Imports System

Imports System.Collections.Generic

Imports System.Linq

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Public Module Module1

    Public Sub Main()

        dim things = new List(Of DataItem)

        things.Add(new DataItem() With { .ItemData1 = "This", .ItemData2 = "Is", .ItemData3 = "Cool"})

        things.Add(new DataItem() With { .ItemData1 = "This", .ItemData2 = "Are", .ItemData3 = "Nifty"})

        things.Add(new DataItem() With { .ItemData1 = "These", .ItemData2 = "Be", .ItemData3 = "Gnarly"})

        dim groupThings = things.GroupBy(function(x) x.ItemData1)

        dim i = 0

        For Each groupItem in groupThings

            ' We Have The Group!

            Console.WriteLine($"Group {i}: {groupItem.Key}")

            For Each item in groupItem

            Console.WriteLine($" | ItemData2: {item.ItemData2} | ItemData3: {item.ItemData3}")

            Next

            i += 1

        Next

    End Sub

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        Public Class DataItem

            Public Property ItemData1 as String

            Public Property ItemData2 as String

            Public Property ItemData3 as String

        End Class

End Module

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