title: database file not showing in app_data in asp.net mvc4 tutorial using visual studios 2010
body: <p>I'm doing this tutorial on ASP.NET: <a href="http://www.asp.net/mvc/tutorials/mvc-4/getting-started-with-aspnet-mvc4/intro-to-aspnet-mvc-4" rel="nofollow">http://www.asp.net/mvc/tutorials/mvc-4/getting-started-with-aspnet-mvc4/intro-to-aspnet-mvc-4</a> and I reached a stage in which I need to work with a database. </p>
  
  <p>Since I'm using Windows XP, LocalDB is not an option, so I configured SQL Server Express instead. </p>
  
  <p>The app is working, but I can't seem to see the <code>MovieDBContext.mdf</code> file in the <code>App_Data</code> folder.
  I tried refreshing, building, running, nothing helps.</p>
  
  <p>The only thing in that folder is <code>ASPNETDB.mdf</code>. Does this file contain what I'm looking for? </p>
  
  <p>I opened it and it showed a bunch of tables related to users of the app.</p>
  
  <p>My problem comes when it's time to add new fields to the movie class and coordinate it with the database, meaning I have to turn on migration.</p>
  
  <p>Here are the instructions for migration:
  <a href="http://www.asp.net/mvc/tutorials/mvc-4/getting-started-with-aspnet-mvc4/adding-a-new-field-to-the-movie-model-and-table" rel="nofollow">http://www.asp.net/mvc/tutorials/mvc-4/getting-started-with-aspnet-mvc4/adding-a-new-field-to-the-movie-model-and-table</a></p>
  
  <p>Sadly I cannot delete the database files according to this tutorial since I don't have access to the files.</p>
  
  <p>Is there a way to see the <code>.mdf</code> files?</p>
  
  <p>my connection string is:</p>
  
  <pre><code>&lt;add name="MovieDBContext"
       connectionString="Data Source=.\SQLEXPRESS;Initial Catalog=Drivers;AttachDbFilename=|DataDirectory|\Movies.mdf;Integrated Security=True;User Instance=True"
       providerName="System.Data.SqlClient"
  /&gt;
  </code></pre>