Question

I have a simple Form such as the following:

using System; using System.Drawing; using System.Windows.Forms;  namespace PaintTest {    class PaintTest : Form    {       int _counter = 0;        [STAThread]       static void Main()       {          Application.Run(new PaintTest());       }        protected override void OnPaint(PaintEventArgs e)       {          e.Graphics.DrawString(_counter.ToString(), new Font(FontFamily.GenericSerif, 10.0f), Brushes.Blue, 10.0f, 10.0f);          _counter++;       }    } } 

When the window is resized, the counter doesn’t appear to update on the screen, even though OnPaint() is getting called and the counter incremented. How do I make the Form repaint itself as the window is resized?

Answer 1

Add the following to your class, e.g. in its constructor:

SetStyle(ControlStyles.ResizeRedraw, true);