c# - The parameters dictionary contains a null entry for parameter 'testId' of non-nullable type 'System.Int32' -

i'm trying call action in controller:

using url: http://localhost:5345/managetest/details/5

[authorize] public class managetestcontroller : controller {  public actionresult details(int testid)     { 

the parameters dictionary contains null entry parameter 'testid' of non-nullable type 'system.int32' method 'system.web.mvc.actionresult details(int32)' in 'mamadmin.controllers.managetestcontroller'. optional parameter must reference type, nullable type, or declared optional parameter. parameter name: parameters

that looks you're trying map default route, is:

routetable.routes.maproute(             name: "default",             url: "{controller}/{action}/{id}",             defaults: new { controller = "home", action = "index", id = urlparameter.optional }); 

to that, change parameter name in actionresult id:

public actionresult details(int id) 

otherwise you'd have use url:

 http://localhost:5345/managetest/details?testid=5