CODEWITHSUNDEEP
c#xml-serialization
David K
David K

Reputation: 343

Handling windows newline with XmlReader

Recently, I replaced XmlValidatingReader with XmlReader and use XmlReaderSettings to validate the xml with an xsd.

CustomData cd = null;
using (Stream xsdStream = new FileStream(m_DXsdFile, FileMode.Open, FileAccess.Read, FileShare.Read))
{
  XmlTextReader sr = new XmlTextReader(xsdStream);
  using (Stream xmlStream = new FileStream(m_DXmlFile, FileMode.Open, FileAccess.Read, FileShare.Read))
  {
    XmlReaderSettings settings = new XmlReaderSettings();
    settings.ValidationType = ValidationType.Schema;
    settings.Schemas.Add(null, sr);
    XmlReader reader = XmlReader.Create(xmlStream, settings);

    try
    {
      XmlSerializer xmlSerializer = CreateDefaultXmlSerializer(m_Type);
      cd = (CustomData)xmlSerializer.Deserialize(reader);
    }

  ...
}

XML:
<Column Name="Content">
  <Data xsi:type="xsd:string"> * info info info
info info info
 info info info</Data>
  <Data xsi:type="xsd:string">/* This is a test */</Data>
</Column>
<Column Name="ErrorNr">
  <Data xsi:type="xsd:int">2</Data>
  <Data xsi:type="xsd:int">2</Data>
  <Data xsi:type="xsd:int">2</Data>
</Column>

CreateDefaultXmlSerializer() is implemented as suggested here: https://stackoverflow.com/a/9416860/2107510

However, XmlReader normalizes all newlines and converts \r\n to \n. This is not appreciated by the multi line text boxes which now display one line instead of multiple lines.

I tried using XmlWriterSettings.NewLineHandling.Entitize and it fixes my problem but this make the XML document no longer readable in e.g. wordpad or any other text editor. (http://msdn.microsoft.com/en-us/library/system.xml.xmlwritersettings.newlinehandling.aspx)

How can I preserve the multi line strings without losing them due to normalization? (and without other nasty side effects)

Upvotes: 3

Views: 1631

Answers (1)

RoadieRich
RoadieRich

Reputation: 6586

From Creating Xml Readers (emphasis mine):

If you must expand entities on request (readers created by the Create method expand all entities), or if you do not want your text content normalized, use the XmlTextReader class.

Upvotes: 1

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