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//添加CDATA節(jié)點(diǎn)數(shù)據(jù)至XML文件

<?xml version="1.0" encoding="UTF-8"?>

<rss version="2.0">

   <channel>

       <title>Pay LessFor More</title>

      <link>http://paylessformore</link>

       <description>PayLess For MoreHomepage</description>

       <content>

       </content>

   </channel>

</rss>

       public asyncTask<XmlDocument> LoadXmlFile(Stringfolder, String file)

       {

          StorageFolder storageFolder = awaitPackage.Current.InstalledLocation.GetFolderAsync(folder);

          StorageFile storageFile = awaitstorageFolder.GetFileAsync(file);

          XmlLoadSettings loadSettings = new XmlLoadSettings();

          loadSettings.ProhibitDtd = false;

          loadSettings.ResolveExternals = false;

           returnawait XmlDocument.LoadFromFileAsync(storageFile,loadSettings);

       }

              try

              {

                 var xmlDoc = new XmlDocument();

                 xmlDoc.LoadXml(xml);

                 var element =xmlDoc.getElementsByTagName_r("content").Item(0);

                 String rss = scenario1RssInput.Text;

                 var cdata = xmlDoc.CreateCDataSection(rss);//create a rss CDataSection and insert into DOM tree

                 element.A(cdata);

              }

              catch (Exception exp)

              {

  Debug.WriteLine(exp.Message);

              }

//Mark HotProducts

<?xml version="1.0"encoding="utf-8"?>

<products>

    <productid="DVD-001" title="Toy story 3" hot="0">

      <price>12.99</price>

      <InStore>35</InStore>

      <Sell10day>33</Sell10day>

   </product>

    <productid="DVD-002" title="The Blind Side" hot="0">

      <price>15.99</price>

      <InStore>12</InStore>

      <Sell10day>48</Sell10day>

   </product>

</products>

           try

           {

              var doc = newXmlDocument();

              doc.LoadXml(xml);

              // Mark 'hot' attribute to'1' if 'Sell10day' is greater than 'InStore'

              var xpath ="/products/product[Sell10day>InStore]/@hot";

              var hotAttributes =doc.SelectNodes(xpath);

              for (uint index = 0; index< hotAttributes.Length; index++)

              {

                 hotAttributes.Item(index).NodeValue = "1";

              }

           }

           catch(Exception exp)

           {

  Debug.WriteLine(exp.Message);

           }

//XPath Query

<?xml version="1.0"encoding="utf-8"?>

<employees>

   <employee>

       <name>MichealJackson</name>

      <department>CustomerSupport</department>

      <startyear>2004</startyear>

   </employee>

   <employee>

       <name>AnniWang</name>

      <department>BusinessPartner</department>

      <startyear>2009</startyear>

   </employee>

   <employee>

       <name>SailYoung</name>

      <department>Consulting</department>

      <startyear>2000</startyear>

   </employee>

</employees>

           var doc =new XmlDocument();

          doc.LoadXml(xml);

           varthisYear = 2012;

           varpreviousOneYear = thisYear - 1;

           varpreviousFiveYear = thisYear - 5;

           varpreviousTenYear = thisYear - 10;

          //方式一

           var xpath= new String[3];

           // select>= 1 year and < 5 years

           xpath[0] ="descendant::employee[startyear <= " +previousOneYear + " and startyear > " +previousFiveYear + "]";

           // select>= 5 years and < 10 years

           xpath[1] ="descendant::employee[startyear <= " +previousFiveYear + " and startyear > " +previousTenYear + "]";

           // select>= 10 years

           xpath[2] ="descendant::employee[startyear <= " +previousTenYear + "]";

           var Gifts= new String[3] { "Gift Card", "XBOX", "Windows Phone" };

           var output= new StringBuilder();

           for (uinti = 0; i < 3; i++)

           {

              var employees =doc.SelectNodes(xpath[i]);

              for (uint index = 0; index< employees.Length; index++)

              {

                 var employeeName =employees.Item(index).SelectSingleNode("descendant::name");

                 var department =employees.Item(index).SelectSingleNode("descendant::department");

                 output.AppendFormat("[{0}]/[{1}]/[{2}]\n",employeeName.FirstChild.NodeValue, department.FirstChild.NodeValue,Gifts[i]);

              }

           }

          //方式二

           //varxpath = new String[3];

           ////select >= 1 year and < 5 years

           //xpath[0]= "/employees/employee[startyear <= " +previousOneYear + " and startyear > " +previousFiveYear + "]";

           ////select >= 5 years and < 10years

           //xpath[1]= "/employees/employee[startyear <= " +previousFiveYear + " and startyear > " +previousTenYear + "]";

           ////select >= 10 years

           //xpath[2]= "/employees/employee[startyear <= " +previousTenYear + "]";

           //varGifts = new String[3] { "Gift Card", "XBOX", "Windows Phone"};

           //varoutput = new StringBuilder();

           //for(uint i = 0; i < 3; i++)

           //{

           //   var employees =doc.SelectNodes(xpath[i]);

           //   for (uint index = 0; index< employees.Length; index++)

           //   {

           //      var employeeName =employees.Item(index).SelectSingleNode("name");

           //      var department =employees.Item(index).SelectSingleNode("department");

           //      output.AppendFormat("[{0}]/[{1}]/[{2}]\n",employeeName.FirstChild.NodeValue, department.FirstChild.NodeValue,Gifts[i]);

           //   }

           //}