private void createFile(string fileName)
{
Bitmap flag = new Bitmap(10, 10);
for(int x = 0; x < flag.Height; ++x)
{
for(int y = 0; y < flag.Width; ++y)
{
flag.SetPixel(x, y, Color.White);
}
}
for(int x = 0; x < flag.Height; ++x)
{
flag.SetPixel(x, x, Color.Red);
}
FileStream fs = File.Create(fileName);
fs.Close();
fs.Dispose();
flag.Save(fileName);
}