The database creation wizard does not appear in the service based database and does not create a connection string in the app.config in the entity framework

I'm doing an entity framework virtual course in which the instructor uses visual studio in the 2012 version and during class he creates a web form project and asks to create a database in the service-based-database template when creating a new item, and soon after creating the template, the bank creation wizard menu appears in which you have two options for selecting the 'dataset' and 'entity data model', the instructor chooses the dataset and after creating the file mdf it says that automatically in the app.config file a 'connectionstrings' tag is created. My problem is that my visual studio is in the 2015 version and when I click on the service-based-database it automatically creates the mdf database file without displaying the creation wizard menu with the two dataset and entity data model options, and also does not create the connections strings in the app.config. I would like to know how to display the menu with the two options in the service based database and create a connectionstring automatically.