title: Why am I getting breakpoints in DLL code
body: <p>I have two solutions, A and B. In solution A, I have a project A1 (which outputs to a DLL). A1 is originally used only within solution A, but because of some unforeseen circumstances, one of the project in solution B ended up requiring it. </p>
  
  <p>I copied the DLL file of project A1 from solution A, to solution B, adding it as a reference. I did it in a manual manner; I have to copy and replace the DLL manually whenever there is a change in A1.</p>
  
  <p>Everything is fine until one day, I realized that I am getting breakpoints during debug. To my surprise, the breakpoints are in the class from A1. I am able to see the full codes that I wrote on solution A, including the comments. When I remove the breakpoints from there, it would come back when I debug the next time. It seemed to disappeared the next day, though.</p>
  
  <p><strong>Now my question is:</strong> Why am I able to see the full codes when I did not copy the source of A1 to solution B? My understanding is that DLLs require a decompiler to return to its code state. Even with a decompiler, it should only give me just something similar, but not exact. The most amazing part is that I can even see the all the comments that I wrote.</p>
  
  <p>I am using VS2012 Pro, using .NET 4.5.</p>