Bind dropdownlist through Enum in MVC 4

Hello, 

I am working on Asp.net MVC 4 application and below i attached code for more understanding. i am working CRUD operation in the application. in application create and data show in table working good. but some problem face in edit and delete action. in app i am using dropdownlist bind through enum so on registration page dropdownlist bind perfectly and working fine. but on edit and delete action DDL not bind according to selected 

value. it show the default value.