This tutorial explains the procedure of validating an XML document with an XML schema.
Inside that with the Player tag, the Name, Team, Year and Card Company all within the appropriate level.All source code included in the card Validate an XML document against an XSD schema with Ruby and Nokogiri is licensed under the license stated below.This includes both code snippets embedded in the card text and code that is included as a file attachment.For example, you might have a XML file where you have all of your baseball cards stored in.You might have a XML file that looks something like this: This XML file contains two cards with various tags associated with each. Load(feed Url) returns "Data at the root level is invalid. Send(String Socket Server Address, Int32 port) Inner Exception: Sometimes, there is some "invisible" (not visible in all text editors). It's called BOM, you can read more about it here: https://en.wikipedia.org/wiki/Byte_order_mark#Representations_of_byte_order_marks_by_encoding to fetch xml from another domain, it's possible that the host will reject the request and return and unexpected (non-xml) result, which results in the above Xml Exception See my solution to this eventuality here: XDocument.Although plain text, XML isn't just some unstructured mess of data.It follows a purposeful structure and thus information can be expected to be where you think it is.Further guidelines for the use of XML in a networked context appear in RFC 3470, also known as IETF BCP 70, a document covering many aspects of designing and deploying an XML-based language.The material in this section is based on the XML Specification.