FileStream fs = new FileStream(pdfpath,FileMode.Open,FileAccess.Read);
                    byte[] fileCount = new byte[fs.Length];
                    fs.Read(fileCount, 0, fileCount.Length);
                    fs.Close();
                    Decrypt(ref fileCount);
                    axFoxitPDFSDK1.OpenBuffer(fileCount, fileCount.Length, "");