Select with Function : Select « LINQ « VB.Net

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Select with Function

 



Imports System

Imports System.Linq

Imports System.Collections.Generic

    Structure Pet

        Public Name As String

        Public Age As Integer

    End Structure





Public Class Example



    Public Shared Sub Main() 

        Dim cats() As Pet = {New Pet With {.Name = "A", .Age = 8}, _

                             New Pet With {.Name = "B", .Age = 4}, _

                             New Pet With {.Name = "C", .Age = 1}}



        Dim dogs() As Pet = {New Pet With {.Name = "D", .Age = 3}, _

                             New Pet With {.Name = "E", .Age = 14}, _

                             New Pet With {.Name = "F", .Age = 9}}



        Dim animals() As IEnumerable(Of Pet) = {cats, dogs}



        Dim query As IEnumerable(Of String) = (animals.SelectMany(Function(pets) pets.Select(Function(pet) pet.Name)))



        For Each name As String In query

            Console.WriteLine(name)

        Next





    End Sub

End Class

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