title: .Net webservice could not find my DLL-file
body: <p>I have a <code>.NET</code> <code>c#</code> web service.
  In the implementation of this web service, I call a function of a my <code>.dll</code> library, which 
  I am loading in the following way:</p>
  
  <pre><code>[DllImport("myLibrary.dll")]
  extern static myMethod();
  </code></pre>
  
  <p>Where do I have to put my DLL? If I use this DLL in my test project (which is <em>not</em> a Web service project), it works.</p>
  
  <p>Otherwise I have a error because it can not find the dll.</p>
  
  <p>ERROR:</p>
  
  <pre><code>System.DllNotFoundException was unhandled by user code
    Message=Unable to load DLL 'myLibrary.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E)
  </code></pre>