How to import a .htaccess rule file to IIS7.5 by C# or VBScript?

http://thomas.bindzus.me/tag/iis-7-import-htaccess-files/

This link shows how to import an apache .htaccess rule file to IIS7.5.

Now I want to do the same thing by using C# or Vbscript,not from the UI,is there anyone who knows how to achieve it?

And I also want to know how to clear all rewrite rules by C#.