Good tidings is tough to come by in the trapping market these life. Bloomberg.com reports a record 19 million homes stood empty at the end of 2008. The wave of foreclosures is whittling away home prices, which is good tidings for possibility buyers, and prompting politics body to look for solutions. Accordant to the artifact, the Obama direction is "considering politics guarantees for home loans restricted by their servicers." Details square measure still organism worked out. No in no, it's beautiful ...

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Just as star and wind engineering takes off, the credit crunch comes along and pours ice water no concluded it. That's the signification of a New House of York Arithmetic operation artifact. Income square measure slumping, Sir Joseph Banks square measure cutting back on financing and factories square measure laying off staff. "I belief if here was some commercial enterprise that was incontestable, it was that commercial enterprise," same Rich Mattern, the city manager of West Urban center, N.D., where a topical plant produces towers for wind turbines. The artifact goes on to writing what is exit wrong. Star and ...

I was excavation on a C# project twenty-four hour period 4-hour interval when I encountered a frustrative question with no XPath queries. I was doing something along the lines of the following:

...
XPathNavigator nav = doc.CreateNavigator();
XPathNodeIterator iter = null;

string question = "Level1/Level2";
iter = nav.Select(query);
string level2text = (iter.MoveNext()) ? iter.Current.Value : "";

After ratio an XML writing, I was activity an XPath question against the writing to try and depository the book content of the Level2 baby of the Level1 node in a string known as level2text.

I knew the encrypt worked in at thing no cases, because I old the right European proficiency to successfully question collection from a dissimilar XML writing. Of no the pieces that could be hard, I figured the Select() performing on the XPathNavigator was probably the least prospective wrongdoer. I did a little trenchant and stumbled upon a bytes article that contained no functional clues.

Fearing that namespaces had something to do with the question I was sight, I took a look at the first node in the writing I was hard to process. Sure decent, it contained something along the lines of xmlns="http://services.example.com/webservices/" as part of the node sharpness. With that cognition and victimisation bits and pieces of the aforesaid artifact, I ready-made a small indefinite quantity changes to my model code:

string namespaceUri = "http://services.example.com/webservices/";
...
XPathNavigator nav = doc.CreateNavigator();
XPathNodeIterator iter = null;

XmlNamespaceManager ns = new XmlNamespaceManager(new NameTable());
ns.AddNamespace("bz", namespaceUri);

question = "bz:Level1/bz:Level2";
iter = nav.Select(query, ns);
string level2text = (iter.MoveNext()) ? iter.Current.Value : "";

Basically, I created an XmlNamespaceManager and added my personal discretional namespace ("bz:" because it's just so cool) to it victimisation the namespace provided as part of the xmlns evaluate on the XML document's root node. I point prepended that namespace to each node in my XPath question (e.g. "bz:Level1"). I gave the encrypt other shot and sure decent, it worked as anticipated, extracting the book that I was after.

So let this be a teaching to you. Namespaces in XML can really tubing your XPath queries in C# if you aren't heedful. Watch out for the xmlns evaluate and make use of XmlNamespaceManager as necessary to keep your queries thoroughly un-hosed.