Deploy windows form c# with local database

Question

Hello, i have finished developing a c# code for a software, and it is time to make a setup for it ( using "Setup and Deployment" project of visual studio ) and publish it to the users to install and use the software. this software uses files of DLLs, database files (mdf,ldf) and some other (.exe, .exe.config, .exe.manifest and .pdb)... in the setup project of this software i need to put the required files to be installed on users pc... so i put all the files in debug folder (or release folder including database files mdf and ldf)... the problem is that anyone who has installed this application, can see my MDF and LDF database files and can easily attach it to a sql server and find out how my tables were designed and what are my records.
Please help me with these questions that i need the most :

• 1)how could i prevent users from seeing these source files?
• 2)is this way of publishing (put every thing in debug or release folder for installation of end user) correct?
• 3)should i directly put MDF and LDF files or have to do a some work of securing them like compiling into irreversible format that only application can use it not anyone else?
• 4)should i do something in the process of creation of database in visual studio to prevent any one accessing it except software itself?
• 5)am i missing a concept in the way of publishing an application with local database?

P.S:

• application is developed by C# windows form using visual studio .net 2013 (.NET 4.5)
• Setup project is used by "Setup and Deployment" of visual studio
• Application is using local database by visual studio
• This is my first time of publishing an actual software sorry for any lack of information

Thanks for your help