I'm loading an XML file, getting the values of some nodes and then setting those values into an object.The problem is that although I can get into the each node, I can't get its value: it just returns null. Searching in Google and SO I found several threads saying that usually it is a problem of namespaces. So I set up a namespace on the XML file and in my code to work with it. This is now when things get funny:
If all the nodes but the last one are prefixed (in my code) with the namespace, all of them gets set except that particular one which gives an ArgumentNullException (\[code\]tabla\[/code\] does not accept nulls on some properties). This seems to be expected behavior.
if I correct that last line and set up the namespace (as it should be), then the exception gets raised at the FIRST node.
This is the XML:\[code\]<?xml version="1.0" encoding="utf-8"?><root xmlns="http://daniel.ponticelli.com/ns/dataExport"> <PollInstance> <Poll_Instance_id>1</Poll_Instance_id> <POLL_description>Mes 1</POLL_description> <dt_start>01/09/2012 12:00:00 a.m.</dt_start> <dt_end>30/09/2012 12:00:00 a.m.</dt_end> <POLL_status>0</POLL_status> <dt_created>03/09/2012 09:50:36 a.m.</dt_created> <dt_updated>03/09/2012 09:50:36 a.m.</dt_updated> <id_original_clone>0</id_original_clone> <target_locs>0</target_locs> <id_poll>1</id_poll> </PollInstance></root>\[/code\]This is the "wrong" code that has the last element without namespace:\[code\]XElement instancia = xml.Descendants().First();XNamespace ra = "http://daniel.ponticelli.com/ns/dataExport";tabla.Poll_Instance_id = (int)instancia.Element(ra + "Poll_Instance_id");tabla.POLL_description = (string)instancia.Element(ra + "POLL_description");tabla.dt_start = DateTime.Parse((string)instancia.Element(ra + "dt_start"));tabla.dt_end = DateTime.Parse((string)instancia.Element(ra + "dt_end"));tabla.POLL_status = (int)instancia.Element(ra + "POLL_status");tabla.dt_created = DateTime.Parse((string)instancia.Element(ra + "dt_created"));tabla.dt_updated = DateTime.Parse((string)instancia.Element(ra + "dt_updated"));tabla.id_original_clone = (int)instancia.Element(ra + "id_original_clone");tabla.target_locs = (int)instancia.Element(ra + "target_locs");tabla.id_poll = (int)instancia.Element("id_poll");\[/code\]The previous code gives the exception on the last line.Now this is the "correct" code that has all the elements prefixed with the namespace:\[code\]XElement instancia = xml.Descendants().First();XNamespace ra = "http://daniel.ponticelli.com/ns/dataExport";tabla.Poll_Instance_id = (int)instancia.Element(ra + "Poll_Instance_id");tabla.POLL_description = (string)instancia.Element(ra + "POLL_description");tabla.dt_start = DateTime.Parse((string)instancia.Element(ra + "dt_start"));tabla.dt_end = DateTime.Parse((string)instancia.Element(ra + "dt_end"));tabla.POLL_status = (int)instancia.Element(ra + "POLL_status");tabla.dt_created = DateTime.Parse((string)instancia.Element(ra + "dt_created"));tabla.dt_updated = DateTime.Parse((string)instancia.Element(ra + "dt_updated"));tabla.id_original_clone = (int)instancia.Element(ra + "id_original_clone");tabla.target_locs = (int)instancia.Element(ra + "target_locs");tabla.id_poll = (int)instancia.Element(ra + "id_poll");\[/code\]This code now gives the exception on the third line! (the one that begins with \[code\]tabla.Poll_Instance_id\[/code\]). If I set a breakpoint on the "wrong" code just before the last line, I can check in VS that indeed the values are being retrieved from the XML and set on the object \[code\]tabla\[/code\] as expected; so I don't know what's going on.
