I think the above will give you that. If the site map needs to be contextual, then you'll need to navigate the xml produced by the tool to find the current page and then generate your navigation from the child nodes of that. Cheers Ben

I use class wrapper with Marshal.ReleaseComObject in destructor, but error strangely unpredictable occured in the finish of application.

.NET does it all for you; you don't need to call CoInitialize. Note that if you're using a COM object on a background thread, ensure that the thread is STA. You can do this by calling thread.SetApartmentState before the thread has started executing. Note that the UI thread for Windows Forms (and WPF, I believe) applications are STA by default, so if you created a COM object on that thread, you'll be fine. Tech, life, family, faith: Give me a visit. I'm currently blogging about: Just F-ing Do It :) The apostle Paul, modernly speaking: Epistles of Paul Judah Himango

That all depends on what you mean by "too small." Since there are 36,000,000,000 100-nanosecond intervals per hour, the value 1,387,475,976 is still within January 1st, 1601. Make sense? "A good athlete is the result of a good and worthy opponent." - David Crow "To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne