Finally Visual Basic Dot Net supports Yield statement.

Really, I'm glad Finally Visual Basic Dot Net supports Yield statement.

No more pain with Custom Collection.

1- Start a windows Form Project
2- Add ListBox control to the Form
3- Use the code as follows

Public Class Form1

    Private ColorCollection As ICollection(Of KnownColor) = New List(Of KnownColor) From {KnownColor.Aqua, KnownColor.Red, KnownColor.Black}

    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        For Each clr As KnownColor In KnowncolorItreator()
            ListBox1.Items.Add(clr)
        Next
    End Sub

    Public Iterator Function KnowncolorItreator() As IEnumerable(Of KnownColor)
        For Each clr As KnownColor In ColorCollection
            Yield clr
        Next
    End Function

End Class

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