Application. threadexception + appdomain. currentdomain. unhandledexception

Static   Class  Program {  ///   <Summary>          ///  ApplicationProgram.  ///   </Summary>  [Stathread]  Static   Void  Main () {application. threadexception + =Application_threadexception; application. setunhandledexceptionmode (unhandledexceptionmode. catchexception); appdomain. currentdomain. unhandledexception + = Currentdomain_unhandledexception; application. enablevisualstyles (); application. setcompatibletextrenderingdefault (  False  ); Application. Run (  New  Mainform ());}  ///   <Summary>          ///  Handle unprocessed exceptions in the application domain (non-UI thread exceptions) ///   </Summary>          ///   <Param name = "sender"> </param>          ///   <Param name = "E"> </param>          Static   Void Currentdomain_unhandledexception ( Object  Sender, unhandledexceptioneventargs e ){  Try  {Exception ex = E. exceptionobject As Exception; MessageBox. Show (ex. Exception. Message );}  Catch  {}}  ///   <Summary>          ///  Unhandled application exception (ui thread exception)  ///   </Summary>          ///   <Param name = "sender"> </param>          ///   <Param name = "E"> </param>          Static  Void Application_threadexception ( Object  Sender, threadexceptioneventargs e ){  Try  {MessageBox. Show (E. Exception. Message );}  Catch  {}}} 

Note the following:CodeApplication. Run (New mainform (); only one application. Run code can be executed here, if you write the code as follows:

 
Application. Run (NewSplashscreenform (); application. Run (NewMainform ());
 

If an unhandled exception (ui exception or non-UI exception) occurs in mainform, the above exception handler cannot be captured.