I'm trying to deserialize xml into a complex POCO, and the result of using xsd.exe to make my c# classes from the xsd made some properties string arrays. That might work with my postgres db, but it doesn't work with a mocked dbcontext for unit testing.
An example XML might look like this:
<Car>
<CarWindow>FrontLeft</CarWindow>
<CarWindow>BackLeft</CarWindow>
<OtherFields></OtherFields>
</Car>
So what I want to do is change some of these string arrays, which have a low maxOccurs of 2-4 into dedicated columns. That change will be useful in other ways for this project too. So instead of string[] CarWindow I could have string CarWindow1; string CarWindow2
What I'm missing is a way to specify in the XmlElement attribute a way to map the first, second, etc occurrence of a repeating element. Something like [XmlElement(Occurrence=1)]
I've looked at the XmlElementAttribute documentation and maybe I'm missing it, but I don't see a way to specifically map the nth occurrence of a repeating xml node to one property. Thanks!
Related
Below Example How can Get "Airtel" and "145" Values, because my Client Has given this type XML Response
So How Can I Get both Values
<item item="Campaign name" type="string">Airtel</item>
<item item="Daily Limit" type="number">145</item>
As per the comment, we would need to see the full XML to give you a more complete answer. But you have 3 real options :
XMLReader. Probably not what you want as it's forward only and involves a lot of manual parsing.
XMLDocument. Not a bad option if you only want limited amount of notes and want their values and don't want to deserialize the entire XML doc.
XMLSerializer. Good if you want to deserialize the entire object straight from XML to class without you having to do a heck of a lot.
If you edit your question to include the full XML doc, then I can give you a more complete answer or you can read about your options for parsing XML here : https://dotnetcoretutorials.com/2020/04/23/how-to-parse-xml-in-net-core/
I'm using XDocument and I need to parse my XML file to retrieve all attribute with the same name event if its node's name is different from the other.
For example, for this XML :
<document>
<person name='jame'/>
<animals>
<dog name='robert'/>
</animals>
</document>
I want to retrieve all attributes named 'name'.
Can I do that with one request XPath or do I need to parse every node to find thos attributes ?
Thanks for your help !
The XPath expression
//#name
will select all attributes called name, regardless of where they appear.
By the way, 'parsing' is something that happens to the XML document before XPath ever enters the picture. So when you say "do I need to parse every node", I think this isn't really what you mean. The entire document is typically already parsed before you run an XPath query. However, I'm not sure what you do mean instead of 'parse'. Probably something like "do I need to visit every element" to find those attributes? In which case the answer is no, unless in some vague implementation-dependent sense that doesn't make any difference to you.
I have an xml response string and I want to change a value inside and log it.
<xml>
<ns2:abcd>
<password>sample</password>
</ns2:abcd>
I want to change the password value into encrypted version.
I am have tried using XmlDocument.SelectSingleNode but was thinking is there any better way than this?
Btw you need ns2 namespace to be declared, otherwise your xml will not be valid. After adding namespace definition, you can parse and modify your xml with Linq to Xml:
XDocument xdoc = XDocument.Parse(xml);
var passwordElement = xdoc.XPathSelectElement("//password");
passwordElement.Value = Encrypt((string)passwordElement);
xdoc.Save(path_to_xml);
No - there is no better way than using proper XML classes.
XmlDocument or XDocument would be perfectly fine for this task. If you XML is very large you may want to look into streaming with XmlReader (unlikely necessary in your case).
You might also consider looking into xsd.exe. With xsd.exe, you can deserialize your xml into a type-safe object model. From there, it's easy to manipulate the data.
I'm attempting to find complete XML objects in a string. They have been placed in the string by an XmlSerializer, but may or may not be complete. I've toyed with the idea of using a regular expression, because it seems like the kind of thing they were built for, except for the fact that I'm trying to parse XML.
I'm trying to find complete objects in the form:
<?xml version="1.0"?>
<type>
<field>value</field>
...
</type>
My thought was a regex to find <?xml version="1.0"?><type> and </type>, but if a field has the same name as type, it obviously won't work.
There's plenty of documentation on XML parsers, but they seem to all need a complete, fully-formed document to parse. My XML objects can be in a string surrounded by pretty much anything else (including other complete objects).
hw<e>reR#lot$0fr#ndm&nchrs%<?xml version="1.0"?><type><field>...</field>...</type>#ndH#r$omOre!!>nuT6erjc?y!<?xml version="1.0"?><type><field>...</field>...</type>ty!=]
A regex would be able to match a string while excluding the random characters, but not find a complete XML object. I'd like some way to extract an object, parse it with a serializer, then repeat until the string contains no more valid objects.
Can you use a regular expression to search for the "<?xml" piece and then assume that's the beginning of an XML object, then use an XMLReader to read/check the remainder of the string until you have parsed one entire element at the root level (then stop reading from the stream with XMLReader after the root node has been completely parsed)?
Edit: For more information about using XMLReader, I suggest one of the questions I asked: I can never predict xmlreader behavior, any tips on understanding?
My final solution was to stick with the "Read" method when parsing XML and avoid other methods that actually read from the stream advancing the current position.
You could try using the Html Agility Pack, which can be used to parse "malformed XML" and make it accessible with a DOM.
It would be necessary to know which element you are looking for (like <type> in your example), because it will be parsing the accidental elements too (like <e> in your example).
I am trying to generate some JSON from an XML file, but not a straightforward conversion. I wish to pick and choose bits and have a slightly different structure.
I would rather not just concatenate a giant string together and was wondering if there were some decent libraries around to do this.
Also, for testing I would like to be able to validate the created json, just a simple check to see if it is valid JSON
Load the XML into a set of classes (use XMLSerializer) then implement JSON generator methods on those classes. Different methods, different JSON.
You can convert XML to other text representations pretty easily using XSLT, particularly file-to-file using xsltproc or a command-line version of xalan.
XSLT is sometimes an awkward programming language, but if you go this route, I have two recommendations for JSON conversions. Set your output to text, with a UTF-8 character set:
<xsl:output method="text" encoding="UTF-8" />
and run JSLint on the result, in order to catch any bugs in your XSLT file.
I would probably use Linq to XML (XElement and friends) to generate the new object and then pass that object to the Json serializer.
Other answers look good: I think I would also bind source format into objects, then serialize as the other formats. And any transformations would be done to objects, and not using data format representation. When using proper parser (for input) and generators/serializers (for output), you do not have to worry about well-formedness (resulting xml or json being syntactically correct).
And for biz-logic validity you could (and should) do it using objects.