public void Clear ()
{
Coord coord = new Coord ();
ConsoleScreenBufferInfo info = new ConsoleScreenBufferInfo ();
GetConsoleScreenBufferInfo (outputHandle, out info);
int size = info.Size.X * info.Size.Y;
int written;
FillConsoleOutputCharacter (outputHandle, ' ', size, coord, out written);
GetConsoleScreenBufferInfo (outputHandle, out info);
FillConsoleOutputAttribute (outputHandle, info.Attribute, size, coord, out written);
SetConsoleCursorPosition (outputHandle, coord);
}