本文整理汇总了VB.NET中System.Linq.Queryable.Join方法的典型用法代码示例。如果您正苦于以下问题:VB.NET Queryable.Join方法的具体用法?VB.NET Queryable.Join怎么用?VB.NET Queryable.Join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.Join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 JoinEx1()
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})
' Join the list of Person objects and the list of Pet objects
' to create a list of person-pet pairs where each element is
' an anonymous type that contains pet's name and the name of the
' Person object that owns the pet.
Dim query = people.AsQueryable().Join(pets, _
Function(person) person, _
Function(pet) pet.Owner, _
Function(person, pet) _
New With {.OwnerName = person.Name, .Pet = pet.Name})
Dim output As New System.Text.StringBuilder
For Each obj In query
output.AppendLine(String.Format( _
"{0} - {1}", obj.OwnerName, obj.Pet))
Next
' Display the output.
MsgBox(output.ToString())
End Sub
输出:
Hedlund, Magnus - Daisy Adams, Terry - Barley Adams, Terry - Boots Weiss, Charlotte - Whiskers