2 tane timer gerek..

timer 1 in Enabled Ozelliği True
Timer1 İn İntervali =1
tierm 2 in Enabled Ozelliği False
Timer2 İn İntervali =1

timer 1 cift tıkla
Top = Top - 3
Timer2.Enabled = True
Timer1.Enabled = False

timer2 i cift tıkla
Top = Top + 3
Timer1.Enabled = True
Timer2.Enabled = False

Thi3f senin icindi bu...
__________________