void _inputService_KeyDown(object sender, KeyStateEventArgs e)
{
if (e.Key == Key.Up)
_y--;
if (e.Key == Key.Down)
_y++;
if (e.Key == Key.Left)
_x--;
if (e.Key == Key.Right)
_x++;
_y = Math.Max(0, _y);
_y = Math.Min(400, _y);
_x = Math.Max(0, _x);
_x = Math.Min(700, _x);
}
private void OnKeyDown(object sender, KeyStateEventArgs e)
{
}