title: Use a in FoxPro written DLL in a C# windows-forms-application
body: <p>I have a <code>single-threaded COM DLL</code> built and written in <code>VisualFoxPro</code> and I'd like to use the procedures from the dll in a <code>C#</code> win-forms-application.</p>
  
  <p>Now it ain't a problem to add a reference to the DLL, but if I want to use the DLL like I usually do it by</p>
  
  <pre><code>using System;
  </code></pre>
  
  <p>etc, the newly referenced DLL won't show up.</p>
  
  <p>Is there a possibility to properly reference or include a VFP-written DLL?</p>
  
  <p>And to call the procedures from it then?</p>
  
  <p>Or do I need to import the DLL from my project, reference it from there and do I need to change something in my VS then?</p>
  
  <p>Sadly my research didn't bring any results, only the reverse way, which doesn't help me.</p>