iTextSharp.text.pdf.RandomAccessFileOrArray.RandomAccessFileOrArray C# (CSharp) Метод

        public RandomAccessFileOrArray(String filename, bool forceRead)
        {
            if (!File.Exists(filename)) {
                if (filename.StartsWith("file:/") || filename.StartsWith("http://") || filename.StartsWith("https://")) {
                    WebRequest wr = WebRequest.Create(new Uri(filename));
                    wr.Credentials = CredentialCache.DefaultCredentials;
                    Stream isp = wr.GetResponse().GetResponseStream();
                    try {
                        this.arrayIn = InputStreamToArray(isp);
                        return;
                    }
                    finally {
                        try {isp.Close();}catch{}
                    }
                }
                else {
                    Stream isp = BaseFont.GetResourceStream(filename);
                    if (isp == null)
                        throw new IOException(MessageLocalization.GetComposedMessage("1.not.found.as.file.or.resource", filename));
                    try {
                        this.arrayIn = InputStreamToArray(isp);
                        return;
                    }
                    finally {
                        try {isp.Close();}catch{}
                    }
                }
            }
            else if (forceRead) {
                Stream s = null;
                try {
                    s = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read);
                    this.arrayIn = InputStreamToArray(s);
                }
                finally {
                    try{if (s != null) s.Close();}catch{}
                }
                return;
            }
            this.filename = filename;
            rf = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read);
        }