How To Send Json Object (or String Data) From Javascript Xmlhttprequest To Mvc Controller

I created a web application in ASP.NET MVC and trying to call a controller through Javascript AJAX. In Jquery we can send a json object which MVC Model Binder automatically tries t

Solution 1:

You should just be able to use JSON2 to stringify it and set the Content-Type header to application/json when you do the post.

http://ajax.cdnjs.com/ajax/libs/json2/20110223/json2.js

You would do something like:

var xhr = newXMLHttpRequest();
xhr.open('POST', '/Controller/Action');
xhr.setRequestHeader('Content-Type', 'application/json');
xhr.onreadystatechange = function () {
    if (xhr.readyState == 4 && xhr.status == 200) {
        alert(xhr.responseText);
    }
}
xhr.send(JSON.stringify(myData));

Solution 2:

Here's an example. It assumes that you are using ASP.NET MVC 3.0 which has a built-in JsonValueProviderFactory. If this is not your case you could take a look at this blog post.

View model:

publicclassMyViewModel
{
    publicstring Prop1 { get; set; }
    publicstring Prop2 { get; set; }
}

Controller:

publicclassHomeController : Controller
{
    public ActionResult Index()
    {
        return View();
    }

    public ActionResult SomeAction(MyViewModel model)
    {
        return Content("success", "text/plain");
    }
}

View:

<scripttype="text/javascript">var http = newXMLHttpRequest();

    var value = '{ "prop1": "value 1", "prop2": "value 2" }';
    // It would be better to use JSON.stringify to properly generate// a JSON string/**
    var value = JSON.stringify({
        prop1: 'value 1',
        prop2: 'value 2'
    });
    **/

    http.open('POST', '/Home/SomeAction', true);
    http.setRequestHeader('Content-Type', 'application/json; charset=utf-8');
    http.setRequestHeader('Content-Length', value.length);
    http.onreadystatechange = function () {
        if (http.readyState == 4 && http.status == 200) {
            alert(http.responseText);
        }
    }
    http.send(value); 
</script>

Solution 3:

Using $.Ajax(), you can easily got the data from javascript to Controller in MVC.

For Reference,

var uname = 'Nikhil Prajapati';$.ajax({

url: "/Main/getRequestID",  // This is path of your Controller with Action Result.dataType: "json",           // Data Type for sending the datadata: {                     // Data that will be passed to Controller'my_name': uname,     // assign data like key-value pair       // 'my_name'  like fields in quote is same with parameter in action Result
      },

      type: "POST",               // Type of RequestcontentType: "application/json; charset=utf-8", //Optional to specify Content Type.success: function (data) { // This function is executed when this request is succeed.alert(data);
      },

      error: function (data) {
              alert("Error");   // This function is executed when error occurred.
      }

)};

and, Now At the Controller Side,

public ActionResult getRequestID(String my_name) {

MYDBModelmyTable=newModels.MYDBModel();
        myTable.FBUserName = my_name;
        db.MYDBModel.Add(myTable);
        db.SaveChanges();              // db object of our DbContext.cs//return RedirectToAction(“Index”);   // After that you can redirect to some pages…return Json(true, JsonRequestBehavior.AllowGet);    // Or you can get that data back after inserting into database.. This json displays all the details to our view as well.
    }

For more reference.. just visit.. Send Data from Java Script to Controller in MVC