title: sdf file not showing in App_Data (using MVC application)
body: <p>I followed the "Creating an Entity Framework Data Model for an ASP.NET MVC Application" in ASP.net and changed it to meet my needs.
  I built the project and run it - everything works fine (I can view details, edit and save).
  I press "Show all files" and there is nothing under App_Data.
  I tried to read the related threads here but i couldn't fix it.
  I will appriciate any Idea!</p>
  
  <p>this is my connection string:</p>
  
  <pre><code>&lt;connectionStrings&gt;
  &lt;add name="ApplicationServices"
       connectionString="data source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|aspnetdb.mdf;User Instance=true"
       providerName="System.Data.SqlClient" /&gt;
  </code></pre>
  
  <p></p>
  
  <p>Thank you!</p>