Reference to undeclared entity 'nbsp' - why?

Question

I have the following line of code:

XDocument formConfiguration = XDocument.Load(ConfigurationManager.AppSettings["XMLFileURL"]);

I get the following exception message:

Reference to undeclared entity 'nbsp'

There are no   sequences in the XML. There are no "&" characters in the XML. Where could this be coming from?

Thanks, Charles

Answer 1

it looks like there should be an   in your file. I'd recommend using an XML validator to make sure that the XML file you are trying to read is well-formed. W3Schools has one here

Answer 2

Could it be there was an   declaration, which is an issue, because ampersand (&) isn't allowed for XML documents?

Answer 3

Found the answer; XDocument.Load works better with a file path rather than a URL. It works now. Thanks everyone.