How do I make it go left instead of right with a stopping point?

问题

Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
    'Timer run from left to right to the number of input
     PictureBox1.Location = New Point(PictureBox1.Location.X + TextBox1.Text, PictureBox1.Location.Y)
End Sub

This is going right with no stopping point.

回答1:

What about subtracting that TextBox value from the previous X position instead of adding it?

Adding to an X coordinate will move the picture to the right, of course.

来源：https://stackoverflow.com/questions/49216068/how-do-i-make-it-go-left-instead-of-right-with-a-stopping-point