Not without, with N! With a lot of sheets!

Thank you very much, it works. There is only one problem; if I open two different pages of internet in my computer, it doesn't work. I know that if I open the page with "New Session" it works, but i'd like to do it only opening a new page of internet. Any idea? Thanks, Silvia

I can't understand how it works. Can you tell me where to find an example? Thanks, Silvia

There is no event name "Text_Changed" under combo box of wpf.