codice:
Public Class Form1
    Dim Textbox1 As New TextBox

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Textbox1.Width = 'larghezza in pixel
Textbox1.Height = 'altezza in pixel
Textbox1.Top = 'distanza dal bordo superiore del Form in pixel
Textbox1.Left = 'distanza dal bordo sinistro del Form in pixel

    End Sub
End Class