unity調用打印機打印

/// <summary>
    /// 打印
    /// </summary>
    public void PrintFile()
    {
        PrintDocument pri = new PrintDocument();
        pri.PrintPage += Printpagetest;
        pri.Print();
    }

    private void Printpagetest(object sender, PrintPageEventArgs e)
    {
        try
        {
            System.Drawing.Image image = System.Drawing.Image.FromFile(printPath);
            System.Drawing.Graphics g = e.Graphics;
            g.TranslateTransform(_4AHeight, 0);
            g.RotateTransform(90);
            g.DrawImage(image, 0, 0, _4AWidth, _4AHeight);
        }
        catch (Exception ee)
        {
            Debug.LogError(ee.Message);
        }
    }