I have a test app. It creates an XMLTextReader with the following code:

myXMLTextReader = New Xml.XmlTextReader("PurchaseOrder.xml")

Code runs fine. Object is created and subsequently read into a dataset.

I use the same code in a web service. Same exact xml file, down to the same copy.

The object does not get created. Error is: The data at the root level is invalid. Line 1, position 1.

It seems there may be a namespace conflict, or schema conflict, but I don't understand it.

Any ideas or thought would be appreciated.

DJC

What code is throwing that error? Your code or the web service code? Probably the problem lies in the web service reply serialization.

-Peter

It's the web service code that throws the error. Specifically the very line

myXMLTextReader = New Xml.XmlTextReader("PurchaseOrder.xml")

Tell me more about web service reply serialization, troubleshooting, or an article or book I could look at.

Thanks.
DJC

That error on that line of code would imply that the xml in that file is malformed. That's the only thing I can imagine.

In my opinion, the fact that you are doing this in a web service is irrelevant. That code is simply trying to load an XML file and it's choking on that. I would take another look at the contents of that xml file.

-Peter

That was my first guess. Problem is it works on a desktop app. xmlTextReader is created and loads the file. I then load into an untyped dataset which then has 3 tables which exactly match the structure of the xml file.

That's what's so puzzling about this.

Thanks for your input.

DJC