在Windows Mobile 6.1中序列化

本文关键字：序列化 Windows Mobile | 更新日期: 2023-09-27 17:49:54

我有一个要序列化的XML文档，但是它花费了很长时间。在Windows Mobile 6.1 Pro上是否存在导致序列化非常缓慢的限制?对于一个16Kb的字符串，我得到的时间是1-1.5 (s)。

使用。net CF 3.5序列化到RAM。

serializer = new XmlSerializer(typeof(Request_PrintInfo));
"<?xml version='"1.0'" encoding='"utf-8'"?>"
        "<Request_TestSale xmlns:xsi='"http://www.w3.org/2001/XMLSchema-instance'" xmlns:xsd='"http://www.w3.org/2001/XMLSchema'">"
        "  <Product>"
        "    <Ref>1</Ref>"
        "    <Name>Product 1</Name>"
        "    <ShortName>P1</ShortName>"
        "    <Abbreviation>P.1</Abbreviation>"
        "    <Id>494a8011-16a0-46ff-980f</Id>"
        "    <Attribs>"
        "      <ConfigAttribute>"
        "        <Name>price</Name>"
        "        <Required>false</Required>"
        "        <ReadOnly>true</ReadOnly>"
        "        <Value>200</Value>"
        "      </ConfigAttribute>"
        "      <ConfigAttribute>"
        "        <Name>Quantity</Name>"
        "        <Required>true</Required>"
        "        <ReadOnly>true</ReadOnly>"
        "        <Value>1</Value>"
        "      </ConfigAttribute>"
        "    </Attribs>"
        "  </Product>"
        "</Request_TestSale>"

在Windows Mobile 6.1中序列化

XmlSerializer相对很慢。我建议考虑直接使用xmltextwwriter来序列化你的对象。

代码会更复杂，但速度会更快，占用的内存也会更少——这两点在移动设备上通常是非常重要的。

好的，这是我看到的:

private void DoNotUnderstandThis() {
  var serializer = new System.Xml.Serialization.XmlSerializer(typeof(Request_PrintInfo));
  string data = "<?xml version='"1.0'" encoding='"utf-8'"?>" +
     "<Request_TestSale xmlns:xsi='"http://www.w3.org/2001/XMLSchema-instance'" xmlns:xsd='"http://www.w3.org/2001/XMLSchema'">" +
     "  <Product>" +
     "    <Ref>1</Ref>" +
     "    <Name>Product 1</Name>" +
     "    <ShortName>P1</ShortName>" +
     "    <Abbreviation>P.1</Abbreviation>" +
     "    <Id>494a8011-16a0-46ff-980f</Id>" +
     "    <Attribs>" +
     "      <ConfigAttribute>" +
     "        <Name>price</Name>" +
     "        <Required>false</Required>" +
     "        <ReadOnly>true</ReadOnly>" +
     "        <Value>200</Value>" +
     "      </ConfigAttribute>" +
     "      <ConfigAttribute>" +
     "        <Name>Quantity</Name>" +
     "        <Required>true</Required>" +
     "        <ReadOnly>true</ReadOnly>" +
     "        <Value>1</Value>" +
     "      </ConfigAttribute>" +
     "    </Attribs>" +
     "  </Product>" +
     "</Request_TestSale>";
}

我真的不明白你是如何把上面的字符串变成XML文档的。然而，就像Ran说的，你应该看看XmlTextWriter。

使用你的字符串数据，我会写这样的东西(未经测试): 
private const string CRLF = "'r'n";
private const string CRLFTAB = "'r'n't";
private const string CRLFTABTAB = "'r'n't't";
private const string CRLFTABTABTAB = "'r'n't't";
private object writeLock = new object();
private void WriteToXml(string filename) {
  lock (writeLock) {
    using (FileStream stream = File.Open(filename, FileMode.Append, FileAccess.Write, FileShare.Read)) {
      using (XmlTextWriter xw = new XmlTextWriter(stream, Encoding.UTF8)) {
        xw.WriteStartElement("Product"); // writes the root
        {
          xw.WriteWhitespace(CRLFTAB);
          xw.WriteElementString("Ref", "1");
          xw.WriteWhitespace(CRLFTAB);
          xw.WriteElementString("Name", "Product 1");
          xw.WriteWhitespace(CRLFTAB);
          xw.WriteElementString("ShortName", "P1");
          xw.WriteWhitespace(CRLFTAB);
          xw.WriteElementString("Abbreviation", "P.1");
          xw.WriteWhitespace(CRLFTAB);
          xw.WriteElementString("Id", "494a8011-16a0-46ff-980f");
          xw.WriteWhitespace(CRLFTAB);
          xw.WriteStartElement("Attribs");
          {
            xw.WriteWhitespace(CRLFTABTAB);
            xw.WriteStartElement("ConfigAttribute");
            {
              xw.WriteWhitespace(CRLFTABTABTAB);
              xw.WriteElementString("Name", "price");
              xw.WriteWhitespace(CRLFTABTABTAB);
              xw.WriteElementString("Required", "false");
              xw.WriteWhitespace(CRLFTABTABTAB);
              xw.WriteElementString("ReadOnly", "true");
              xw.WriteWhitespace(CRLFTABTABTAB);
              xw.WriteElementString("Value", "200");
              xw.WriteWhitespace(CRLFTABTABTAB);
            }
            xw.WriteEndElement(); // Write the close tag for the ConfigAttribute element
            xw.WriteWhitespace(CRLFTABTAB);
            xw.WriteWhitespace(CRLFTABTAB);
            xw.WriteStartElement("ConfigAttribute");
            {
              xw.WriteWhitespace(CRLFTABTABTAB);
              xw.WriteElementString("Name", "Quantity");
              xw.WriteWhitespace(CRLFTABTABTAB);
              xw.WriteElementString("Required", "true");
              xw.WriteWhitespace(CRLFTABTABTAB);
              xw.WriteElementString("ReadOnly", "true");
              xw.WriteWhitespace(CRLFTABTABTAB);
              xw.WriteElementString("Value", "1");
              xw.WriteWhitespace(CRLFTABTABTAB);
            }
            xw.WriteEndElement(); // Write the close tag for the ConfigAttribute element
            xw.WriteWhitespace(CRLFTABTAB);
          }
          xw.WriteEndElement(); // Write the close tag for the Attribs element
          xw.WriteWhitespace(CRLF);
        }
        xw.WriteEndElement(); // Write the close tag for the root element
        xw.WriteWhitespace(CRLF);
        xw.Flush();
        xw.Close();
      }
      stream.Close();
    }
  }
}

希望这能让你有所收获。我甚至不确定这是否是你想要的

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