Data from a SQL Database

Hi Folks,

i have a SQL (Express) Database and I like to use it in my MVC Web App. Sorry, all for me is new. I´m learning building up websites. 

The normal way I connect into my database, is with username and password. But already, when I try to insert these database in my MVC Project I get a warning message that told me, that ther is a security problem, when userdates are a part of the connection string. I already told you, that I am a absolute beginner in these points, so please tell me, what is the correct way to get datas from and to a sql database by a secure way.

Thanks alot.

datekk.