XmlTextWriter的使用日记

使用XmlTextWriter生成如下一个xml：

<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<Pkboy kind="site">
  <command name="price" object="game" password="asdfasdf">
    <game name="魔兽世界">
      <server name="魔兽服务器一号">
        <item name="金币" kind="gold" quantity="12" gross="0.5005" maxdollar="99" mindollar="88" rate="6.88" />
      </server>
    </game>
  </command>
</Pkboy>

使用的代码：

public static string GeneratePriceXml(PriceStruct ps, Encoding encode)
 {
            string xml = string.Empty;

            using (MemoryStream ms = new MemoryStream())
            {
                using (XmlTextWriter xtw = new XmlTextWriter(ms, encode))
                {
                    xtw.Formatting = Formatting.Indented;
                    //xtw.Indentation = 2;

                    xtw.WriteStartDocument(true);

                    //Pkboy node
                    xtw.WriteStartElement("Pkboy");
                    xtw.WriteAttributeString("kind", "site");
                    //command node
                    xtw.WriteStartElement("command");
                    xtw.WriteAttributeString("name", "price");
                    xtw.WriteAttributeString("object", "game");
                    xtw.WriteAttributeString("password", ps.password);

                    //game node
                    xtw.WriteStartElement("game");
                    xtw.WriteAttributeString("name", ps.gameName);

                    // server node
                    xtw.WriteStartElement("server");
                    xtw.WriteAttributeString("name", ps.serverName);

                    // item node
                    xtw.WriteStartElement("item");
                    xtw.WriteAttributeString("name", ps.itemName);
                    xtw.WriteAttributeString("kind", ps.itemKind);
                    xtw.WriteAttributeString("quantity", ps.quantity.ToString());
                    xtw.WriteAttributeString("gross", ps.gross.ToString());
                    xtw.WriteAttributeString("maxdollar", ps.maxDollar.ToString());
                    xtw.WriteAttributeString("mindollar", ps.minDollar.ToString());
                    xtw.WriteAttributeString("rate", ps.rate.ToString());

                    // colse item node
                    xtw.WriteEndElement();
                    // close server node
                    xtw.WriteEndElement();
                    // close game node
                    xtw.WriteEndElement();
                    // close command node
                    xtw.WriteEndElement();
                    // close pkboy node
                    xtw.WriteEndElement();
                    // close document
                    xtw.WriteEndDocument();

                    xtw.Flush();
                    xml = encode.GetString(ms.GetBuffer(), 0, (int)ms.Length);
                }               
            }
            return xml;
 }

产生xml 如下格式：

<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<Pkboy kind="result">
  <result success="false">
    <data>this is result data</data>
    <error kind="DatabaseError">
      <message>数据库链接失败</message>
    </error>
  </result>
</Pkboy>

采用代码：

public static string GenerateResultXml(ResultStruct rs, Encoding encode)
 {
            string xml = string.Empty;

            using (MemoryStream ms = new MemoryStream())
            {
                using (XmlTextWriter xtw = new XmlTextWriter(ms, encode))
                {
                    xtw.Formatting = Formatting.Indented;

                    xtw.WriteStartDocument(true);

                    //Pkboy node
                    xtw.WriteStartElement("Pkboy");
                    xtw.WriteAttributeString("kind", "result");

                    //result node                    
                    xtw.WriteStartElement("result");
                    if (rs.success)
                    {
                        xtw.WriteAttributeString("success", "true");
                    }
                    else
                    {
                        xtw.WriteAttributeString("success", "false");
                    }

                    //data node
                    xtw.WriteStartElement("data");
                    xtw.WriteValue(rs.data);
                    xtw.WriteEndElement();

                    // error node
                    xtw.WriteStartElement("error");
                    xtw.WriteAttributeString("kind", Enum.GetName(typeof(ErrorKind), rs.errorKind));

                    // message node
                    xtw.WriteStartElement("message");
                    xtw.WriteValue(rs.errorMessage);
                    xtw.WriteEndElement();

                    // close error node
                    xtw.WriteEndElement();

                    // close result node
                    xtw.WriteEndElement();
                    
                    // close document
                    xtw.WriteEndDocument();

                    xtw.Flush();
                    xml = encode.GetString(ms.GetBuffer(), 0, (int)ms.Length);
                }
            }
            return xml;
        }