I'll start by showing you how you can use the Xml Reader object to move through an XML file, extracting information as you go.
Then you'll see how other objects, including the Xml Node and Xml Document objects, provide a more structured view of an XML file.
These classes define overloaded constructors to read XML files, strings, streams, Text Reader objects, Xml Name Table, and combinations of these. The Xml Node Type enumeration specifies the type of node. A content's node is an item of the following type: text CDATA, Element, Entity Reference, or Entity.
After creating an instance, you simply call the Read method of the class to read the document. Reading an XML file Getting Node Information The Name Property returns the name of the node with the namespace prefix, and the Local Name property returns the name of the node without the prefix. The Value property returns the value of a current node. So if you call the Move To Content method, it skips other types of nodes besides the content type nodes.
If you look at the Inner Exception of the thrown exception, it will tell you which section is the problem.
I had this same problem with an MSTest class: Marlon Grech in his article says "the element has to be defined as the first element in the App.config." So make sure that is the first element in under the element. If you have User scoped settings you may also have a user.config file somewhere in the [Userfolder]\App Data\Local[Project Name] folder.
I'll work with a very simple XML file named that represents three books a computer bookstore might stock. Add(str Node) End While End If End If Loop ' Clean up xtr.
Here's the raw XML file: The Document Object Model, or DOM, is an Internet standard for representing the information contained in an HTML or XML document as a tree of nodes. Close() End Sub The DOM includes nodes for everything in the XML file, including the XML declaration and any whitespace (such as the line feeds and carriage returns that separate lines of the files).
Listing 6-9 reads an XML file and displays some information about the file. The Xml Node Type enumeration members are Attribute, CDATA, Comment, Document, Element, White Space, and so on. In Listing 6-10, you read a document's nodes one by one and count them. See the following example: The Get Attributes of a Node The Get Attribute method is an overloaded method.I've been doing some validating of documents against an XSD lately.Validation is pretty straight forward, you take any Xml Text Reader and wrap and run it through the Xml Validating Reader. 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.