Spire.Pdf打印PDF文件

　　　　　/// <summary>
        /// Spire.Pdf打印PDF文件
        /// </summary>
        /// <param name="fileName">包含文件路徑的文件名稱</param>
        /// <returns></returns>
        private int PrintPDF(string fileName)
        {
            int result=0;
            try
            {
                using (PdfDocument pd = new PdfDocument())
                {
                    //加載一個文檔
                    pd.LoadFromFile(fileName);
                    //設置完成打印時的觸發事件
                    //pd.PrintDocument.EndPrint += new PrintEventHandler();
                    //設置紙張規格
                    PrintDocument printDocument = new PrintDocument();
                    foreach (PaperSize ps in printDocument.PrinterSettings.PaperSizes)
                    {
                        if (ps.PaperName == "A4")
                            pd.PrintDocument.DefaultPageSettings.PaperSize = ps;
                    }
                    //指定打印機名稱
                    pd.PrinterName = "PrinterName";
                    //設置為縱向打印
                    pd.PrintDocument.DefaultPageSettings.Landscape = false;
                    //設置為靜默打印
                    pd.PrintDocument.PrintController = new StandardPrintController();
                    //執行打印
                    pd.PrintDocument.Print();
                }
                return result;
            }
            catch (Exception ex)
            {

                throw;
                return result = -1;
            }
        }