Clean internal session for Password in IE[or WebBrowser based on IE]

http://www.alphatecit.com.au/code-snippets/facebook-c-sdk-multiple-login-problem-resolved/

• http://msdn.microsoft.com/en-us/library/aa385328%28v=VS.85%29.aspx
• http://msdn.microsoft.com/en-us/library/aa385114%28VS.85%29.aspx

INTERNET_OPTION_END_BROWSER_SESSION

42

Flushes entries not in use from the password cache on the hard disk drive. Also resets the cache time used when the synchronization mode is once-per-session. No buffer is required for this option. This is used by InternetSetOption.

http://blog.prabir.me/post/Facebook-CSharp-SDK-Writing-your-first-Facebook-Application.aspx