title: Visual Studio 2015 - Class Wizard in C++
body: <p>When I right click my project and go to Class Wizard I'm met with the following error:</p>
  
  <p>"The solution's source code database may not have been opened. Please make sure the solution is not open in another copy of Visual Studio, and that its database file is not read only."</p>
  
  <p><a href="https://i.stack.imgur.com/f2leo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/f2leo.png" alt="VS Error Message"></a></p>
  
  <p>What I've tried so far:</p>
  
  <ul>
  <li>Creating a new project</li>
  <li>Restarting Visual Studio</li>
  <li>Restarting PC</li>
  <li>Repairing Visual Studio</li>
  <li>Reinstalling Visual Studio</li>
  <li>Installing MS SQL Server Compact 3.5</li>
  <li>Deleting the folder: C:\Users\Jacob\AppData\Roaming\Microsoft\VisualStudio\14.0</li>
  </ul>
  
  <p>None of these have had any effect, and I'm finding very few pages online where others have had this issue. I am totally at a loss on what to do next.</p>
  
  <p>If anyone has any ideas, I would really appreciate them.</p>