How to check if an element exists in an xml file?

Question

.NET

Hello!
I am using LinqToXML. It is necessary to check the presence of the necessary elements in the xml file, since when trying to read non-existent elements, an exception occurs (which I, of course, process). However, I would like to first check for the existence of the necessary elements in order to change the program logic without exception.
For example, I use the construction:

IEnumerable<XElement> XMLDataList = XMLFile.Root.Element("FirstNode").Element("SecondNode").Descendants("NodesList");

In this case, I get an exception if the xml file does not contain /FirstNode/SecondNode/NodesList elements.
On the topic in the search engines did not find anything worthwhile. It is advised to use XPath or XmlReader.
Thank you very much in advance!

Answer 1

My omission, did not specify. You need to check the entire path /FirstNode/SecondNode/NodesList for existence.
Is there a way other than a lot of nested ifs with checks for each node using the Any() method?
That is, I want to implement the following program logic:
If /FirstNode/SecondNode/NodesList exists
then step1
Otherwise step2.
In general, I solved my own question (LINQ to XML, probably, cannot do it any other way):
bool IsNodeExist = XMLfile.Elements().Any(node ​​=> node.Name == "Address");
Ivan Filatov , thanks for the tip!
Learn coolhackers :)

Answer 2

XMLFile.Root.Element("FirstNode").Element("SecondNode").Element("NodesList").Any();