Question

I have four PictureBoxes (each PictureBox represents one dice) and a Timer that changes every 100ms source pictures (loaded in memory as List<Bitmap> imagesLoadedFromIncludedResources).

Code:

private List<PictureBox> dices = new List<PictureBox>();

private void timer_diceImageChanger_Tick(object sender, EventArgs e)
{
    foreach (PictureBox onePictureBox in dices)
    {
        oneDice.WaitOnLoad = false;
        onePictureBox.Image = //... ;
        oneDice.Refresh();
    }
}  

I need to change all the images at once – at this moment, you can see that the images are changing from left to right with a small delay.

I tried variant with one Thread for each PictureBox (using Control.Invoke method from this answer) – it is visually little better but not perfect.

Answer 1

You can try to suspend form’s layout logic:

SuspendLayout();
// set images to pictureboxes
ResumeLayout(false);