Jquery Ajax return success error from mvc net controller

Question

I would like to control when to reply an error message and when a success message but I am always get the error message   here is what I am trying to do      ajax                   type   POST                   data  formData                  url    Forms GetJobData                   dataType   json                   contentType  false                  processData  false                   success  function  response                                           alert  success                                        error  function  response                       alert  error      I m always get this                                       Controller             HttpPost              public ActionResult GetJobData Jobs jobData                               var mimeType   jobData File ContentType                var isFileSupported   AllowedMimeTypes mimeType                 if   isFileSupported                                    Error                     Response StatusCode    int HttpStatusCode BadRequest                      return Content  The attached file is not supported   MediaTypeNames Text Plain                                  else                                         Success                     Response StatusCode    int HttpStatusCode OK                      return Content  Message sent    MediaTypeNames Text Plain

User · Answer

Use Json class instead of Content as shown following           When I want to return an error      if   isFileSupported                Response StatusCode    int  HttpStatusCode BadRequest          return Json  The attached file is not supported   MediaTypeNames Text Plain             else                   When I want to return sucess          Response StatusCode    int HttpStatusCode OK           return Json  Message sent    MediaTypeNames Text Plain           Also set contentType   contentType   application json  charset utf-8

User · Answer

ajax       type   POST       data  formData      url    Forms GetJobData       dataType   json       contentType  false      processData  false                     success  function  response            if  response success                alert response responseText             else                  DoSomethingElse               alert response responseText                                                  error  function  response            alert  error                       Controller    HttpPost  public ActionResult GetJobData Jobs jobData        var mimeType   jobData File ContentType      var isFileSupported   IsFileSupported mimeType        if   isFileSupported                        Send  false          return Json new   success   false  responseText    The attached file is not supported      JsonRequestBehavior AllowGet             else                   Send  Success          return Json new   success   true  responseText   Your message successfuly sent     JsonRequestBehavior AllowGet                ---Supplement ---  basically you can send multiple parameters this way   Controller    return Json new                    success   true                  Name   model Name                  Phone   model Phone                  Email   model Email                                                             JsonRequestBehavior AllowGet     Html    lt script gt          ajax                   type   POST                   url    Url Action  GetData                     contentType   application json  charset utf-8                               success  function  response                        if response success                          console log response Name                         console log response Phone                         console log response Email                                                              error  function  response                        alert  error

User · Answer

When you return value from server to jQuery s Ajax call you can also use the below code to indicate a server error   return StatusCode 500   My error      Or   return StatusCode  int HttpStatusCode InternalServerError   My error      Or  Response StatusCode    int HttpStatusCode InternalServerError  return Json new   responseText    my error        Codes other than Http Success codes  e g  200 OK   will trigger the function in front of error  in client side  ajax    you can have ajax call like     ajax           type   POST           url    General ContactRequestPartial           data                HashId  id                   success  function  response                 console log  Custom message       response responseText                Is Called when Status Code is 200 OK  or other Http success code         error  function  jqXHR  textStatus  errorThrown                 console log  Custom error       jqXHR responseText     Status      textStatus     Http error     errorThrown                Is Called when Status Code is 500 InternalServerError  or other Http Error code              Additionally you can handle different HTTP errors from jQuery side like     ajax           type   POST           url    General ContactRequestPartial           data                HashId  id                    statusCode                500  function  jqXHR  textStatus  errorThrown                     console log  Custom error       jqXHR responseText     Status      textStatus     Http error     errorThrown               501  function  jqXHR  textStatus  errorThrown                     console log  Custom error       jqXHR responseText     Status      textStatus     Http error     errorThrown                              statusCode  is useful when you want to call different functions for different status codes that you return from server   You can see list of different Http Status codes here Wikipedia  Additional resources    Returning Server-Side Errors from AJAX Calls Returning a JsonResult within the Error function of JQuery Ajax Handling Ajax errors with jQuery

[jquery] Jquery Ajax, return success/error from mvc.net controller

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