Windows Forms: using BackgroundImage slows down drawing of the Form's controls

Question

I have a Windows Form (C# .NET 3.5) with a number of buttons and other controls on it, all assigned to a topmost Panel which spans the whole Form. For example, the hierarchy

Answer 1

Another very simple way to avoid permanent redraws while adding your controls is to make the parent control invisible before you add controls to it. Afterwards you make the parent control (for example, a panel) visible and there it is without all those repaints. :-)

panelParent.visible = false;

for(...) {
    // Add your controls here:
    panelParent.Controls.Add(...);
}

panelParent.visible = true;