本文整理汇总了VB.NET中System.Linq.Queryable.GroupJoin方法的典型用法代码示例。如果您正苦于以下问题：VB.NET Queryable.GroupJoin方法的具体用法？VB.NET Queryable.GroupJoin怎么用？VB.NET Queryable.GroupJoin使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。
在下文中一共展示了Queryable.GroupJoin方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: List
Structure Person
Public Name As String
End Structure
Structure Pet
Public Name As String
Public Owner As Person
End Structure
Shared Sub GroupJoinEx1()
Dim magnus As New Person With {.Name = "Hedlund, Magnus"}
Dim terry As New Person With {.Name = "Adams, Terry"}
Dim charlotte As New Person With {.Name = "Weiss, Charlotte"}
Dim barley As New Pet With {.Name = "Barley", .Owner = terry}
Dim boots As New Pet With {.Name = "Boots", .Owner = terry}
Dim whiskers As New Pet With {.Name = "Whiskers", .Owner = charlotte}
Dim daisy As New Pet With {.Name = "Daisy", .Owner = magnus}
Dim people As New List(Of Person)(New Person() {magnus, terry, charlotte})
Dim pets As New List(Of Pet)(New Pet() {barley, boots, whiskers, daisy})
' Create a list where each element is an anonymous
' type that contains a person's name and a collection
' of the names of the pets that are owned by them.
Dim query = _
people.AsQueryable().GroupJoin(pets, _
Function(person) person, _
Function(pet) pet.Owner, _
Function(person, petCollection) _
New With {.OwnerName = person.Name, _
.Pets = petCollection.Select( _
Function(pet) pet.Name)})
Dim output As New System.Text.StringBuilder
For Each obj In query
' Output the owner's name.
output.AppendLine(String.Format("{0}:", obj.OwnerName))
' Output each of the owner's pet's names.
For Each pet As String In obj.Pets
output.AppendLine(String.Format(" {0}", pet))
Next
Next
' Display the output.
MsgBox(output.ToString())
End Sub输出：
Hedlund, Magnus: Daisy Adams, Terry: Barley Boots Weiss, Charlotte: Whiskers