edit/update an xml content

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Hi guys i would like to ask how will i edit 1 specific content in my xml file using csharp? assuming i have an xml file that has this value

XML

<?xml version="1.0" standalone="yes"?>
<NewDataSet>
  <xs:schema id="NewDataSet" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
    <xs:element name="NewDataSet" msdata:IsDataSet="true" msdata:UseCurrentLocale="true">
      <xs:complexType>
        <xs:choice minOccurs="0" maxOccurs="unbounded">
          <xs:element name="Table">
            <xs:complexType>
              <xs:sequence>
                <xs:element name="CityId" type="xs:int" minOccurs="0" />
                <xs:element name="CountryId" type="xs:int" minOccurs="0" />
                <xs:element name="RegionId" type="xs:int" minOccurs="0" />
                <xs:element name="City" type="xs:string" minOccurs="0" />
                <xs:element name="Longitude" type="xs:float" minOccurs="0" />
                <xs:element name="Latitude" type="xs:float" minOccurs="0" />
                <xs:element name="TimeZone" type="xs:string" minOccurs="0" />
                <xs:element name="Code" type="xs:string" minOccurs="0" />
              </xs:sequence>
            </xs:complexType>
          </xs:element>
        </xs:choice>
      </xs:complexType>
    </xs:element>
  </xs:schema>
  <Table>
    <CityId>27239</CityId>
    <CountryId>254</CountryId>
    <RegionId>124</RegionId>
    <City>Gray Mountain</City>
    <Longitude>35.8756</Longitude>
    <Latitude>-111.412</Latitude>
    <TimeZone>-07:00</TimeZone>
    <Code>753</Code>
  </Table>
  <Table>
    <CityId>35786</CityId>
    <CountryId>254</CountryId>
    <RegionId>148</RegionId>
    <City>Rapelje</City>
    <Longitude>45.9932</Longitude>
    <Latitude>-109.288</Latitude>
    <TimeZone>-07:00</TimeZone>
    <Code>756</Code>
  </Table>
  <Table>
    <CityId>4354</CityId>
    <CountryId>122</CountryId>
    <RegionId>2329</RegionId>
    <City>Tamana</City>
    <Longitude>32.917</Longitude>
    <Latitude>130.567</Latitude>
    <TimeZone>+09:00</TimeZone>
    <Code />
  </Table>

now on cityid

which is on the second row i want to edit the city value from

Rapelje

to NewCity how am i going to accomplish that? please help thanks

Posted 15-Oct-11 17:04pm

Madzmar25

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2 solutions

Solution 2

I suggest HtmlAgilityPack

http://htmlagilitypack.codeplex.com/[^]

It is fantastic! With knowing XPath, do whatever you want with XML files or even ASPX or ASCX files which their format will confuse Microsoft XMLDocument. but HtmlAgilityPack can tolerate erroneous XML files.

Posted 15-Oct-11 21:05pm

Amir Mahfoozi

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Sergey Alexandrovich Kryukov · Accepted Answer · 2011-10-15T17:54:00

As soon as your XML file is quite small, I would first advise the solution based on DOM (see first item from the list below); other solutions can also be considered. Below, I overview them:

Use System.Xml.XmlDocument class. It implements DOM interface; this way is the easiest and good enough if the size if the document is not too big.
See http://msdn.microsoft.com/en-us/library/system.xml.xmldocument.aspx[^].
Use the classes System.Xml.XmlTextWriter and System.Xml.XmlTextReader; this is the fastest way of reading, especially is you need to skip some data.
See http://msdn.microsoft.com/en-us/library/system.xml.xmlwriter.aspx[^], http://msdn.microsoft.com/en-us/library/system.xml.xmlreader.aspx[^].
Use the class System.Xml.Linq.XDocument; this is the most adequate way similar to that of XmlDocument, supporting LINQ to XML Programming.
See http://msdn.microsoft.com/en-us/library/system.xml.xmldocument.aspx[^], http://msdn.microsoft.com/en-us/library/bb387063.aspx[^].

—SA