“The calling thread must be STA, because many UI components require this.” Error in WPF?

Question

I am creating a xps document as below.

Assembly assembly = Assembly.GetExecutingAssembly();
//read embedded xpsDocument file
Stream helpStream = assembly.Get         


        

Answer 1

Is your code trying to access the xps doc from a background thread? If this is the case, you'll want to use the dispatcher. Info on that here.

If this doesn't help, could you post the code where you're actually calling GetFixedDocumentSequence()?