title: .mdf file is not created on ASP.Net MVC 4 app after adding <connectionStrings> tag on Web.config
body: <p>I was trying the <a href="http://www.asp.net/mvc/tutorials/mvc-4/getting-started-with-aspnet-mvc4/adding-a-model" rel="nofollow">ASP.Net MVC 4 tutorial</a>. When I have added the following code and build the application I was expecting Movies.mdf file will be created under <strong>App_Data</strong> folder on the <strong>Solution Explorer</strong>. However, nothing has been created in that directory. Any idea why? </p>
  
  <pre><code>&lt;connectionStrings&gt;
    &lt;add name="DefaultConnection" 
     connectionString="Data Source=(LocalDb)\v11.0;Initial Catalog=aspnet-MvcMovie-2012213181139;Integrated Security=true" 
     providerName="System.Data.SqlClient"/&gt;    
    &lt;add name="MovieDBContext" 
     connectionString="Data Source= (LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\Movies.mdf;Integrated Security=True" 
     providerName="System.Data.SqlClient" /&gt; 
   &lt;/connectionStrings&gt;
  </code></pre>
  
  <p>Using:
  .NET Framework 4
  VS 2010</p>