Problem with "Attempt to create a disposable instance without a current scope"

[shinjiDev]

Hi
I'm using the get method of JQuery to return a json to fill a combobox, and also to receive an html and fill it in a div.
The problem is that It works in the first requests, but after that it throws an exception:
"Attempt to create a disposable instance without a current scope"
It looks related to lightinject.

How did it happen to me?And also, how can i fix it?
Thanks for your time

[seesharper]

Is this a MVC application?

Sent from my iPhone

On 26. nov. 2013, at 16:34, Christian Eduardo Palomares Peralta <
notifications@github.com> wrote:

Hi
I'm using the get method of JQuery to return a json to fill a combobox, and
also to receive an html and fill it in a div.
The problem is that It works in the first requests, but after that it
throws an exception:
"Attempt to create a disposable instance without a current scope"
It looks related to lightinject.

How did it happen to me?And also, how can i fix it?
Thanks for your time

—
Reply to this email directly or view it on
GitHubhttps://github.com//issues/49
.

[shinjiDev]

Yes. It's MVC.
I think i know why does it happen. But I don't know how does it take effect in lightinject.
When the "change" event of the combobox is called, everything is ok if i wait until getting the response.
But if I call the "change" event everytime without waiting the response, It throws me that exception.

[seesharper]

Okay, its a little hard for me to say without actually seeing the problem. What happens is that LightInject creates a scope when the web request starts end ends the scope when the web request ends. Would it be possible for you to send me the simplest possible project that causes the problem. You don't have to return real data, but just some mock data to fill the combo box. There must be some async stuff going on here that causes the error.

[seesharper]

Or you could just describe the steps I need to take in order for it to fail, although a sample project would be best. I will investigate further as soon as I have more information :)

[seesharper]

It just occurred to me that the method you call to populate the combobox might be a Web API method?

[shinjiDev]

@seesharper No, It's not a Web API method. My controller looks like this:

    public ActionResult Index()
    {
        return View(new Model{Projects = new List<Project>{ new Project{Title = "Title", IdProject = 1}});
    }
    public ActionResult GetUsersByProject(Proyecto proyecto)
    {
        return Json(UserService.GetUsuariosByProyecto(proyecto).Select(i => new {IdUsuario = i.IdUsuario, Nombre = i.TrabajadorWenco.Nombre}), JsonRequestBehavior.AllowGet);
    }

And my cshtml looks like this:

<div>
<div class="form-group">
    <label class="col-sm-2 control-label" for="Proyecto">Proyecto</label>
    <div id="Proyecto" class="controls col-sm-10">
        <select class="form-control" name="Proyecto">
            <option value="0">-- Seleccione --</option>
            @foreach (var proyecto in Model.Projects)
            {
                <option value="@proyecto.IdProject">@proyecto.Title</option>
            }
        </select>
    </div>
</div>
<div class="form-group">
    <label class="col-sm-2 control-label" for="Usuario">Usuario</label>
    <div id="Usuario" class="controls col-sm-10">
        <select class="form-control" name="Usuario">
            <option value="0">-- Seleccione --</option>
            @foreach (var usuario in Model.Users)
            {
                <option value="@usuario.IdUsuario">@usuario.TrabajadorWenco.Nombre</option>
            }
        </select>
    </div>
</div>
</div>

My jquery just calls with $.get the second method of the controllers when the first combobox changes. If I made it slow it works, but if I do it fast it throws me that exception.

[seesharper]

Thanks, I will try to reproduce the error. Just one thing. Does this also
happen with the IIS express development server or just with the full IIS ?

Sent from my iPhone

On 27. nov. 2013, at 13:49, Christian Eduardo Palomares Peralta <
notifications@github.com> wrote:

@seesharper https://github.com/seesharper No, It's not a Web API method.
My controller looks like this:

public ActionResult Index()
{
    return View(new Model{Projects = new List<Project>{ new

Project{Title = "Title", IdProject = 1}});
}
public ActionResult GetUsersByProject(Proyecto proyecto)
{
return Json(UserService.GetUsuariosByProyecto(proyecto).Select(i
=> new {IdUsuario = i.IdUsuario, Nombre = i.TrabajadorWenco.Nombre}),
JsonRequestBehavior.AllowGet);
}

And my cshtml looks like this:

Proyecto

-- Seleccione -- @foreach (var proyecto in Model.Projects) { @proyecto.Title }

Usuario

-- Seleccione -- @foreach (var usuario in Model.Users) { @usuario.TrabajadorWenco.Nombre }

My jquery just calls with $.get the second method of the controllers when
the first combobox changes. If I made it slow it works, but if I do it fast
it throws me that exception.

—
Reply to this email directly or view it on
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.

[shinjiDev]

I'v just tried in IIS express. I'll get one full IIS to test it.

[seesharper]

I don't think that will make any difference. Hmm, let's see. This is visual
studio 2012, .net 4 with MVC 4?

Sent from my iPhone

On 27. nov. 2013, at 14:31, Christian Eduardo Palomares Peralta <
notifications@github.com> wrote:

I'v just tried in IIS express. I'll get one full IIS to test it.

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Reply to this email directly or view it on
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.

[shinjiDev]

No
This is VS 2013 RC .Net 4.5 MVC 4 (I'm not sure about the last thing)

[seesharper]

Okay, from what I can see after some "googling", there seem to some issues
related to VS 2013 RC and the IIS Express that gets installed with it.

I only have VS 2013 RTM (the final release) on my machine and I am unable
to reproduce this behavior.

LightInject stores the "current scope" in the HttpContext.Items collection
and unless some other code clears out this collection in the middle of a
request, this should work as expected.

Can you show me the full cshtml file and not just the combobox part?

On Wed, Nov 27, 2013 at 2:45 PM, Christian Eduardo Palomares Peralta <
notifications@github.com> wrote:

No
This is VS 2013 RC .Net 4.5 MVC 4 (I'm not sure about the last thing)

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Reply to this email directly or view it on GitHubhttps://github.com//issues/49#issuecomment-29384993
.

[seesharper]

Another possible approach is to load the project in VS 2012 and see if the problem remains.

[seesharper]

Do you still experience the same problem?

[shinjiDev]

Sorry @seesharper i was sick and i wasn't able to test more about this :(
I don't have a VS2012 to test if the problem remains but I'll get one the next week.
BTW, My app is in production now and I'm getting the next error:
InvalidOperationException
Mensaje de la excepción: Attempt to create a disposable instance without a current scope.
en LightInject.PerRequestLifeTime.TrackInstance(Scope scope, IDisposable disposable) en c:\Users\bri\Documents\GitHub\LightInject\NuGet\Build\Net\LightInject\LightInject.cs:línea 3881
en LightInject.PerRequestLifeTime.GetInstance(Func`1 createInstance, Scope scope) en c:\Users\bri\Documents\GitHub\LightInject\NuGet\Build\Net\LightInject\LightInject.cs:línea 3871
en DynamicMethod(Object[] )
en LightInject.ServiceContainer.TryGetInstance(Type serviceType) en c:\Users\bri\Documents\GitHub\LightInject\NuGet\Build\Net\LightInject\LightInject.cs:línea 1922
en LightInject.Mvc.LightInjectMvcDependencyResolver.GetService(Type serviceType) en c:\Users\bri\Documents\GitHub\LightInject\NuGet\Build\Net\LightInject.Mvc\LightInject.Mvc.cs:línea 134
en System.Web.Mvc.DefaultControllerFactory.DefaultControllerActivator.Create(RequestContext requestContext, Type controllerType)

This is happening after the user is logged in my app. The main page is not loading data. I don't know why is it happening.

[seesharper]

Do you have a reference to LightInject.Web in your web application?. This
is sort of important as LightInject.Web is responsible for starting and
ending scopes.

On Tue, Dec 10, 2013 at 4:46 PM, Christian Eduardo Palomares Peralta <
notifications@github.com> wrote:

Sorry @seesharper https://github.com/seesharper i was sick and i wasn't
able to test more about this :(
I don't have a VS2012 to test if the problem remains but I'll get one the
next week.
BTW, My app is in production now and I'm getting the next error:
InvalidOperationException
Mensaje de la excepción: Attempt to create a disposable instance without a
current scope.
en LightInject.PerRequestLifeTime.TrackInstance(Scope scope, IDisposable
disposable) en
c:\Users\bri\Documents\GitHub\LightInject\NuGet\Build\Net\LightInject\LightInject.cs:línea
3881
en LightInject.PerRequestLifeTime.GetInstance(Func`1 createInstance, Scope
scope) en
c:\Users\bri\Documents\GitHub\LightInject\NuGet\Build\Net\LightInject\LightInject.cs:línea
3871
en DynamicMethod(Object[] )
en LightInject.ServiceContainer.TryGetInstance(Type serviceType) en
c:\Users\bri\Documents\GitHub\LightInject\NuGet\Build\Net\LightInject\LightInject.cs:línea
1922
en LightInject.Mvc.LightInjectMvcDependencyResolver.GetService(Type
serviceType) en
c:\Users\bri\Documents\GitHub\LightInject\NuGet\Build\Net\LightInject.Mvc\LightInject.Mvc.cs:línea
134
en
System.Web.Mvc.DefaultControllerFactory.DefaultControllerActivator.Create(RequestContext
requestContext, Type controllerType)

This is happening after the user is logged in my app. The main page is not
loading data. I don't know why is it happening.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/49#issuecomment-30238395
.