title: Importing DLL functions in c# code
body: <p>I have a DLL, whose functions i want to use in my c# code
  Here are the functions of that DLL : </p>
  
  <pre><code>extern "C"
  {
    __declspec(dllimport)
    const char* __stdcall ZAJsonRequestA(const char *szReq);
  
    __declspec(dllimport)
    const wchar_t* __stdcall ZAJsonRequestW(const wchar_t *szReq);
  
    __declspec(dllimport)
    const BSTR __stdcall ZAJsonRequestBSTR(BSTR sReq);
  }
  </code></pre>
  
  <p>Can anyone tell me how to use it in c# project, as this dll seems to be in other language ?</p>