VS 2012 Validate XML-text from (Rich)Textbox against XSD

Hi there,

I've been looking for a method to validate my xml(string) in a (rich)textbox against an .xsd. The best sample I've found is: http://www.vbforums.com/showthread.p...ainst-xsd-file, but it uses a "file". How to use it with a string in a (rich)textbox?

Thanks for the help in advance.