How best to use XPath with very large XML files in .NET?

Question

I need to do some processing on fairly large XML files ( large here being potentially upwards of a gigabyte ) in C# including performing some complex xpath queries. The prob

Answer 1

You've outlined your choices already.

Either you need to abandon the XPath and use XmlTextReader or you need to break the document up into managable chunks on which you can use XPath.

If you choose the latter use XPathDocument its readonly restriction allows better used of memory.