Can't use Descendants() or Elements() with xmlns

Question

I\'m new to working with XML, and I\'ve encountered a weird problem while trying to get a specific tag from a spring.net configuration file. After trying to narrow down the

Answer 1

You need to search for tags in that namespace:

XNamespace ns = "aaa";

xmlFile.Descendants(ns + "B").ToList()

Answer 2

You should specify the namespace when querying for the elements.

You can use the GetDefaultNamespace method to avoid hard-coding it. It's also useful if you don't know what it is ahead of time.

Example:

var ns = xmlFile.GetDefaultNamespace();
var nodes = xmlFile.Descendants(ns + "B").ToList();

Answer 3

Just for completeness sake:

var lst = doc.Descendants("{aaa}B").ToList();

(what the other told is correct, but I wanted to give another option :-) )

For ultra completeness-sake, if you want to search ignoring the namespace:

var lst = doc.Descendants().Where(p => p.Name.LocalName == "B").ToList();