When PictureBox location property is changed the old image is still shown

Question

I have a pictureBox in another pictureBox. I try to create an imitation of flying plane on a map. I made a simple loop to do this task. The code:

for (var i = 0; i < 23; i++)
        {
                Fuel -= 1;
                Changed(i);               
        }

private void Changed(int a)
    {
        Thread.Sleep(350);
        pbPlane1.Location = new Point(525-(25*a), 235);
        pbPlane1.Refresh();
    }

So in this case the plane image is moving as I want but the old images are shown aswell, and I don't want it. I have tried a couple of things but with no results. What is wrong with my code?

It's not clear from your code how you are updating the images. You can use something like this to clear the picturebox. `Graphics graphic = Graphics.fromimage(pictbox.Image); graphic.Clear(Color.Red)//Color to fill the background and reset the box` http://stackoverflow.com/a/5856442/1274820 It's probably a better idea to draw the plane images using the `Graphics.fromImage` method on a bitmap and then use the picturebox to display the bitmap. I would do something like that instead of having a picturebox inside of a picturebox. — user1274820, Jan 20 '16 at 17:53
What if you clear your picturebox before adding the new one? — Just Do It, Jan 20 '16 at 17:58
@JustDoIt I don't really add a new image, I want to simply change its location. If I do `pbPlane1.Image=null` then I won't see my plane — Agasi Mkhitaryan, Jan 20 '16 at 18:03

score 0 · Accepted Answer · answered Jan 20 '16 at 18:11

Instead of refreshing the plane image, you need to refresh the map image. The code should be as follows:

private void Changed(int a)
{
    Thread.Sleep(350);
    pbPlane1.Location = new Point(525-(25*a), 235);
    pbMap1.Refresh();      // refresh the background picturebox
}

When PictureBox location property is changed the old image is still shown

1 Answers1