Is it possible to dynamically create an HTML document in a string type and then pass it to a web browser control?

I can't see a way of doing it without saving the string as a file then pointing the webbrowser control to the file !!!

For example, if you have a text editor in which you are writing HTML code and you want to view it in a web browser which is sitting on a different tab (like frontpage) how can you send the HTML source to the browser?? I can only see how to pass it a URL or file...