从viewModel在Asp.net MVC 3上实现Dropdownlist

I'm new to .net and mvc platform, i have so many int fields that stores some dropdownlist values, i've created fields int type due to database size so i'm implementing dropdownlist via this method, it works but i don't know if it's the correct solution to store text of values on viewmodel here is the sample code: I'm new to .net and mvc platform, i have so man