title: How to use class library in separate project within the same MVC4 solution?
body: <p>So I'm trying to access a couple of IsInteger/IsNumeric functions from a custom class library I wrote in a separate project but within the same MVC4 solution.</p>
  
  <p>I have a class library called MyHelpers (class library project) and the other is called Portal (a web application project), so two separate projects in the same MVC4 solution.  After building MyHelpers successfully and putting the .dll in the Portal project's bin folder AND adding a reference to MyHelpers.dll, I still cannot find a reference to it in my Controller .cs file when adding the "using MyHelpers;" statement.</p>
  
  <p>Why is this happening?  Am I missing something? I thought that if I add a reference to the .dll and use the "using" statement it will let me reference the functions in the class library.  What gives?</p>
  
  <p>Please help and thanks much in advance.</p>