MVC :: Cannot Get JSON Result Back From Controller
Feb 12, 2010
I have been at this for hours and am pretty stuck. I am using MVC2 with VS2010 Beta 2.
Here is my javascript from the view:
[Code]....
Here is my controller code:
[Code]....
I can set a breakpoint in the GetMember method and it does receive the Member_ID parameter correctly. It also correctly returns a member object from my repository (dpR). The function in $.getJSON call that is supposed to receive this result does nothing however. There are no exceptions or javascript errors. It is just silently dying.
I have a simple model where a Person has Gifts. I have a view which is a list of Gifts belonging to one Person.
My problem is with the Create action for a new Gift. I want it to default to the PersonID that we are already viewing the list of Gifts for. I tried simply passing the last PersonID (they are all the same)
Html.ActionLink("Create New", "Create", new { id = Model.Last().PersonID }) which works fine if there is already at least one Gift for that person but if this is the first Gift I don't have a value.
My Gift List controller knows the PersonID I want to pass but the view doesn't.
How do I pass this PersonID from my Gift List controller to my Gift Create controller via the Gift List view? Or is there a better way to do this?
I have a controller that uploads a file. I would like to return a json result with bool success (if successfully uploaded otherwise false) and message (this could be error message that occured OR link to a file OR link to an image, depending on what was uploaded).What's the best way to approach thisI have this
public class UploadedFile { public bool Success { get; set; } public string Message { get; set; } }
then In my controller I would set Success to true/or/false and Message to <a href OR <img am i on the right track?How would i then parse this in the view so that when image it will show an image, if link show a link, if error simply alert error.
I'm creating an inbox system for my website which allows basic communication between users. I'm fetching the results with jquery calling a webservice. Then I'm using a jquery template engine to render the results to the screen. So far this all works good. but now I want to add some click functions on certain parts of inbox messages. For example I want the title of the message to be clickable so it will expand/collapse the fulltext which is hidden in a div beneath it.
But I can't seem to use the jquery selectors on this dynamic json result. It works when I put the function in the href tag itself but I don't really want to. I also tried adding the function after the success function but no luck either. Is it possible at all to use selectors with a template engine? I hope I made myself clear otherwise feel free to ask more information.
I have a client side code that creates an AJAX request to the server (using jquery). My problem is that one of the json results called 'name' gets spaces appended to the value.
For example: In the DB the value is "Hello" but when i get the request back using ajax it comes out as "Hello "
It is ALWAYS the one value that gets spaces appended, even on calls to different functions in the web service. Ive tried changing its name on the AJAX response, but the same thing happened.
Ive gone and ran queries directly against the web service by navigating to its address using my browser, and executed the query manually, and it comes back properly ("Hello").
Ive also tested this in IE, FF, Opera, Chrome and using different computers with the same results.
I have DataReader that holds the results from a stored procedure caal. The results consist of two fields ...
UserID UserName
Normally I bind these results to an ASP.NET dropdownlist control ...
ddlUserList.DataSource = rdr // rdr is the DataReader ddlUserList.DataTextField = "UserName" ddlUserList.DataValueField = "UserID" ddlUserList.DataBind()
However I am now trying to accomplish the same thing using jQuery AJAX. What I am stuck on is how to manually convert the dataset held in the DataReader to JSON. How are multiples values separated? Does this look correct?
I realize there are libraries out there such as JSON.NET to handle the serialization but I am in the learning stage now and want to make sure I understand everything from the bottom up.
have this site that has an api that can provide city name if I send my zip code as a parameter. http://www.postnummersok.se/api?q=16447the result is returned as a json object. Now i just want to read the result in my js function.I have tried the following but it always returns null:
I have some textboxes and a table of data created client side that I want pass to a controller as JSON.
I want to use Jquery to enumerate the table.
Assume I have 2 textboxes called name and age. Assume a table with 2 columns. one column with class called phonetype and one column class called phonenumber.
I have asp.net mvc application. i want to configure the object in jquery and want to pass it to the the action of controller . where as in my script i am using this for configure data for the ajax call:
[Code]....
it does not calls to action in controller. i think here :
var json = $.toJSON(peform);
is not working as expect. is it need to add any js file to reference ? or mistake in syntax?
I have a list of items(surveys) displayed on my home page. When I click the edit button for a particular item I have a modal pop up with the items details to edit. When the user clicks Save I submit the form via ajax. Depending on whether ModelState.IsValid == true I want to update the modal with validation information or close the modal and update the list of items with the new information.
This is how I am submitting the form:
[Code]...
My Questions
The only thing I can think to do is return JSON from my controller with a flag indicating the state of the ModelState.IsValid and the corresponding partial that I should show.
1) How would I do this?
2) Is there a better way?
Update
I found this: [URL]
but it seems more likely that I am going about the whole thing incorrectly.
I have the following javascript. Problem is if I enter one row in the table "ingredients" but I am getting 2 rows in the resulting pass to controller action after seralising into my C# object. But the second object is null? I checked the javascript and the variable "cnt" is 1 not 2. Why would that be?
[code]
$("#Save").click(function () { var title = $("#recipetitle").val(); var category = $("#category").val(); var preptime = $("#prepTime").val(); var preptimeperiod = $("#lstPrepTime").val(); var cooktime = $("#cookTime").val(); var cooktimeperiod = $("#lstCookTime").val(); var rating = $("#rating").val(); var method = $("#method").val(); var jsontext = '{ "RecipeTitle": "' + title + '",'; jsontext += '"CategoryID":' + category + ','; jsontext += '"PrepTime":' + preptime + ','; jsontext += '"PrepTimePeriod":"' + preptimeperiod + '",'; jsontext += '"CookTime":' + cooktime + ','; jsontext += '"CookTimePeriod":"' + cooktimeperiod + '",'; jsontext += '"Rating":' + rating + ','; jsontext += '"Method":"' + method + '",';....................
i am using json and jquery to send a form to the controller like below, when i click submit validation occers but line is executed even if form is invlid. How can i tell if form validation failed or succeded using javascript?
Being new to ASP.NET I have run into trouble building my own Whack-a-mole program. I think my problem comes from using Buttons, which by themselves send post backs to the server, making the software unusable. The looks are in place, making new buttons show up in the grid, in different places by random. However, when a button is pushed - the score doesn't change (which I feel is strange).
Not so strange is that the Button doesn't work since it sends post back to the server - reloading the UpdatePanel. I think I should use a different controller like the CheckBox and style it hard using CSS (which isn't a problem). Is this the correct way to go, or should I make use of JavaScript AJAX instead?
Note to self: This technique shouldn't be used in a public application since it put too much unwanted pressure on the web server.
This is probably something simple. The following JQuery call is executing and calling the controller. The controller is executing correctly. I used the sample data that's commented out to verify that the templates were working also. However, the success function is not executing in the browser. Any thoughts or other ways I can debug this?
I have the following to get the Json abject passed from the controller and populate the various textboxes in the view. However, nothing is happening even though controller is passing a valid Json object. What is wrong with this code?
<script language="javascript" type="text/javascript"> $(document).ready(function() { var url = '<%=Url.Action("DropDownChange") %>'; $("#vendorID").change(function() { var selectedID = $(this).val(); if (selectedID != "New Vendor Id") { //$.post('Url.Action("DropDownChange","Refunds")', function(result) { $.post(url, { dropdownValue: selectedID }, function(result) { alert(selectedID); $("#name").val(result.Name); $("#city").val(result.City); $("#contact").val(result.Contact); $("#address2").val(result.Address2); $("#address1").val(result.Address1); $("#state").val(result.State); $("#zip").val(result.Zip); }); } }); }); This is the code in my controller; public JsonResult DropDownChange(string dropdownValue) // This action method gets called via an ajax request { if (dropdownValue != null && Request.IsAjaxRequest() == true) { paymentApplicationRefund = cPaymentRepository.PayableEntity(dropdownValue); paymentApplicationRefund.Address1.Trim(); paymentApplicationRefund.Address2.Trim(); paymentApplicationRefund.Name.Trim(); paymentApplicationRefund.City.Trim(); paymentApplicationRefund.Contact.Trim(); paymentApplicationRefund.State.Trim(); paymentApplicationRefund.Zip.Trim(); return Json(paymentApplicationRefund,"application/json"); } else { return null; } }
i want to use the weather web service that provided for free from webservicex so i have added the service to my ASP.net web site [URL] in the code behind i have defined an object of this service and this object require the country and city name to get the result back i gave the
city name :amman country : jordan
but i dont know how can i get back the result? is there any function i forgeted?
Basically I want to have a page do a search on first name(textbox), last name(textbox), gender(dropdown). and return a grid result back. it's so easy in web forms. how do i do in mvc? So far I have: Controller
[Code]....
View: Search.aspx
[Code]....
I didn't modify the route. When I put in [URL], it says resource not found.
I am creating one Json array object and trying to pass it in MVC controller action method but i am getting null paramerter; as per my knowledge json only maps .net primitive datatypes.... so it assign null value.
Note: when i have look at request object i found that there are three parameter of created array. But how to get that value as parameter of function?
This may seem simple to a seasoned coder, but I'm all wet-eared and new to MVC, and trying to wrap my head around it is driving me nuts. I have completed the Nerd Dinner and MVC Music Store tutorials, and seem to be grasping the basics... Well, sort of... It just seems that every new idea I have requires hours of searching with Google.
As it stands at the moment, I have a static DateTime field that is populated by using DateTime.Now. What I need to implement is a master TextBox (JQueryUI DatePicker) at the top of the View that will enable the user to overwrite said DateTime.Now if required.
Here is a hypothetical situation:
Controller
[Code]....
Site.Master
[Code]....
View
[Code]....
I thought of using a variable to override the default date if the user selects a master date, but can't figure out how to implement it.
I can get it to work if I use a static string, like so:
[Code]....
Is there any way to pass the value of the master datepicker (txtDateTime) from the View back to the Controller? I've heard mention of TempData, but can't seem to find a similar scenario.
I'm sure I'm just missing something really obvious, so if anyone could explain it to me really s-l-o-w-l-y, that would be cool.
I'm praying that this isn't another of those situations where "MVC doesn't work that way" or "It needs more cowbell", 'cause then I'll pack it all in and go play WoW D:
We have an exisiting Web Service which receives SOAP requests and returns the data accordingly. However, we have a new project which requires the same information but the Android SDK doesn't support SOAP so we need to use JSON. As JSON is just a data container format, I need to write a new module to replace the SOAP WSDL which receives a querystring from the Android app and then processes the data and returns it in a JSON packet. The problem is that having never used JSON I'm unsure as to how I return the data to the app in JSON format. Does anyone have any examples I can look at in VB.Net or C#?
I have following situation - I am pasing user info object from Controller to View. It contains GUID UserID, which i dont want to be seen on page. So I removed every Html.LabelFor(model => model.UserID), Html.TextBoxFor(model => model.UserID) etc... from generated View source. And because of this when Html.BeginForm() returns that object back to Controller all values is there but UserID is lost??
If I leave Html.LabelFor(model => model.UserID), Html.TextBoxFor(model => model.UserID) etc.. in View everything is fine. But I dont want to show UserID? Where is the problem here?
