XDocument or XmlDocument: Which .NET XML API Should You Choose?

.NET XML processing: comparison of XDocumence and XMLDOCUMENT

When processing XML in .NET, there are two main options: xdocument and xmldocument. Which one depends on the specific needs of the application.

XMLDOCUMENT: Classic DOM API

XMLDOCUMENT is the classic XML document object model (DOM) API in .NET. It fully supports the creation, reading and modifying XML documents. However, it has a longer and more complicated grammar compared to XDocument.

xdocument: linq to xml

XDocument (introduced by .NET 3.0) using Language Integration Inquiry (Linq) technology simplified XML processing. It provides simple and intuitive syntax to make it easier for creating and operating XML documents. XDocume and XMLDOCUMENT's choice

If you use .NET 3.0 or earlier versions, you can only use XMLDOCUMENT. Otherwise, please consider the following advantages of XDocument:

Simplified grammar:

XDocument's grammar based on Linq greatly simplifies XML operations.

Naming space support:

XDocument provides convenient XML name space processing.
• LINQ Integration: XDocument can be seamlessly integrated with linq query to facilitate data operation.
• Declaration method: The declaration method of the xdocument allows to build a complex XML structure in an elegant way.
• Precautions for flow treatment
It should be noted that the XMLDOCUMENT and XDocument are both memory APIs, which means that they need to load the entire XML document to the memory to process it. For large XML documents, it is recommended to use streaming APIs such as XMLREADER and XMLWRITER to improve processing efficiency.
• In short, because XDocume is easy to use, integrates with Linq, and supports naming space, it is a recommendation option for most XML processing tasks. However, if the old version needs to use the classic DOM API, or the flow processing optimization is crucial, the XMLDOCUMENT may be the right choice.

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