We Keep Coding

Calling a WebAPI controller action that has 2 parameters

I have a WebAPI controller action that has 2 parameters.
How do i call this action?
With a single parameter, my code works good.
How do i call a WebAPI that has 2 parameters?
I tried couple of ways and it does not work.
I have a WebAPI controller action that has 2 parameters.
How do i call this action?
With a single parameter, my code works good.
How do i call a WebAPI that has 2 parameters?
I tried couple of ways and it does not work.
Thanks in Advance
//With a single parameter it works good:
[Route("api/Controller/GetAllVendors")]
[HttpPost]
public IEnumerable<Vendor> GetAllVendors(LoginParameters loginParam)
{
}
function LoadVendorLkup() {
alert("InVendorCall");
var loginPar = {
UserName: 'user1',
CompanyID: 'company1',
ProgramID: ''
}
$.ajax({
type: 'POST',
url: '/api/Controller/GetAllVendors',
dataType: "json",
contentType: "application/json; charset=utf-8",
data: JSON.stringify(loginPar),
/////////////////////////////////////////////////////////////////////////
//With 2 parameters , it does not work:
[Route("api/Controller/GetVendorsForSelectedHouseholdID")]
[HttpPost]
public IEnumerable<Vendor> GetVendorsForSelectedHouseholdID(LoginParameters loginParam, string hHoldID)
{
}
function LoadVendorLkupForSelectedHousehold() {
var hHoldtext = $('#txtHHold').val();
var loginPar = {
UserName: 'user1',
CompanyID: 'company1',
ProgramID: ''
}
$.ajax({
type: 'POST',
url: '/api/controller/GetVendorsForSelectedHouseholdID',
dataType: "json",
contentType: "application/json; charset=utf-8",
data: JSON.stringify(loginPar), 'hHoldID': hHoldtext,
//////////////////////////////////////////////////////
//I also tried the following:
[Route("api/controller/GetVendorsForSelectedHouseholdID/{hHoldID:String}")]
[HttpPost]
public IEnumerable<Vendor> GetVendorsForSelectedHouseholdID([FromBody()]LoginParameters loginParam,[FromUri()]string hHoldID)
{
}
function LoadVendorLkupForSelectedHousehold() {
alert("InVendorCall2");
var hHoldtext = $('#txtHHold').val();
alert("Household:" + hHoldtext);
var loginPar = {
UserName: 'user1',
CompanyID: 'company1',
ProgramID: ''
}
$.ajax({
type: 'POST',
url: '/api/controller/GetVendorsForSelectedHouseholdID?hHoldID='+ hHoldtext,
dataType: "json",
contentType: "application/json; charset=utf-8",
data: JSON.stringify(loginPar),

Multiple [FromBody] attributes on POST parameters would not work as mentioned in the documentation here.
// Caution: Will not work!
public HttpResponseMessage Post([FromBody] int id, [FromBody] string name) { ... }
The reason for this rule is that the request body might be stored in a
non-buffered stream that can only be read once.
This blog specifies that there are 3 simple methods to achieve this:
Use Both POST and GET (one parameter from post other parameter from the query string)
Create 1 model which encapsulate all values inside single model
Use JSON.Stringify to pass single JSON to API and then use JObject as parameter in web api. Then parse JSON in the web api.
There is one more option - you can also create custom binder using IModelBinder as mentioned in the documentation: https://learn.microsoft.com/en-us/aspnet/web-api/overview/formats-and-model-binding/parameter-binding-in-aspnet-web-api

Ajax call to MVC controllers

I'm trying to pass some data with ajax call to a c# mvc controller. Even though the task should be straight forward, I am unable to get the mvc controller to read the data I'm passing through the ajax call....
I've implemented the following code within my MVC controller
[HttpPost]
public string tt(string o)
{
return o;
}
[HttpPost]
public string tt2(string o)
{
return "lala";
}
And I'm triggering the following ajax calls from the browser
$.ajax({
url: "/Home/tt2",
type: "POST",
contentType: "application/json;",
data: JSON.stringify({ o: 'asdas'}),
success: function(e){console.log(e+' correct');},
error: function(e){console.log(e+' incorrect');}
});
$.ajax({
url: "/Home/tt",
type: "POST",
contentType: "application/json;",
data: JSON.stringify({ o: 'asdas'}),
success: function(e){console.log(e+' correct');},
error: function(e){console.log(e+' incorrect');}
});
As a result when running the first ajax call the result is
lala correct
And for the second ajax call, the result is
undefined correct
In the mean time these are some stuff I tried
Adding dataType: "json", to the ajax call
Changing the string data from {o: 'asdas'} to 'asdas'
Removing the JSON.stringify
Adding the charset=utf-8 to the contentType
Changing the ajax call type and MVC controller method from POST to GET to PUT
Changing the MVC controller method parameter from string to int
Removing the error method from the ajax call
Changing the data from data: {o: 'asdas'} to data: {"o":"asdas"}
Changing the data from data: {"o":"asdas"} to data: JSON.stringify({"o":"asdas"})
I know that simple string or int can be passed through the URL as query strings but it would be an issue when passing a list of objects..
Something aside is that the call is being done correctly to the URL because when I set a breakpoint within the called method, it does get triggered but the parameter always is null..
Any thoughts on how to make ajax call work?

try:
[HttpPost]
public string tt([FromBody]string o)
{
return o;
}

Your request should be like this:
$.ajax({
url: '#Url.Action("tt", "Home")',
data: {
"o": "asdasdas"
},
cache: false,
type: "POST",
success: function (response) {
},
error: function (xhr) {
}
});

ajax post data is null in controller asp.net mvc 5

I try to send a JSON object back to the server. This is my AJAX call
function SaveData() {
var model = []
debugger
$.each($('.Money'), function (i, item) {
model.push({
Money: $('.Money').eq(i).val(),
Day: $('.Day').eq(i).val(),
Note: $('.Note').eq(i).val()
});
})
$.ajax({
url: '#Url.Action("Create")',
contentType: "application/json",
async: true,
data: { partnerDeposit: JSON.stringify(model) },
type: 'POST',
dataType: 'json',
succsess: function () {
}
})}
This is the method in the controller which is being called:
enter image description here
https://i.stack.imgur.com/FqEt9.png
The problem I have is that always the json variable from above is an empty object. The success function gets called but when I debug the json var is displayed as empty.
Please tell me what I am doing wrong. Thank you.

Try adding the partnerDeposit to the JSON.stringify call like this:
$.ajax({
url: '#Url.Action("Create")',
contentType: "application/json",
async: true,
data: JSON.stringify({partnerDeposit: model}),
type: 'POST',
dataType: 'json',
succsess: function () {
}
})

I haven't found this answer anywhere else so I had to discover it through experimentation. Hopefully this will help someone.
You'll find that in your controller, it's receiving a Request.Form object and if you look in Request.Form[0] you'll find your data. The reason that there's data in the form but MVC is seeing it as null is that the key to the form element being POSTed is "" (blank).
So client side, you have to set content type properly, and precede your data with something like "myData=" + JSON.stringify(myJSONObject), where "myData" is the key name you are adding, like so:
$.ajax({
type: "POST",
url: URL,
data: "myData="+JSON.stringify(myJSONObject),
contentType: "application/x-www-form-urlencoded; charset=utf-8"
On the server side, your [HttpPost] endpoint has to have as its input a variable with the same name as the key you declared in your AJAX, like so:
`
[HttpPost]
[Authorize]
public ActionResult Index (string myData) // <-- var name matches AJAX
{
// de-serialize data into server-side object using
// JSONConvert.DeserializeObject
}
`

MVC Send list through AJAX

Okay, I've seen tons of questions posted regarding this question, but none of the answers has actually worked for me, here's my AJAX:
$.ajax({
url: "/FilterSessions/GetFilterSession",
type: "GET",
dataType: "json",
data: jsonFilters,
traditional: true,
success: function (response) {
//Haha, it's never entering here. not really.
}
});
var "jsonFilters" contains an array with the following data:
[0] = { Path: "Test", Name: "More testing", Value: "Test Value" },
[1] = { Path: "Test", Name: "More testing", Value: "Test Value" }
And this is my controller:
public ActionResult GetFilterSession(List<FilterSessionModel> jsonFilters)
{
//Do things
return Json(false, JsonRequestBehavior.AllowGet);
}
jsonFilters always remains null... I have also tried adding contentType: "application/json; charset=utf-8" to the AJAX call... but that didn't really do anything
Finally, the class FilterSessionModel is structured as follows:
public class FilterSessionModel
{
public string Path { get; set; }
public string Name { get; set; }
public string Value { get; set; }
}
Any ideas as to what I might be missing or what might be happening?
Things I've tried so far:
Setting "traditional: true", setting "contentType", using JSON.stringify and attempting to accept a string in the MVC Controller (no-go)
UPDATE: Thanks to the answer below I realized that what was missing was to send over the data with the param Id like so:
data: "{param1ID:"+ param1Val+"}"

I would try switching out the type on your action.
List<FilterSessionModel>
Pretty sure the above is not going to work, I would try something like Object.
Or possibly a string that I would then use newton json dll to push into your List of Class.
The problem boils down to your action being unable to figure out the type, assuming you are checking your data prior to the ajax get being called.
**Update due to more info. Add in the error portion and view those vars on return from your controller, also fire up fiddler and watch what your are getting for http numbers.
$.ajax({
type: "POST",
url: "Servicename.asmx/DoSomeCalculation",
data: "{param1ID:"+ param1Val+"}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function(msg) {
UseReturnedData(msg.d);
},
error: function(x, t, m, b) {
//Look at the vars above to see what is in them.
}
});

I think what you are looking for is answered here:
Passing A List Of Objects Into An MVC Controller Method Using jQuery Ajax

First off I'm making the assumption that your $.ajax is for JQuery and not some other Javascript framework. Please correct me if that's wrong.
ASP.NET MVC can actually do what you are asking it to (resolve data sent via AJAX to a List<FilterSessionModel>, but it seems to have a difficult time doing it via a GET request. It would help to know which version of ASP.NET MVC you are using, as more is required to get this working on the older versions. However, what I'm suggesting should work on MVC 3 or 4.
When you send AJAX via JQuery using a GET request and passing it a JavaScript array, this is what you are sending to the server:
http://localhost:50195/FilterSessions/GetFilterSession?undefined=&undefined=
It's no wonder the model is null because no data is actually being sent.
I believe ASP.NET can accept objects (and even arrays of objects) like this, but it won't do so with it formatted as JSON (like via JSON.stringify) as that just results in the following request:
http://localhost:50195/FilterSessions/GetFilterSession?[{%22Path%22:%22Test%22,%22Name%22:%22TestName%22,%22Value%22:%22Testing%22},{%22Path%22:%22Test%22,%22Name%22:%22TestName%22,%22Value%22:%22Testing%22}]
The way you probably want to do this is with a POST request. ASP.NET MVC will actually accept a JSON string as POST data and will decode it and resolve the model properly. Your AJAX code works fine with a couple modifications:
$.ajax({
url: "/FilterSessions/GetFilterSession",
type: "POST", //Changed to POST
dataType: "json",
data: JSON.stringify(jsonFilters), //Pack data in a JSON package.
contentType: "application/json; charset=utf-8", //Added so ASP recognized JSON
traditional: true,
success: function (response) {
alert('Success!');
}
});
The controller you posted should recognize POST data already, but in case it doesn't, a simple [HttpPost] attribute is all you need:
[HttpPost]
public ActionResult GetFilterSession(List<FilterSessionModel> jsonFilters)
{
//Do things
return Json(false, JsonRequestBehavior.AllowGet);
}

javascript or ajax call never type cast the object. . .you need to set type of the controller side parameter either string or List else you can also set the Object type. . If you modified codein that way.. .Your code definitely work !!!

$.ajax({
url: "/FilterSessions/GetFilterSession",
type: "GET",
dataType: "json",
data:JSON.stringify({ 'jsonFilters': jsonFilters}),
contentType: 'application/json; charset=utf-8',
success: function (response) {
//Do your action
}
});

MVC3 Controller not receiving any parameter values

Using JQuery, I am passing values to an action in the controller. customerId and productId are not null:
$.ajax({
type: "GET",
url: "Customer/Product/",
data: { Customer: customerID, Product: productId},
dataType: "json",
error: function (xhr, status, error) {
// you may need to handle me if the json is invalid
// this is the ajax object
},
success: function (json) {
$("#productName").innerHTML = json;
alert(json);
alert($("#startDate").innerHTML);
}
});
In MVC3 controller, i have the action:
public ActionResult Product(string Customer, string Product)
{
//both are null
}
I don't know why both are null? Please guide

$.ajax({
type: "GET",
url: "Customer/Product/",
data: "Customer="+customerID +"&Product="+productId,
dataType: "json",
error: function (xhr, status, error) {
// you may need to handle me if the json is invalid
// this is the ajax object
},
success: function (json) {
$("#productName").innerHTML = json;
alert(json);
alert($("#startDate").innerHTML);
}
});
Try this way.

MVC may be expecting a JSON string. Try using this as your data
data: JSON.stringify({ Customer: customerID, Product: productId})

If you change it to a "POST" request it should work.
However it looks like you are actually trying to just "GET" data from the server which should really be encoded in your URL e.g. mysite.com/Customer/{customer_id}/Product/{product_id}. In this case you'll probably need to change your routing rules.

I just did "File -> New Project" and just added the one controller and tried directly using:
var customerID = 42;
var productId = 4242;
$.ajax({
type: "GET",
url: "http://localhost:51622/Customer/Product",
data: { Customer: customerID, Product: productId},
dataType: "json",
error: function (xhr, status, error) {
// you may need to handle me if the json is invalid
// this is the ajax object
},
success: function (json) {
console.log(json);
}
});
It binds the values just fine, so you might want to grab fiddler or something similiar and make sure that you are actually sending values to the server.