title: How do I add a cs file to an existing C# project?
body: <p>A while back I wrote a little program in Microsoft Visual C# 2008 Express Edition.  In it included a file called "ProblemReport.cs" with it's own form and ProblemReport class.</p>
  
  <p>I'm writing a new program and want to reuse this code.  (still working in MS Vis C# 2008 express)</p>
  
  <p>In my new program, in the C# Solution Explorer, I right clicked on my project and chose "Add existing item..."  I then added ProblemReport.cs, ProblemReport.designer.cs and ProblemReport.resx.</p>
  
  <p>What step(s) am I missing here?  When I go back to the main form in my new program, and try to instantiate a new instance of "ProblemReport", I get the error message:  </p>
  
  <p>"The type of namespace name 'ProblemReport' could not be found (are you missing a using directive or an assembly reference?)"</p>
  
  <p>Obviously - I'm supposed to do something else to get this to work... just not sure what it is!</p>
  
  <p>-Adeena</p>