boyut,yazı ve renk için all controls

Public Class Form1
Dim yukselt, renk, yazı As Control


Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
For Each renk In Controls

renk.BackColor = Color.Red

Next renk
End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
For Each yukselt In Controls
yukselt.Width = 80
yukselt.Height = 40
Next
End Sub

Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
For Each yazı In Controls

yazı.Text = "eiu"
Next
End Sub
End Class