WCF技术内幕 第5章 (3)

使用XmlDictionary

            using (MemoryStream stream = new MemoryStream())            {                using (XmlDictionaryWriter xtw = XmlDictionaryWriter.CreateBinaryWriter(stream, null, null))                {                    xtw.WriteElementString("Person", "urn:Andersoft", "Mike");                    xtw.Flush();                    Console.WriteLine("XmlDictionaryWriter wrote {0} bytes", stream.Position); //29                    stream.Position = 0;                    Byte[] bytes = stream.ToArray();                    File.WriteAllText(@"c:\file.txt", BitConverter.ToString(bytes));                    //40-06-50-65-72-73-6F-6E-08-0D-75-72-6E-3A-41-6E-64-65-72-73-6F-66-74-99-04-4D-69-6B-65                    File.WriteAllText(@"c:\file1.txt", new StreamReader(stream).ReadToEnd());                    //@Person                    //urn:Andersoft?Mike                }            }

没有使用XMLDictionary压缩过的二进制编码要29个byte，比用XMLDictionary压缩过的二进制编码byte数多了19个。。。

如果使用XMLDictionary，它会直接记录element和attribute的值，但是会把stream中的element name和XML namespaces替换成单个字节。