I'm getting started with simple signalR application. When user puts his "name" and "room". It is sent to my hub
//This is Index page
public async Task<ActionResult> OnPost()
{
UserConnection userConnection = new()
{
Name = UserInput,
Room = JoinRoomInput
};
await _hubConnection.SendAsync("JoinRoom", userConnection);
return RedirectToPage("ChatGroup");
}
my chat looks like this
public class ChatHub : Hub<IChatClient>
{
private readonly string _botUser;
public ChatHub()
{
_botUser = "MyChat Bot";
}
public async Task JoinRoom(UserConnection userConnection)
{
await Groups.AddToGroupAsync(Context.ConnectionId, userConnection.Room);
await Clients.Group(userConnection.Room).ReceiveMessage(_botUser, $"{userConnection.Name} has joined {userConnection.Room}");
}
public async Task SendMessage(UserConnection userConnection, string message)
{
await Clients.Group(userConnection.Room).ReceiveMessage($"{userConnection.Name} : ", message);
}
}
So then, the use posts his details and hit joinroom. He is redirected to another razor page called Chatgroup.In this page, He should get the message as defined in "JoinRoom" in ChatHub.
//This is Chatgroup page
private readonly HubConnection _hubConnection;
public List<string> ChatMessages { get; set; }
public ChatGroupModel(HubConnection hubConnection)
{
_hubConnection = hubConnection;
}
public void OnGet()
{
_hubConnection.On<string>("ReceiveMessage", (message) => //Breakpoint hits here
{
ChatMessages.Add(message); // When placed a breakpoint here, It is skipped.
});
}
I'm getting ChatMessages is Null error.
So my question is how will my client side code _hubConnection.On<> get the response from chathub?
I think this is the issue.
I've registered my signalr in startup class like this
services.AddTransient<HubConnection>((ChatClient) => {
var hubConnection = new HubConnectionBuilder().WithUrl("https://localhost:44389/chathub").Build();
hubConnection.Closed += async (error) =>
{
await Task.Delay(new Random().Next(0, 5) * 1000);
await hubConnection.StartAsync();
};
hubConnection.StartAsync();
return hubConnection;
});
I get a null exception error in my razor page. I think it's because _hubConnection.On<>... skips chatmessage.add.
#foreach(var messages in Model.ChatMessages) //ChatMessages is Null
{
<div>
#messages
</div>
}
I've declared a System.Timers.Timer inside an Api Controller.
Next there is an Action that gets called by a Javascript client and its task is to make every second an HTTP GET request to an external server which sends back a JSON.
Then the JSON gets sent to the Javascript client via WebSocket.
Also I've created another Action that stops the timer when being called.
[Route("api")]
[ApiController]
public class PositionController : ControllerBase
{
private System.Timers.Timer aTimer = new System.Timers.Timer();
// ...
// GET api/position/state
[HttpGet("[controller]/[action]")]
public async Task<string> StateAsync()
{
try
{
Console.WriteLine("In StateAsync (GET)");
string json = "timer started";
aTimer.Elapsed += new ElapsedEventHandler(async (sender, args) =>
{
json = await Networking.SendGetRequestAsync("www.example.com");
Console.WriteLine($"Json in response:");
Console.WriteLine(json);
await _hubContext.Clients.All.SendAsync("ReceiveMessage", json);
});
aTimer.Interval = 1000;
aTimer.Enabled = true;
Console.WriteLine("----------------------------------");
return json;
}
catch (HttpRequestException error) // Connection problems
{
// ...
}
}
// GET api/position/stopstate
[HttpGet("[controller]/[action]")]
public async Task<string> StopStateAsync()
{
try
{
Console.WriteLine("In StopStateAsync (GET)");
string json = "timer stopped";
aTimer.Enabled = false;
Console.WriteLine("----------------------------------");
return json;
}
catch (HttpRequestException error) // Connection problems
{
// ...
}
}
// ...
}
The problem is, since ASP.NET Controllers (so .Net Core ones?) gets instancieted for every new request, when I call the Stop timer method, the timer doesn't stop because it's not the right Timer instance. So the system continues to make HTTP requests and Websocket transfers...
Is there a way to save and work on the Timer instance I need to stop from a different Controller instance or can I retrieve the original Controller instance?
Thanks in advance guys :)
You should really let your controllers do "controller" things. Running a timer in a controller breaks a controller's pattern.
You should look in to implementing an IHostedService that when injected will maintain a timer.
Here is a quick example:
TimerController.cs
[ApiController, Route("api/[controller]")]
public sealed class TimerController : ControllerBase
{
private readonly ITimedHostedService _timedHostedService;
public TimerController(ITimedHostedService timedHostedService)
{
_timedHostedService = timedHostedService;
}
// Just a tip: Use HttpPost. HttpGet should never change the
// state of your application. You can accidentally hit a GET,
// while POST takes a little more finesse to execute.
[HttpPost, Route("startTimer/{milliseconds}")]
public IActionResult StartTimer(int milliseconds)
{
_timedHostedService.StartTimer(milliseconds);
return Ok();
}
[HttpPost, Route("stopTimer")]
public IActionResult StopTimer()
{
_timedHostedService.StopTimer();
return Ok();
}
[HttpGet, Route("isTimerRunning")]
public IActionResult IsTimerRunning()
{
return Ok(new
{
result = _timedHostedService.IsTimerRunning()
});
}
}
TimedHostedService.cs
public interface ITimedHostedService
{
void StartTimer(int milliseconds);
void StopTimer();
bool IsTimerRunning();
}
public sealed class TimedHostedService : IHostedService, ITimedHostedService
{
private static Timer _timer;
private static readonly object _timerLock = new object();
public void StartTimer(int milliseconds)
{
lock(_timerLock)
{
_timer ??= new Timer(_ =>
{
// TODO: do your timed work here.
}, null, 0, milliseconds);
}
}
public bool IsTimerRunning()
{
lock(_timerLock)
{
return _timer != null;
}
}
public void StopTimer()
{
lock(_timerLock)
{
_timer?.Change(Timeout.Infinite, Timeout.Infinite);
_timer?.Dispose();
_timer = null;
}
}
public Task StartAsync(CancellationToken cancellationToken)
{
return Task.CompletedTask;
}
public Task StopAsync(CancellationToken cancellationToken)
{
StopTimer();
return Task.CompletedTask;
}
}
Then, inject it as so:
services.AddHostedService<TimedHostedService>();
services.AddTransient<ITimedHostedService, TimedHostedService>();
I haven't tested this, but it should work as-is.
I am trying to see Loading progress as follows, but it does not show up.
View.cs
ViewModel.SelectedCommand.Execute(null);
ViewModel.cs
public ICommand SelectedCommand
{
get
{
return new MvxAsyncCommand(async () =>
{
// the following does not show loading
using (UserDialogs.Instance.Loading("Loading..."))
{
var task = await _classroomService.GetClassRoomAsync(SelectedClassroom.Id);
ObservableCollection<ClassroomViewModel> class = new ObservableCollection<ClassroomViewModel>(task.ConvertAll(x => new ClassViewModel(x)));
}
});
}
}
Another example
public ICommand ReloadCommand
{
get
{
return new MvxAsyncCommand(async () =>
{
await RefreshList();
});
}
}
// the following also does not show loading
private async Task RefreshList()
{
using (UserDialogs.Instance.Loading("Loading..."))
{
var task = await _classService.GetClasses();
}
}
If you are using Acr.MvvmCross.Plugins.UserDialogs see that it's depreated and you should use directly Acr.UserDialogs.
Check if you have correctly initialized it as follows:
You have to register it in App.cs of your PCL project:
Mvx.RegisterSingleton<IUserDialogs>(() => UserDialogs.Instance);
And init from the android platform project in your main activity:
UserDialogs.Init(() => Mvx.Resolve<IMvxAndroidCurrentTopActivity>().Activity)
Another thing to take into account is that you should inject it in your constructor as an IUserDialogs (you can use the static Instance way but it adds more flexibility and it is more testable by injecting it):
private readonly IUserDialogs _dialogs;
public ProgressViewModel(IUserDialogs dialogs)
{
this._dialogs = dialogs;
}
and use it like
private async Task RefreshList()
{
using (this._dialogs.Loading("Loading..."))
{
try
{
var task = await this._classService.GetClasses();
}
catch(Exception exc)
{
// This is done only for debugging to check if here lies the problem
throw exc;
}
}
}
You can check if it is properly working by calling something like
public ICommand MyTestCommand
{
get
{
return new MvxAsyncCommand(async () =>
{
// the following should should Loading for 3 seconds
using (this._dialogs.Loading("Loading..."))
{
await Task.Delay(TimeSpan.FromSeconds(3));
}
});
}
}
HIH
I dont like this approuch but it works
Device.BeginInvokeOnMainThread(async () =>
{
try
{
using (UserDialogs.Instance.Loading(("Loading...")))
{
await Task.Delay(300);
await _syncController.SyncData();
//Your Service code
}
}
catch (Exception ex)
{
var val = ex.Message;
UserDialogs.Instance.Alert("Test", val.ToString(), "Ok");
}
});
I'm using FormFlow. When a bot finishes with all the questions and calls processOrder, I want to continue with the dialog, but I don't know where I should call another method:
OnCompletionAsyncDelegate<Form> processOrder = async (context, state) =>
{
await context.PostAsync("You done");
// context.Call(OnFormComplete);
};
When I try to call like this, I get this message:
Error CS7036 There is no argument given that corresponds to the required formal parameter 'resume' of 'IDialogStack.Call(IDialog, ResumeAfter)' Project1 C:\Projects\Good Version\v-17.2.2017\demo-Project1\Project1\Dialogs\Form.cs 34 Compiler IntelliSense Active Compiler
I call the form flow in this mode in my rootdialog.cs:
var myform = new FormDialog<Form>(new Form(), Form.BuildForm, FormOptions.PromptInStart, null);
context.Call(myform, ResumeAfterOptionDialog);
Formbuilder is:
return new FormBuilder<Form>()
.Field(nameof(Time))
.Field(nameof(Number1))
.Field(nameof(Number2))
.AddRemainingFields()
.Confirm("Would you like to process")
.OnCompletion(processOrder)
.Build();
I want to continue the dialog because the bot stopped. How can I call another method and where should I call?
You would to something like this in you formFlow class:
[Serializable]
public class CustomFormDialog
{
public DateTime Time { get; set; }
public int Number1 { get; set; }
public int Number2 { get; set; }
public static IForm<CustomFormDialog> Build()
{
OnCompletionAsyncDelegate<CustomFormDialog> processOrder = async (context, state) =>
{
await context.Forward(new OtherFormDialog(state), onOtherFormProcessed, state, CancellationToken.None);
};
return new FormBuilder<CustomFormDialog>()
.Field(nameof(Time))
.Field(nameof(Number1))
.Field(nameof(Number2))
.AddRemainingFields()
.Confirm("Would you like to process?")
.OnCompletion(processOrder)
.Build();
}
private static async Task onOtherFormProcessed(IDialogContext context, IAwaitable<CustomFormDialog> result)
{
var formValue = await result;
await context.PostAsync($"You are again in the form: Time: {formValue.Time}, Number1: {formValue.Number1}, Number2: {formValue.Number2}");
}
}
I defined a dummy dialog that receives the response of the formFlow dialog, and do some stuff and call the done for that dialog and came back to the FormFlow class:
public class OtherFormDialog : IDialog<CustomFormDialog>
{
private readonly CustomFormDialog formData;
public OtherFormDialog(CustomFormDialog prevState)
{
this.formData = prevState;
}
public async Task StartAsync(IDialogContext context)
{
//Here, we can do anything
await context.PostAsync("I'll check your data. Please wait!");
await context.PostAsync("Just joking! No validation at all.");
context.Done(this.formData);
}
}
I have a full engine that relies on abstractions based on user interactions. This works great with WPF/Xamarin app, cause I can implements this abstractions with window/form.
I have a little problem for porting this engine into ASP MVC.
A simple example can be show as this.
Abstraction interface (simplified)
public interface IQuestionBox
{
Task<bool> ShowYesNoQuestionBox(string message);
}
For WPF, it's really simple, I implement this interface as return the result of a window by calling ShowDialog().
In a simple business class, I can have this kind of calls (simplified) :
public async Task<string> GetValue(IQuestionBox qbox)
{
if(await qbox.ShowYesNoQuestionBox("Question ?"))
{
return "Ok";
}
return "NOk";
}
I really don't see how can I implement this kind of behavior in ASP, due to stateless of HTTP, knowing that this kind of call can be as various as domain/business need. The way I think it should be done is by returning a PartialView to inject into popup, but I don't see how to do this without breaking all the process ...
Anyone has ever done this ?
as I've said, I strongly doesn't recommend this pratice, but its possible, bellow the code that allows to do it, let's go:
To become it's possible I abused the use from TaskCompletionSource, this class allow us to set manually result in a task.
First we need to create a structure to encapsulate the process:
public class Process
{
// this dictionary store the current process running status, you will use it to define the future answer from the user interaction
private static Dictionary<string, Answare> StatusReport = new Dictionary<string, Answare>();
// this property is the secret to allow us wait for the ShowYesNoQuestion call, because til this happen the server doesn't send a response for the client.
TaskCompletionSource<bool> AwaitableResult { get; } = new TaskCompletionSource<bool>(true);
// here we have the question to interact with the user
IQuestionBox QuestionBox { get; set; }
// this method, receive your bussiness logical the receive your question as a parameter
public IQuestionBox Run(Action<IQuestionBox> action)
{
QuestionBox = new QuestionBox(this);
// here we create a task to execute your bussiness logical processment
Task.Factory.StartNew(() =>
{
action(QuestionBox);
});
// and as I said we wait the result from the processment
Task.WaitAll(AwaitableResult.Task);
// and return the question box to show the messages for the users
return QuestionBox;
}
// this method is responsable to register a question to receive future answers, as you can see, we are using our static dictionary to register them
public void RegisterForAnsware(string id)
{
if (StatusReport.ContainsKey(id))
return;
StatusReport.Add(id, new Answare()
{
});
}
// this method will deliver an answer for this correct context based on the id
public Answare GetAnsware(string id)
{
if (!StatusReport.ContainsKey(id))
return Answare.Empty;
return StatusReport[id];
}
// this method Releases the processment
public void Release()
{
AwaitableResult.SetResult(true);
}
// this method end the process delivering the response for the user
public void End(object userResponse)
{
if (!StatusReport.ContainsKey(QuestionBox.Id))
return;
StatusReport[QuestionBox.Id].UserResponse(userResponse);
}
// this method define the answer based on the user interaction, that allows the process continuing from where it left off
public static Task<object> DefineAnsware(string id, bool result)
{
if (!StatusReport.ContainsKey(id))
return Task.FromResult((object)"Success on the operation");
// here I create a taskcompletaionsource to allow get the result of the process, and send for the user, without it would be impossible to do it
TaskCompletionSource<object> completedTask = new TaskCompletionSource<object>();
StatusReport[id] = new Answare(completedTask)
{
HasAnswared = true,
Value = result
};
return completedTask.Task;
}
}
After that the question implementation
public interface IQuestionBox
{
string Id { get; }
Task<bool> ShowYesNoQuestionBox(string question);
HtmlString ShowMessage();
}
class QuestionBox : IQuestionBox
{
Process CurrentProcess { get; set; }
public string Id { get; } = Guid.NewGuid().ToString();
private string Question { get; set; }
public QuestionBox(Process currentProcess)
{
CurrentProcess = currentProcess;
CurrentProcess.RegisterForAnswer(this.Id);
}
public Task<bool> ShowYesNoQuestionBox(string question)
{
Question = question;
CurrentProcess.Release();
return AwaitForAnswer();
}
public HtmlString ShowMessage()
{
HtmlString htm = new HtmlString(
$"<script>showMessage('{Question}', '{Id}');</script>"
);
return htm;
}
private Task<bool> AwaitForAnswer()
{
TaskCompletionSource<bool> awaitableResult = new TaskCompletionSource<bool>(true);
Task.Factory.StartNew(() =>
{
while (true)
{
Thread.Sleep(2000);
var answare = CurrentProcess.GetAnswer(this.Id);
if (!answare.HasAnswered)
continue;
awaitableResult.SetResult(answare.Value);
break;
}
});
return awaitableResult.Task;
}
}
The differences for yours implementaion are:
1 - I create an Identifier to know for who I have to send the aswer, or just to stop the process.
2 - I receive a Process as parameter, because this allows us to call the method
CurrentProcess.Release(); in ShowYesNoQuestion, here in specific, releases the process to send the response responsable to interact with the user.
3 - I create the method AwaitForAnswer, here one more time we use from the TaskCompletionSource class. As you can see in this method we have a loop, this loop is responsable to wait for the user interaction, and til receive a response it doesn't release the process.
4 - I create the method ShowMessage that create a simple html script alert to simulate the user interaction.
Then a simple process class as you should be in your bussiness logical:
public class SaleService
{
public async Task<string> GetValue(IQuestionBox qbox)
{
if (await qbox.ShowYesNoQuestionBox("Do you think Edney is the big guy ?"))
{
return "I knew, Edney is the big guy";
}
return "No I disagree";
}
}
And then the class to represent the user answer
public class Answer
{
// just a sugar to represent empty responses
public static Answer Empty { get; } = new Answer { Value = true, HasAnswered = true };
public Answer()
{
}
// one more time abusing from TaskCompletionSource<object>, because with this guy we are abble to send the result from the process to the user
public Answer(TaskCompletionSource<object> completedTask)
{
CompletedTask = completedTask;
}
private TaskCompletionSource<object> CompletedTask { get; set; }
public bool Value { get; set; }
public bool HasAnswered { get; set; }
// this method as you can see, will set the result and release the task for the user
public void UserResponse(object response)
{
CompletedTask.SetResult(response);
}
}
Now we use all the entire structure create for this:
[HttpPost]
public IActionResult Index(string parametro)
{
// create your process an run it, passing what you want to do
Process process = new Process();
var question = process.Run(async (questionBox) =>
{
// we start the service
SaleService service = new SaleService();
// wait for the result
var result = await service.GetValue(questionBox);
// and close the process with the result from the process
process.End(result);
});
return View(question);
}
// here we have the method that deliver us the user response interaction
[HttpPost]
public async Task<JsonResult> Answer(bool result, string id)
{
// we define the result for an Id on the process
var response = await Process.DefineAnswer(id, result);
// get the response from process.End used bellow
// and return to the user
return Json(response);
}
and in your view
<!-- Use the question as the model page -->
#model InjetandoInteracaoComUsuario.Controllers.IQuestionBox
<form asp-controller="Home" asp-action="Index">
<!-- create a simple form with a simple button to submit the home -->
<input type="submit" name="btnDoSomething" value="All about Edney" />
</form>
<!-- in the scripts section we create the function that we call on the method ShowMessage, remember?-->
<!-- this method request the action answer passing the questionbox id, and the result from a simple confirm -->
<!-- And to finalize, it just show an alert with the process result -->
#section scripts{
<script>
function showMessage(message, id) {
var confirm = window.confirm(message);
$.post("/Home/Answer", { result: confirm, id: id }, function (e) {
alert(e);
})
}
</script>
#Model?.ShowMessage()
}
As I've said, I realy disagree with this pratices, the correct should to write a new dll, to support the web enviroment, but I hope it help you.
I put the project on github to you can download an understand all the solution
I realy hope it can help you
You can create a web socket connection from client side to server side. And work with front-end content with web socket request. It could be implemented as following:
Client side:
$app = {
uiEventsSocket : null,
initUIEventsConnection : function(url) {
//create a web socket connection
if (typeof (WebSocket) !== 'undefined') {
this.uiEventsSocket = new WebSocket(url);
} else if (typeof (MozWebSocket) !== 'undefined') {
this.uiEventsSocket = new MozWebSocket(url);
} else {
console.error('WebSockets unavailable.');
}
//notify if there is an web socket error
this.uiEventsSocket.onerror = function () {
console.error('WebSocket raised error.');
}
this.uiEventsSocket.onopen = function () {
console.log("Connection to " + url + " established");
}
//handling message from server side
this.uiEventsSocket.onmessage = function (msg) {
this._handleMessage(msg.data);
};
},
_handleMessage : function(data){
//the message should be in json format
//the next line fails if it is not
var command = JSON.parse(data);
//here is handling the request to show prompt
if (command.CommandType == 'yesNo') {
var message = command.Message;
var result = confirm(message);
//not sure that bool value will be successfully converted
this.uiEventsSocket.send(result ? "true" : "false");
}
}
}
And init it from ready or load event:
window.onload = function() { $app.initUIEventsConnection(yourUrl); }
Note that you url should begin with ws:// instead of http:// and wss:// instead of https:// (Web Sockets and Web Sockets Secure).
Server side.
Here is a good article for how to setup web sockets at asp.net core application or you could find another one. Note that you should group web socket connections from single user and if you want to send a message to the concrete user, you should send message for every connection from this user.
Every web socket you should accept with AcceptWebSocketAsync() method call and then add instance of this web socket to singleton, which contains a set of web sockets connection groupped by user.
The following class will be used to operate commands:
public class UICommand
{
public string CommandType { get; set; }
public string Message { get; set; }
public Type ReturnType { get; set; }
}
And a full code of singleton for handling sockets
public class WebSocketsSingleton
{
private static WebSocketsSingleton _instance = null;
//here stored web sockets groupped by user
//you could use user Id or another marker to exactly determine the user
private Dictionary<string, List<WebSocket>> _connectedSockets;
//for a thread-safety usage
private static readonly ReaderWriterLockSlim Locker = new ReaderWriterLockSlim();
public static WebSocketsSingleton Instance {
get {
if (this._instance == null)
{
this._instance = new WebSocketsSingleton();
}
return this._instance;
}
}
private WebSocketsSingleton()
{
this._connectedSockets = new Dictionary<string, List<WebSocket>>();
}
/// <summary>
/// Adds a socket into the required collection
/// </summary>
public void AddSocket(string userName, WebSocket ws)
{
if (!this._connectedSockets.ContainsKey(userName))
{
Locker.EnterWriteLock();
try
{
this._connectedSockets.Add(userName, new List<WebSocket>());
}
finally
{
Locker.ExitWriteLock();
}
}
Locker.EnterWriteLock();
try
{
this._connectedSockets[userName].Add(ws);
}
finally
{
Locker.ExitWriteLock();
}
}
/// <summary>
/// Sends a UI command to required user
/// </summary>
public async Task<string> SendAsync(string userName, UICommand command)
{
if (this._connectedSockets.ContainsKey(userName))
{
var sendData = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(command));
foreach(var item in this._connectedSockets[userName])
{
try
{
await item.SendAsync(new ArraySegment<byte>(sendData), WebSocketMessageType.Text, true, CancellationToken.None);
}
catch (ObjectDisposedException)
{
//socket removed from front end side
}
}
var buffer = new ArraySegment<byte>(new byte[1024]);
var token = CancellationToken.None;
foreach(var item in this._connectedSockets[userName])
{
await Task.Run(async () => {
var tempResult = await item.ReceiveAsync(buffer, token);
//result received
token = new CancellationToken(true);
});
}
var resultStr = Encoding.Utf8.GetString(buffer.Array);
if (command.ReturnType == typeof(bool))
{
return resultStr.ToLower() == "true";
}
//other methods to convert result into required type
return resultStr;
}
return null;
}
}
Explanation:
on establishing connection from web socket it will be added with
AddSocket method
on sending request to show a message, the required command will be passed into SendAsync method
the command will be serialized to JSON (using Json.Net, however you could serialize in your way) and send to all sockets, related to the required user
after the command sent, application will wait for respond from front end side
the result will be converted to required type and sent back to your IQuestionBox
In the web socket handling your should add some kind of the following code:
app.Use(async (http, next) =>
{
if (http.WebSockets.IsWebSocketRequest)
{
var webSocket = await http.WebSockets.AcceptWebSocketAsync();
var userName = HttpContext.Current.User.Identity.Name;
WebSocketsSingleton.Instance.AddSocket(userName, webSocket);
while(webSocket.State == WebSocketState.Open)
{
//waiting till it is not closed
}
//removing this web socket from the collection
}
});
And your method implementation of ShowYesNoQuestionBox should be kind of following:
public async Task<bool> ShowYesNoQuestionBox(string userName, string text)
{
var command = new UICommand
{
CommandType = "yesNo",
Message = text,
ReturnType = typeof(bool)
};
return await WebSocketsSingleton.Instance.SendAsync(string userName, command);
}
Note that there should be added userName to prevent sending the same message to all of the connected users.
WebSocket should create the persistent connection between server and client sides, so you could simply send commands in two ways.
I am kindly new to Asp.Net Core, so the final implementation could be a bit different from this.
It's actually much the same, except your UI is sort of disconnected and proxied with the HTTP protocol for the most part.
you essentially need to build the same code as your WPF code but then in the browser construct ajax calls in to the controller actions to apply your logic.
To clarify ...
so lets say you are building up a process over a series of questions that based on the users answer you put different steps in to the process.
You can either ...
build the process in the database
build it in session on the server
build it on the client as a js object
then do a post for execution ofthe constructed process.
think of the "statelessness" as a series of short interactions, but the state you keep between them can be done either on the client, in a db or in the users logged in session on the web server.
In your controller you can add an ActionResult that will give you the html response to your jquery modal popup request. Here is an example
public class MController : Controller {
public ActionResult doWork(requirement IQuestionBox)
{
// model is already modelBound/IOC resolved
return PartialView("_doWork", requirement );
}
}
//scripts
$(function(){
$.ajax({
url:"/m/doWork",
type:"get",
success:function(data){
$modal.html(data); // bind to modal
}
});
});
Apologies for not fully understanding the question.
hope this helps!