Remove readonly attribute from directory

Got it finally. ;)

class Program
{
    static void Main(string[] args)
    {
        DirectoryInfo di = new DirectoryInfo("c:\\test");

        FileAttributes f = di.Attributes;

        Console.WriteLine("Directory c:\\test has attributes:");
        DecipherAttributes(f);

    }

    public static void DecipherAttributes(FileAttributes f)
    {
        // To set use File.SetAttributes

        File.SetAttributes(@"C:\test", FileAttributes.ReadOnly);

        if ((f & FileAttributes.ReadOnly) == FileAttributes.ReadOnly)
            Console.WriteLine("ReadOnly");

        // To remove readonly use "-="
        f -= FileAttributes.ReadOnly;

        if ((f & FileAttributes.ReadOnly) == FileAttributes.ReadOnly)
            Console.WriteLine("ReadOnly");
        else
            Console.WriteLine("Not ReadOnly");
    }
}