"})

' 使用LINQ查询来链接队列并按多个字段分组
Dim groupedPeople = From p In people
                    Group By p.FirstName, p.LastName Into Group

' 遍历分组后的结果并输出
For Each group In groupedPeople
    Console.WriteLine("Group: {0} {1}", group.FirstName, group.LastName)
    For Each person In group.Group
        Console.WriteLine("Person: {0} {1}", person.FirstName, person.LastName)
    Next
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