how to stop flickering C# winforms

Question

I have a program that is essentially like a paint application. However, my program has some flickering issues. I have the following line in my code (which should get rid of

Answer 1

I know this is really old question but maybe someone will find it useful.
I'd like to make little enhancement to viper's answer.

You can make simple extension to Panel class and hide setting property through reflection.

public static class MyExtensions {

    public static void SetDoubleBuffered(this Panel panel) {
        typeof(Panel).InvokeMember(
           "DoubleBuffered",
           BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.SetProperty,
           null,
           panel,
           new object[] { true });
    }
}

If your Panel variable's name is myPanel you can just call
myPanel.SetDoubleBuffered();
and that's it. Code looks much cleaner.