Avoid Flickering in Windows Forms?

Question

Double buffering not working with combo-box. is there any another methods to avoid flickering in windows forms?

i have one windows form with number of panels in it.

Answer 1

Solution #1:
Use ComboxBox.BeginUpdate() before you add items. This will prevent the Control from repainting the ComboBox each time an item is added to the list. After adding the items, you can use ComboBox.EndUpdate() to repaint.

Solution #2

private void EnableDoubleBuffering()
{
    this.SetStyle(ControlStyles.OptimizedDoubleBuffer | ControlStyles.UserPaint | ControlStyles.AllPaintingInWmPaint, true);
}