c# - Trying to throw a BadRequest to my ExceptionFilterAttribute -

currently log our errors using custom attribute filter this:

public class logexceptionfilterattribute : exceptionfilterattribute {      // private properties     private readonly logprovider _logger;      /// <summary>     /// our default constructor     /// </summary>     /// <param name="logger"></param>     public logexceptionfilterattribute(logprovider logger)     {         this._logger = logger;     }      /// <summary>     /// invoked when exception has been thrown     /// </summary>     /// <param name="context">the context</param>     public override async void onexception(httpactionexecutedcontext context)     {          // our user         var requestcontext = context.request.getrequestcontext();         var user = requestcontext.principal.identity;          // create our response         var message = await _logger.error(context.exception, user);         var content = new httpresponsemessage         {             content = new stringcontent(message),             statuscode = getstatuscodefromexception(context)         };          // assign our response our context         context.response = content;     }      /// <summary>     /// gets status code error     /// </summary>     /// <param name="context">the context</param>     /// <returns></returns>     private static httpstatuscode getstatuscodefromexception(httpactionexecutedcontext context)     {          // cast exception httpexception         var exception = context.exception httpexception;          // if don't have exception         if (exception != null)         {              // return httpexception code             return (httpstatuscode)exception.gethttpcode();         }          // return internal server error         return httpstatuscode.internalservererror;     } } 

i want throw bad request inside code (not in controller), tried :

throw new httpexception(400, "model not valid because: " + string.join(environment.newline, results.select(s => s.errormessage).toarray())); 

i hoping pick correct statuscode instead returns 500. know how can modify code gets correct 400 code?