Modify connection string in nTier code first project

Question

I have a 4 tier web api project :

Web Api - Entities - Business Logic - Data Access

..and I am using code first with an empty context constructor so the connection string is picked up from the web.config in my Web Api project :

 public MyContext() : base()
    {

    }

Question is, can I read the serverName and databaseCatalog from a .settings file and modify the connection string at runtime?

Answer 1

I ended up building the connection string in the business layer and passing it down through layers in the constructor.