C # display PDF files, winform open PDF files and display them in the form. If the form is closed, an error is returned. C # display the PDF file. winform open the PDF file and display it in the form.

C # display the PDF file. winform opens the PDF file and shows how to use the PDF file in the form. For more information, see this address. I only collect the solution for error reporting after the form is closed

  //   handle  Program  errors after PDF is disabled  [system. runtime. interopservices. dllimport ( "  ole32.dll  "  )]   static   extern   void   cofreeunusedlibraries ();   private   void  form=formclosing ( Object   sender, formclosingeventargs e) {axacro%1.dispose ();  ///   system. windows. forms. application. doevents ();   cofreeunusedlibraries () ;} 

reference: http://bbs.csdn.net/topics/320030490#post-380643137