To demonstrate William's solution, you first need a form with two buttons. One adds controls, the other removes them.
William's example starts out by adding four instances of the class. Each instance is saved in an array indexed by the ID variable. ID is one of the properties of each instance of the class.
The Dim for PB(0) creates the "control array" that will store our unique PictureBoxClass objects. The PBEmpty variable is just a "one time initialization flag" used to start things out right.
Here's the code to start William's demonstration program:
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Dim PB(0) As PictureBoxClass
Dim PBEmpty As Boolean = True
Private Sub Form1_Load(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles MyBase.Load
For a As Integer = 1 To 4
Call AddToPB()
Next a
End Sub
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