http://www.infragistics.com/community/blogs/dhananjay_kumar/archive/2015/11/06/what-are-viewdata-viewbag-and-tempdata-in-asp-net-mvc.aspx
This is the best reference about viewdata, viewbag and tempdata for people who start to learn about MVC.
I just share the link and I hope everybody will refer to this. Thanks a lot :-)