Receive JSON data from MVC Controller via XMLHTTPRequest

Question

I want to get the JSON data from MVC Controller.

NOTE: I am calling Controller through XMLHTTPRequest.Send(data).

The Controller is returning the JSON data, but I don't know how to get that data if we are using XMLHTTPRequest.

I am not using Ajax calls due to some reasons. But is it possible to get it through an XMLHttpRequest or response? If so, kindly help me..

Example for the controller is below. From this, I want to get the FileName and FilePath.

    public JsonResult SaveAttachments()
    {
        try
        {

            .......
                }
            }
            return new Program1.WebClient.App_Start.BaseController.WrappedJsonResult
            {
                Data = new
                {
                    isSuccess = true,
                    CusEvent = "close",
                    CusMsg = "Attachment file upload successful",
                    FileName = fileName,
                    FilePath = filePath
                }
            };
        }
        catch (Exception ex)
        {
            throw new Exception("File upload failed. ");
        }

    }

with a simple search stackoverflow.com/questions/22528696/… — Luca
– Luca, Commented Aug 21, 2015 at 9:34

Quan Nguyen · Accepted Answer · 2015-08-21 09:31:54Z

0

You can try with XMLHttpRequest.responseText and manipulate on it.

answered Aug 21, 2015 at 9:31

Quan Nguyen

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4 Comments

Vikash Over a year ago

Actually, I have not used this XMLHttpRequest before. I want to know whether the responseText will get the Json returned from the MVC Controller?

Vsevolod Goloviznin Over a year ago

@Vikash you would probably need to manually parse the string using JSON.parse method

Vikash Over a year ago

xhr.onreadystatechange = function () { if (xhr.readyState == 4 && xhr.status == 200) { var myArr = JSON.parse(xhr.responseText); } } I tried like the above.. It throws an error in the console saying that Uncaught InvalidStateError: Failed to read the 'responseText' property from 'XMLHttpRequest': The value is only accessible if the object's 'responseType' is '' or 'text' (was 'json').

Quan Nguyen Over a year ago

before you call XMLHTTPRequest.Send(data), try to set type of responseType prop is json like this: XMLHTTPRequest.responseType = "json", after receiving data, then use JSON to parse it. Tell me it if it works.

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