c# - MVC + How can i alert prompt user before Controller action -

mvc newbie here.

i want user confirmation before controller action (update record)

my code:

[httppost]     public actionresult jobhandlerupdate(int jobscheduleid, jobhandlerlist jobhandlerlist)     {         var updatejobhander = new mainjobhandler();         var item = updatejobhander.getbyid(jobscheduleid);         if (modelstate.isvalid)         {             list<string> days = jobhandlerlist.jobprocessdayofweek.split(',').tolist();             updatejobhander.update(item, days);             if(jobhandlerlist.maxinstances == 0)             {                  // here need prompt user if maxinstances entered zero-                     job disabled want processs (y/n) if yes update                     else nothing or redirect edit screen             }             return redirecttoaction("jobhandler");         }         return view(item);     } 

do need using javascript alert? or there way.

you can onclick event handler:

<input type="submit" onclick="return confirm('are sure wish submit?');" /> 

you can client-side prompts, because controller code executes on server, of course client can't access.