title: Why a class in App_Code/BLL is not accessible in pages?
body: <p>Hi I have a class in folder App_Code/BLL/Countries.cs ,which is a public class.
  But when I tried to access the class in a ASP.NET page like:</p>
  
  <pre><code>Countries MyCountries = new Countries(); 
  </code></pre>
  
  <p>its showing error:</p>
  
  <p>"The type or namespace name 'Countries' could not be found (are you missing a using directive or an assembly reference?)"</p>