move a icon(bitmap) in a certain range
I have a icon picsmall . It should move in y axis in a certain range . I wrote a code but when it move upwards in a predefine value it never move again when I move the icon downwards , what should I do ?? here is the code :
private void picSmall_MouseDown(object sender, MouseEventArgs e)
{
drag = true;
y_down = e.Y;
picsmall.Image = imageList1.Images[0];
}
private void picSmall_MouseMove(object sender, MouseEventArgs e)
{
int co;
if (drag)
{
if (picsmall.Top> 30) //30 is the max value
{
co = picsmall.Top;
picsmall.Top += (e.Y - y_down);
}
else if (picsmall.Top == 30)
{
co = 30;
co += (e.Y - y_down);
}
}
private void picSmall_MouseUp(object sender, MouseEventArgs e)
{
drag = false;
}