CODEWITHSUNDEEP
c#xmllinq-to-xml
Tormod
Tormod

Reputation: 4583

Extract Xml Element from a larger string

I have a string that starts with an xml element then proceeds with regular text after the Element has ended.

Like so: 

<SomeElement SomeAtt="SomeValue"><SomeChild/></SomeElement> More random text.

I want to parse the first part into an XElement and then separate out the following text into a string variable. I have considered just counting anglebrackets, but there is legal XML that would throw me off. I would prefer to use the out-of-the-box parsers. I have tried using XmlReader and XElement.Parse method. I would like them to stop after the element is read instead of throwing exceptions because of the unexpected text after the Xml element. I haven't been able to thus far. XmlReader has a ReadSubtree method, but I couldn't get it to work.

Any ideas?

Edit

Upvotes: 1

Views: 510

Answers (2)

jdweng
jdweng

Reputation: 34433

Your XML requires an identification line (normal first line) and only one root node to be valid for the XMLReader to read without errors.

Upvotes: 0

har07
har07

Reputation: 89325

One possible simple approach maybe to wrap the entire string within a root node to make it valid XML and parseable by XElement or XDocument :

var xml = @"<SomeElement SomeAtt=""SomeValue""><SomeChild/></SomeElement> More random text.";
xml = string.Format("<root>{0}</root>", xml);
var doc = XDocument.Parse(xml);
var element = doc.Root.Elements().First();
var trailingString = doc.Root.LastNode;

Console.WriteLine(element.ToString());
Console.WriteLine();
Console.WriteLine(trailingString.ToString());

Console Output:

<SomeElement SomeAtt="SomeValue">
  <SomeChild />
</SomeElement>

 More random text.

Upvotes: 5

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