[RESOLVED] Cannot move dropped textbox

[AndreB82]

Dear Gurus,
I have an application where I'm actually moving, with drag and drop, some texboxes in a picturebox.
Now, once dropped, each textbox is becoming locked, in the sense that I cannot further adjust location and move it, while I would like to enable it.

Do you know how can I achieve it? Is there any property in the dropped textbox that I'm missing?

I report here below the implemented code.

Thanks for your support,
A.

Private Sub Form11_Load(sender As Object, e As EventArgs) Handles Me.Load
        PictureBox3.AllowDrop = True

    End Sub


    Private Sub PictureBox3_DragDrop(sender As Object, e As DragEventArgs) Handles PictureBox3.DragDrop

        Dim tb As TextBox = DirectCast(e.Data.GetData(GetType(TextBox)), TextBox)
        Dim t1 As New TextBox

        t1.Location = New Point(MyPanel2.PointToClient(Control.MousePosition).X - Me.PictureBox3.Left,
                                MyPanel2.PointToClient(Control.MousePosition).Y - Me.PictureBox3.Top)
        t1.Text = tb.Text
        t1.Font = tb.Font
        t1.TextAlign = HorizontalAlignment.Center
        t1.ForeColor = tb.ForeColor
        t1.BackColor = tb.BackColor

        PictureBox3.Controls.Add(t1)

    End Sub

    Private Sub PictureBox3_DragEnter(sender As Object, e As DragEventArgs) Handles PictureBox3.DragEnter
        If e.Data.GetDataPresent(GetType(TextBox)) And CBool(e.KeyState And 8) Then
            e.Effect = DragDropEffects.Copy
        Else
            e.Effect = DragDropEffects.None
        End If
    End Sub

    Private Sub TextBox9_MouseDown(sender As Object, e As MouseEventArgs) Handles TextBox9.MouseDown
        TextBox9.DoDragDrop(TextBox9, DragDropEffects.Copy)
    End Sub

    Private Sub TextBox10_MouseDown(sender As Object, e As MouseEventArgs) Handles TextBox10.MouseDown
        TextBox10.DoDragDrop(TextBox10, DragDropEffects.Copy)
    End Sub