Error 21 The type or namespace name 'JsonValueProviderFactory' could not be found (are you missing a using directive or an assembly reference?)

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I have already added system.web.mvc reference and system.web.mvc.dll in bin ..But when i am using following code in global.asax it is giving above error in MVC2

protected void Application_Start()<br />
       {<br />
           AreaRegistration.RegisterAllAreas();<br />
           RegisterRoutes(RouteTable.Routes);<br />
           ValueProviderFactories.Factories.Add(new JsonValueProviderFactory());<br />
       }

Plz help what i am missing???.tthis JsonValueProviderFactory() is giving error

Posted 10-Feb-14 20:15pm

Member 10435696

Updated 10-Feb-14 20:17pm

v2

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Sampath Lokuge · Accepted Answer · 2014-02-10T21:27:00

Solution 1

Please try is as below.

C#

protected void Application_Start()
        {
          AreaRegistration.RegisterAllAreas();

          RegisterGlobalFilters(GlobalFilters.Filters);
          RegisterRoutes(RouteTable.Routes);

         //Remove and JsonValueProviderFactory and add JsonDotNetValueProviderFactory
            ValueProviderFactories.Factories.Remove(ValueProviderFactories.Factories.OfType<JsonValueProviderFactory>().FirstOrDefault());

      ValueProviderFactories.Factories.Add(new JsonDotNetValueProviderFactory());
        }

Please read the below mentioned article to get more details about how to configure JsonValueProviderFactory using Json.Net.

JsonValueProviderFactory using Json.Net

UPDATE

This is a sample which I extracted from my project.Please change it according to your situation.

JS

$.ajax({
                               url: "/PetBooking/GetSelectedCategoryTypeServices",
                               dataType: 'json',
                               data: { providerKey: '<%:Model.Provider.Key%>', serviceCategoryTypeId: serviceCategoryTypeId },
                               success: function (data) {

                                   $("#ddlService").fillSelect(data);
                                   whenOnlyService();
                                   $("#ddlService").sb("refresh"); //for refresh after Ajax call
                                   $('#ddlService').trigger('change');
                                   HideLoader();
                               }
                           });

Action method

SQL

[HttpGet]
   public JsonResult GetSelectedCategoryTypeServices(string providerKey, string serviceCategoryTypeId)
   {

       return Json(defaultItems.Union(items), JsonRequestBehavior.AllowGet);
   }

Posted 10-Feb-14 21:27pm

Sampath Lokuge

Updated 11-Feb-14 4:33am

v2

Comments

Member 10435696 11-Feb-14 4:37am

I am getting the same error with this also...It gives red mark on JsonDotNetValueProviderFactory()..

Sampath Lokuge 11-Feb-14 4:40am

Please follow the steps of the above article which I shared with you.

Member 10435696 11-Feb-14 5:17am

I have followed the steps...Getting error in JsonDotNetValueProviderFactory class->
Unexpected character encountered while parsing value: U. Path '', line 0, position 0.

Getting Error in This Line-

return String.IsNullOrEmpty(bodyText) ? null : new DictionaryValueProvider<object>(JsonConvert.DeserializeObject<expandoobject>(bodyText, new ExpandoObjectConverter()) ,
CultureInfo.CurrentCulture);

Sampath Lokuge 11-Feb-14 5:20am

Yep,then your problem with the 'bodyText' value.May be there is something which doesn't support by the json.net.Please check that.

Member 10435696 11-Feb-14 6:12am

My view -><input type="text" name="USER_NAME" id="USER_NAME" />

<input type="text" name="MOBILE_NO" id="MOBILE_NO" />

<input type="text" name="EMAIL_ID" id="EMAIL_ID"/>

<input type="button" id="submitButton" value="Save"/>

Now on submit button->
<script type="text/javascript">
$(function () {
var submitButton = $("#submitButton");
// var infoForm = $("#infoForm");
// alert(infoForm);
// Attach event handler to submit button
submitButton.click(function () {
SubmitInfo();
});
});
</script>

<script type="text/javascript">
function SubmitInfo() {
alert("in fun");
$.ajax({
url: "User/Index",
type: 'post',
datatype:'json',
contentType: "application/json;charset=utf-8",

data: "{'USER_NAME':'" + escape(USER_NAME.val()) + "', 'MOBILE_NO':'" + escape(MOBILE_NO.val()) + "' ,'EMAIL_ID':'" + escape(EMAIL_ID.val()) + "'}",

success: function (data) {
alert("fff");
if (data) {
// Clear the input tags

formContainer.find("input[type='text']").each(function (i, element) {
$(this).val('');
});
}
alert("giii");
alert(data.Message);
},
error: function (jqXHR, textStatus, errorThrown) {
alert(errorThrown);
}
});
}
</script>

Plz help me to resolve this issue..Does mvc2 support json datatype.Bec when i use 'data' as mentioned above..It dosnt rediect to above url

Sampath Lokuge 11-Feb-14 6:31am

What happened to your earlier question ?

Member 10435696 11-Feb-14 6:45am

Actually I was trying to send data through json..It was not working..Then i found that mvc2 doesnt support jsondata type and to achieve it we need to add JsonValueProviderFactory..Bt that is also giving error..
What i have posted is related to this issue only..

Member 10435696 11-Feb-14 7:07am

I am not able to get the response from controller to view in success function???

Sampath Lokuge 11-Feb-14 7:55am

Can you put your Action method also ?

Member 10435696 11-Feb-14 8:04am

Hey i have resolved it...Just look at my solution..Only 1 issue is pending that the way i am sending my textbox data to controller,I jst dont want to do that way..jst have a look & help me to resolve my last issue...

<fieldset id="infoForm">

<input type="text" name="USER_NAME" id="USER_NAME" />

<input type="text" name="MOBILE_NO" id="MOBILE_NO" />

<input type="text" name="EMAIL_ID" id="EMAIL_ID"/>

<input type="button" id="submitButton" value="Save"/>

</fieldset>

<script type="text/javascript">
$(function () {
var submitButton = $("#submitButton");
var infoForm = $("#infoForm");
// var infoForm = USER_NAME=USER_NAME.val()&MOBILE_NO==MOBILE_NO.val()&EMAIL_ID==EMAIL_ID.val();

alert(infoForm);
// Attach event handler to submit button
submitButton.click(function () {
SubmitInfo(infoForm);
});
});
</script>

<script type="text/javascript">
function SubmitInfo(formContainer)
{
alert("in fun");
alert(formContainer.serialize());
$.ajax({
url: "User/Index",
type: 'post',
// contentType: "application/json;charset=utf-8",
dataType: "json",
data: formContainer.serialize(),
// ------ I WANT THIS WAY----But this doesnt work//
// data: "{'USER_NAME':'" + escape(txtname.val()) + "', 'MOBILE_NO':'" + escape(txtmobile.val()) + "' ,'EMAIL_ID':'" + escape(txtemail.val()) + "'}",

success: function (data) {
alert("fff");
if (data.IsSuccess) {
// Clear the input tags
formContainer.find("input[type='text']").each(function (i, element) {
$(this).val('');
});
alert(data.data);
$('#table').dataTable().fnAddData(data.data);
alert("again");
filltable();
}
alert("giii");
alert(data.data);
},
error: function (jqXHR, textStatus, errorThrown) {
alert(errorThrown);
}
});
}
</script>

My controller action mthod

[HttpPost]
public JsonResult Index(User model)
{
if (ModelState.IsValid)
{
JArray JsonArray = new JArray();
JObject jo = new JObject();
User puser=new User();
puser.USER_NAME = model.USER_NAME.Trim();
puser.EMAIL_ID = model.EMAIL_ID.Trim();
puser.MOBILE_NO = model.MOBILE_NO.Trim();
List<user> tUser = new List<models.user>();
tUser.Add(puser);

JsonArray = (JArray)JToken.FromObject(tUser);

jo["Message"] = "Data Saved Succeffully";
jo["data"] = JsonArray;

var response = new Response(true, "Contact Successfully Submitted",jo["data"].ToString());

return Json(response);

}
else
{
return Json(false);
}
}
}

My issue is that i want to pick value from each textbox and then send whole data to contoller..I dont want to use that fieldset method mentioned above...

Sampath Lokuge 11-Feb-14 8:14am

Please change your json out is as this :
Json(response, JsonRequestBehavior.AllowGet);

Sampath Lokuge 11-Feb-14 8:19am

Why do you need to send that way ?

Sampath Lokuge 11-Feb-14 10:34am

Please check my 'UPDATE' section above.I have put a sample for you.

Member 10435696 11-Feb-14 23:47pm

Thanks for replying..I want to change this bec i dont know how i will pick values of dropdown selected item through this method.

Member 10435696 11-Feb-14 23:53pm

can u share your model class

Member 10435696 12-Feb-14 1:32am

Thanks..I have resolved my issue

Sampath Lokuge 12-Feb-14 2:38am

Glad to hear that ,you sorted out the problem.Good Luck. :)

Member 10435696 12-Feb-14 5:39am

http://www.codeproject.com/Questions/725359/datatable-in-mvc2-not-working
Plz check above link