Moodle Interface for .net

My company is planning to setup Moodle for internal & external training courses. Our training team has a lot of training material - mostly in MS Word/HTML/PDF/PPT slides format that needs to be converted into courses in Moodle. It is becoming too much of work to manually create new course/lesson and add text/images from existing material into it. I am asked to check if this can be automated. So here I am exploring the option of injecting the data directly into Moodle database (in our case it is MySQL) using a WinForm application. Is there any better way/API/Interface to Moodle that can be used via .net WinForm application? I am particularly interested into adding new category/Course/Lesson at the moment. I already had a look at http://moodle2003wp.codeplex.com/ [SharePoint Web Parts for Moodle] and https://stackoverflow.com/questions/2009196/is-there-any-api-exists-for-moodle [is there any API exists for Moodle?] [SharePoint Web Parts for Moodle] has a data assess layer for Moodle but looks like it's read only - it can't write stuff back into Moodle. Any pointer will be helpful. Thanks in advance.