How to get JsonResults

Question

User-14642827 posted

I'm new to Json and I need to get results from another method (call another method) and Implement it (not sure what that means):

Being new to Json

public JsonResult CreateRequest(List<CertQuestionAnswer> certQuestionAnswers, List<Add_Facility> requestFacilities)
        {
            string returnValue = "success";

            // how do you call this method?
            InsertCertificationQuestionarieAnswer(parameter1, parameter2, parameter3); // am I on the correct path?

            return Json(returnValue, JsonRequestBehavior.AllowGet);
        }

Answer 1

User-1171043462 posted

If you want to return string value then use ContentResult

public ContentResult CreateRequest(List<CertQuestionAnswer> certQuestionAnswers, List<Add_Facility> requestFacilities)
        {
            string returnValue = "success";

            // how do you call this method?
            InsertCertificationQuestionarieAnswer(parameter1, parameter2, parameter3); // am I on the correct path?

            return Content(returnValue);
        }

Answer 2

User-369506445 posted

Hi

If your inner method return a value ,you can get it an put it instead of return value in last line

If your inner class does not return a value and it is a void ,it's better use a try catch block and finally return success or failed

public JsonResult CreateRequest(List<CertQuestionAnswer> certQuestionAnswers, List<Add_Facility> requestFacilities)
        {
            string returnValue = "";

            // how do you call this method?
      try{     
           InsertCertificationQuestionarieAnswer(parameter1, parameter2, parameter3); // am I on the correct path?
           returnValue="success";
}catch{
returnValue=failed;
}
            return Json(returnValue, JsonRequestBehavior.AllowGet);
        }

Answer 3

User-369506445 posted

Also for more details you can follow below links

https://weblogs.asp.net/gunnarpeipman/how-to-make-ajax-requests-to-asp-net-mvc-application-using-jquery

http://dotnetmentors.com/mvc/jquery-ajax-call-with-jsonresult-in-asp-net-mvc.aspx

http://www.codedigest.com/posts/39/using-jquery-ajax-methods-to-get-json-result-from-controller-in-aspnet-mvc

Answer 4

User1520731567 posted

Hi bthJ6,

 // how do you call this method?
            InsertCertificationQuestionarieAnswer(parameter1, parameter2, parameter3); // am I on the correct path?

According to your code, do you want to call a function and then change the returnValue according to this function result?

If so,you could add some if...else to judge the returnValue.

Just like:

public JsonResult CreateRequest(List<CertQuestionAnswer> certQuestionAnswers, List<Add_Facility> requestFacilities)
        {
            string returnValue = "success";

            // how do you call this method?
            var flag=InsertCertificationQuestionarieAnswer(parameter1, parameter2, parameter3); // am I on the correct path?
            if(flag)
            {
             returnValue = "success";
            }
            else
            {
             returnValue = "false";
            }

            return Json(returnValue, JsonRequestBehavior.AllowGet);
        }

And then the result will return to the success callback function of the ajax：

        $.ajax({
            type: "GET",
            url: "/XXX/CreateRequest",
            dataType: "json",
            data: {
                     ...
                },
            success: function (result) {
             if(result.returnValue=="success")
              {
                  //do something according to your need
               }
             else
              {
                  //do something according to your need
               }         
            }
          
        });

Best Regards.

Yuki Tao