Why does text drawn on a panel disappear?

Question

I\'m trying to draw a text on a panel(The panel has a background picture).

It works brilliant,but when I minimize and then maximize the application the text is gone.

Answer 1

Just add a handler for the Paint event:

private void panel1_Paint(object sender, PaintEventArgs e)
{
    e.Graphics.DrawString("a", new Font("Tahoma", 5), Brushes.White, new PointF(1, 1));
}