iTextSharp.text.pdf.PdfResourceFileCache.Get C# (CSharp) Метод

        public static byte[] Get(string key)
        {
            byte[] ret = null;
            s_Cache.TryGetValue(key, out ret);
            return ret;
        }

        public RandomAccessFileOrArray(string filename, bool forceRead)
        {
            var cachedBytes = PdfResourceFileCache.Get(filename);

            if (cachedBytes != null)
            {
                ArrayIn = cachedBytes;
                return;
            }

            if (!File.Exists(filename))
            {
                if (filename.StartsWith("file:/", StringComparison.OrdinalIgnoreCase) ||
                    filename.StartsWith("http://", StringComparison.OrdinalIgnoreCase) ||
                    filename.StartsWith("https://", StringComparison.OrdinalIgnoreCase))
                {
                    var isp = filename.GetResponseStream();
                    try
                    {
                        ArrayIn = InputStreamToArray(isp);
                        return;
                    }
                    finally
                    {
                        try { isp.Dispose(); } catch { }
                    }
                }
                else
                {
                    //Stream isp = BaseFont.GetResourceStream(filename);
                    Stream isp = null;
                    if ("-".Equals(filename))
                    {
                        isp = ((StreamReader)Console.In).BaseStream;
                    }
                    else
                    {
                        isp = BaseFont.GetResourceStream(filename);
                    }

                    if (isp == null)
                    {
                        throw new IOException(filename + " not found as file or resource.");
                    }

                    try
                    {
                        ArrayIn = InputStreamToArray(isp);
                        return;
                    }
                    finally
                    {
                        try { isp.Dispose(); } catch { }
                    }
                }
            }
            else if (forceRead)
            {
                Stream s = null;
                try
                {
                    s       = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read);
                    ArrayIn = InputStreamToArray(s);
                }
                finally
                {
                    try { if (s != null)
                          {
                              s.Dispose();
                          }
                    } catch { }
                }
                return;
            }
            Filename = filename;
            Rf       = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read);
        }