In my Asp.Net project I wanna use Property Auto-wiring, e.g. for my ILogger. Basically I placed it as Property into class where I need to use it. Like below.
public class UserControlBase : UserControl
{
public ILogger CLogger { get; set; }
....
}
public partial class IPTracking : UserControlBase
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
string ip = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
//it works
ILogger logger = ObjectFactory.GetInstance<ILogger>();
logger.LogInfo(string.Format("Client IP: {0}", ip));
//it does not work
CLogger.LogInfo(string.Format("Client IP: {0}", ip));
}
}
}
However when calling in inherited control, logger is null. I checked the container and it'a definitely set as above implementation shows. Below is setting which is called from Global.asax.
public static void SetupForIoC()
{
Debug.WriteLine("SetupForIoC");
ObjectFactory.Initialize(x =>
{
x.FillAllPropertiesOfType<ILogger>().Use<EntLibLogger>();
});
Debug.WriteLine(ObjectFactory.WhatDoIHave());
}
Thanks for any advice, tip? X.
Update:
- I didnt mentioned before, but its Asp.Net webforms 3.5.
- I can't see what I am missing. I guess it could be because the injection gets involved later in process and didnt get set in requested class.
Link to desc. of usage: http://structuremap.github.com/structuremap/ConstructorAndSetterInjection.htm#section7
Give something like this a shot.
FillAllPropertiesOfType<ILogger>().AlwaysUnique().Use(s => s.ParentType == null ? new Log4NetLogger(s.BuildStack.Current.ConcreteType) : new Log4NetLogger((s.ParentType)));
Check out another StackOverflow answer I have which discusses using StructureMap to auto wire loggers.
Where do you actually set the CLogger property on the user control? Also, if you wanted to use one logger within the page, you could have the User cotnrol do:
public ILogger CLogger
{
get
{
if (this.Page is PageBase)
return ((PageBase)this.Page).Logger;
else
return null;
}
}
Related
Dont understand why its not working.. im using the property to set the Activelogin to true then getting the value in another page to certify that the user is has access.
namespace Ibrax_1
{
public partial class loginPage : System.Web.UI.Page
{
public bool activelogin;
public bool Activelogin
{
get
{
return activelogin;
}
set
{
activelogin = value;
}
}
.
.
.
Activelogin = true; // here in a method im setting the value to true.
and im getting value here:
namespace Ibrax_1
{
public partial class Program : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
CheckAvailablePrograms();
}
private void CheckAvailablePrograms()
{
loginPage lp = new loginPage();
if (lp.Activelogin) //here im getting the value but its false
{
am i doing anything wrong?
You're creating a new instance:
loginPage lp = new loginPage();
That new instance will have every property set to its default value. For boolean, that's false.
If you're setting it to true somewhere else, then it won't matter since you're not looking at that instance.
It's like drawing on a piece of paper and then taking another paper and wondering why there's no drawing on it. You can't expect there to be a drawing unless you're looking at the same piece of paper.
So you need to save the instance of object somewhere so you can use it again in the CheckAvailablePrograms method. As Alex Kudryashev mentioned, you could save it as a Session variable, although it's not the only way. You can read more about the Session object here if you wish: https://msdn.microsoft.com/en-us/library/ms178581.aspx
I am actually working in an ASP.Net MVC 4 web application where we are using NInject for dependency injection. We are also using UnitOfWork and Repositories based on Entity framework.
We would like to use Quartz.net in our application to start some custom job periodically. I would like that NInject bind automatically the services that we need in our job.
It could be something like this:
public class DispatchingJob : IJob
{
private readonly IDispatchingManagementService _dispatchingManagementService;
public DispatchingJob(IDispatchingManagementService dispatchingManagementService )
{
_dispatchingManagementService = dispatchingManagementService ;
}
public void Execute(IJobExecutionContext context)
{
LogManager.Instance.Info(string.Format("Dispatching job started at: {0}", DateTime.Now));
_dispatchingManagementService.DispatchAtomicChecks();
LogManager.Instance.Info(string.Format("Dispatching job ended at: {0}", DateTime.Now));
}
}
So far, in our NInjectWebCommon binding is configured like this (using request scope):
kernel.Bind<IDispatchingManagementService>().To<DispatchingManagementService>();
Is it possible to inject the correct implementation into our custom job using NInject ? and how to do it ? I have read already few posts on stack overflow, however i need some advises and some example using NInject.
Use a JobFactory in your Quartz schedule, and resolve your job instance there.
So, in your NInject config set up the job (I'm guessing at the correct NInject syntax here)
// Assuming you only have one IJob
kernel.Bind<IJob>().To<DispatchingJob>();
Then, create a JobFactory: [edit: this is a modified version of #BatteryBackupUnit's answer here]
public class NInjectJobFactory : IJobFactory
{
private readonly IResolutionRoot resolutionRoot;
public NinjectJobFactory(IResolutionRoot resolutionRoot)
{
this.resolutionRoot = resolutionRoot;
}
public IJob NewJob(TriggerFiredBundle bundle, IScheduler scheduler)
{
// If you have multiple jobs, specify the name as
// bundle.JobDetail.JobType.Name, or pass the type, whatever
// NInject wants..
return (IJob)this.resolutionRoot.Get<IJob>();
}
public void ReturnJob(IJob job)
{
this.resolutionRoot.Release(job);
}
}
Then, when you create the scheduler, assign the JobFactory to it:
private IScheduler GetSchedule(IResolutionRoot root)
{
var schedule = new StdSchedulerFactory().GetScheduler();
schedule.JobFactory = new NInjectJobFactory(root);
return schedule;
}
Quartz will then use the JobFactory to create the job, and NInject will resolve the dependencies for you.
Regarding scoping of the IUnitOfWork, as per a comment of the answer i linked, you can do
// default for web requests
Bind<IUnitOfWork>().To<UnitOfWork>()
.InRequestScope();
// fall back to `InCallScope()` when there's no web request.
Bind<IUnitOfWork>().To<UnitOfWork>()
.When(x => HttpContext.Current == null)
.InCallScope();
There's only one caveat that you should be aware of:
With incorrect usage of async in a web request, you may mistakenly be resolving a IUnitOfWork in a worker thread where HttpContext.Current is null. Now without the fallback binding, this would fail with an exception which would show you that you've done something wrong. With the fallback binding however, the issue may present itself in an obscured way. That is, it may work sometimes, but sometimes not. This is because there will be two (or even more) IUnitOfWork instances for the same request.
To remedy this, we can make the binding more specific. For this, we need some parameter to tell us to use another than InRequestScope(). Have a look at:
public class NonRequestScopedParameter : Ninject.Parameters.IParameter
{
public bool Equals(IParameter other)
{
if (other == null)
{
return false;
}
return other is NonRequestScopedParameter;
}
public object GetValue(IContext context, ITarget target)
{
throw new NotSupportedException("this parameter does not provide a value");
}
public string Name
{
get { return typeof(NonRequestScopedParameter).Name; }
}
// this is very important
public bool ShouldInherit
{
get { return true; }
}
}
now adapt the job factory as follows:
public class NInjectJobFactory : IJobFactory
{
private readonly IResolutionRoot resolutionRoot;
public NinjectJobFactory(IResolutionRoot resolutionRoot)
{
this.resolutionRoot = resolutionRoot;
}
public IJob NewJob(TriggerFiredBundle bundle, IScheduler scheduler)
{
return (IJob) this.resolutionRoot.Get(
bundle.JobDetail.JobType,
new NonrequestScopedParameter()); // parameter goes here
}
public void ReturnJob(IJob job)
{
this.resolutionRoot.Release(job);
}
}
and adapt the IUnitOfWork bindings:
Bind<IUnitOfWork>().To<UnitOfWork>()
.InRequestScope();
Bind<IUnitOfWork>().To<UnitOfWork>()
.When(x => x.Parameters.OfType<NonRequestScopedParameter>().Any())
.InCallScope();
This way, if you use async wrong, there'll still be an exception, but IUnitOfWork scoping will still work for quartz tasks.
For any users that could be interested, here is the solution that finally worked for me.
I have made it working doing some adjustment to match my project. Please note that in the method NewJob, I have replaced the call to Kernel.Get by _resolutionRoot.Get.
As you can find here:
public class JobFactory : IJobFactory
{
private readonly IResolutionRoot _resolutionRoot;
public JobFactory(IResolutionRoot resolutionRoot)
{
this._resolutionRoot = resolutionRoot;
}
public IJob NewJob(TriggerFiredBundle bundle, IScheduler scheduler)
{
try
{
return (IJob)_resolutionRoot.Get(
bundle.JobDetail.JobType, new NonRequestScopedParameter()); // parameter goes here
}
catch (Exception ex)
{
LogManager.Instance.Info(string.Format("Exception raised in JobFactory"));
}
}
public void ReturnJob(IJob job)
{
}
}
And here is the call schedule my job:
public static void RegisterScheduler(IKernel kernel)
{
try
{
var scheduler = new StdSchedulerFactory().GetScheduler();
scheduler.JobFactory = new JobFactory(kernel);
....
}
}
Thank you very much for your help
Thanks so much for your response. I have implemented something like that and the binding is working :):
public IJob NewJob(TriggerFiredBundle bundle, IScheduler scheduler)
{
var resolver = DependencyResolver.Current;
var myJob = (IJob)resolver.GetService(typeof(IJob));
return myJob;
}
As I told before I am using in my project a service and unit of work (based on EF) that are both injected with NInject.
public class DispatchingManagementService : IDispatchingManagementService
{
private readonly IUnitOfWork _unitOfWork;
public DispatchingManagementService(IUnitOfWork unitOfWork)
{
_unitOfWork = unitOfWork;
}
}
Please find here how I am binding the implementations:
kernel.Bind<IUnitOfWork>().To<EfUnitOfWork>()
kernel.Bind<IDispatchingManagementService>().To<DispatchingManagementService>();
kernel.Bind<IJob>().To<DispatchingJob>();
To resume, the binding of IUnitOfWork is done for:
- Eevery time a new request is coming to my application ASP.Net MVC: Request scope
- Every time I am running the job: InCallScope
What are the best practices according to the behavior of EF ? I have find information to use CallInScope. Is it possible to tell NInject to get a scope ByRequest everytime a new request is coming to the application, and a InCallScope everytime my job is running ? How to do that ?
Thank you very much for your help
Newbie here, I need help with a website I'm creating.
I have a class that does some analysis on some text that is input by the user, the class then finds an appropriate answer and sends it back to the textbox. (in theory)
Problem is I don't know how I can control and access the textbox on the default.aspx page from a class, all I get is "object reference is required non static field".
I made the textbox public in the designer file yet still no joy. :(
I've also read this: How can I access the controls on my ASP.NET page from a class within the solution? , which I think is along the lines of what I'm trying to achieve but I need clarification/step by step on how to achieve this.
Hope someone can point me in the right direction.
Many thanks,
Kal
This is the code I have added to the designer.cs file:
public global::System.Web.UI.WebControls.TextBox TextBox3;
public string MyTextBoxText
{
get
{
return TextBox3.Text;
}
set
{
TextBox3.Text = value;
}
}
This is the class method i have created:
public static cleanseMe(string input)
{
string utterance = input;
string cleansedUtt = Regex.Replace(utterance, #"[!]|[.]|[?]|[,]|[']", "");
WebApplication1._Default.TextBox3.text = cleansedUtt;
}
I could just return the cleansedUtt string i know, but is it possible for me to just append this string to the said textbox from this method, within this class?
I also tried it this way, i wrote a class that takes in the name of the textbox and string to append to that textbox. it works BUT only on the default.aspx page and does not recognise the textbox names within the difference classes. The code is as follows:
public class formControl
{
public static void ModifyText(TextBox textBox, string appendthis)
{
textBox.Text += appendthis + "\r\n";
}
I would suggest you that do not access the Page Controls like TextBox in your class. It will be more useful and a good practice that whatever functionality your class does, convert them into function which accept the parameters and returns some value and then on the basis of that value you can set the controls value.
So now you have reusable function that you can use from any of the page you want. You do not need to write it for every textbox.
Here I am giving you a simple example
public class Test
{
public bool IsValid(string value)
{
// Your logic
return true;
}
}
Now you can use it simple on your page like this
Test objTest = new Test();
bool result=objTest.IsValid(TextBox1.Text);
if(result)
{
TextBox1.Text="Everything is correct";
}
else
{
TextBox1.Text="Something went wrong";
}
If you have your class in the same project (Web Project) the following will work:
public class Test
{
public Test()
{
//
// TODO: Add constructor logic here
//
}
public static void ValidateTextBox(System.Web.UI.WebControls.TextBox txt)
{
//validation logic here
if (txt != null)
txt.Text = "Modified from class";
}
}
You can use this from your webform like this:
protected void Page_Load(object sender, EventArgs e)
{
Test.ValidateTextBox(this.txt);
}
If your class is in a different (class project), you would need to add a reference to System.Web to your project.
In my ASP.NET MVC3 web application I'd like to add a small message displaying the number of users currently browsing the site.
I'm currently using Session_Start and Session_End application events to increment or decrement a static property inside Global.asax.
This works, but it isn't precise at all. Since my session timeout is configured to 20mn there's a huge delay between updates.
Is there a more elegant, precise way of doing this?
I've thought of calling an action via AJAX which simply does Session.Abandon() on the window.onbeforeunload javascript event, but this would be called each time the user changed pages. Is there a way to determine when the user closes his browser or leaves the domain?
Any hints, comments or code examples would be welcome!
Here is the relevant part of current code:
public class MvcApplication : System.Web.HttpApplication
{
public static int UsersConnected { get; set; }
protected void Session_Start(object sender, EventArgs e)
{
Application.Lock();
UsersConnected++;
Application.UnLock();
}
protected void Session_End(object sender, EventArgs e)
{
Application.Lock();
UsersConnected--;
Application.UnLock();
}
...
}
Okay this was a bit tricky but I've come with an 'okay' solution.
First, Ive created a static dictionary in Global.asax which will store the IP address of the clients and their last poll date.
public class MvcApplication : System.Web.HttpApplication
{
public static Dictionary<string, DateTime> ConnectedtUsers { get; set; }
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
RegisterGlobalFilters(GlobalFilters.Filters);
RegisterRoutes(RouteTable.Routes);
ConnectedtUsers = new Dictionary<string, DateTime>();
}
...
}
Then, in my CommonsController, I've created this action which will add new clients, remove clients which haven't been polled in the last 30 seconds and update the poll date of already registered clients :
public class CommonsController : Controller
{
...
public JsonResult UserConnected()
{
string ip = Request.UserHostAddress;
if (MvcApplication.ConnectedtUsers.ContainsKey(ip))
{
MvcApplication.ConnectedtUsers[ip] = DateTime.Now;
}
else
{
MvcApplication.ConnectedtUsers.Add(ip, DateTime.Now);
}
int connected = MvcApplication.ConnectedtUsers.Where(c => c.Value.AddSeconds(30d) > DateTime.Now).Count();
foreach (string key in MvcApplication.ConnectedtUsers.Where(c => c.Value.AddSeconds(30d) < DateTime.Now).Select(c => c.Key))
{
MvcApplication.ConnectedtUsers.Remove(key);
}
return Json(new { count = connected }, JsonRequestBehavior.AllowGet);
}
}
Finally, on my layout page, added this code which will call my action every 30 seconds and output the result in a span :
<span id="connectedUsers"></span>
<script type="text/javascript">
function PollUsers()
{
$(function() {
$.getJSON("/Commons/UserConnected", function(json){ $('#connectedUsers').text(json.count + " user(s) connected")});
});
}
setInterval(PollUsers, 30000);
</script>
May not be that precise, maybe not that elegant either, but it works. Of course, multiple users from the same IP would count for one user. But it's the best solution I've experimented so far.
you can call a webmethod from javascript on unload body event.
http://www.codeproject.com/Tips/89661/Execute-server-side-code-on-close-of-a-browser
Best regards
Being new to RhinoMocks and Unit Testing, I have come accross an issue that I cannot seem to find a resolution to (no matter how much documentation I read).
The issue is this: I have created an Interface that exposes 5 Events (to be used for a view in ASP.NET and the MVP Supervisory Controller pattern..... I know, I should be using MVC, but that's a whole other issue). Anyway, I want to test that when a certain event fires on the view, we'll call it "IsLoaded", that a method inside of my Presenter is called and, using Dependency Injection, a value is returned from the Dependency and set to the view. Here is where the problem starts: when I use Expect.Call(Dependency.GetInfo()).Return(SomeList), the Call never executes (without the mock.ReplayAll() method being invoked). Well, when I invoke the ReplayAll method, I get ExpectationExceptions because of the Subscription by the Presenter object to the other Events exposed by the View Interface.
So, for me to test that IView.IsLoaded has fired, I want to verify that IView.ListOfSomething has been updated to match the list I passed in via the Expect.Call(). However, when I set the expectation, the other Event subscriptions (which occur straight out of the constructor for the Presenter) fail the #0 Expectations of the test. What I get is, view.Save += this.SaveNewList tosses up a RhinoMocks ExpectationViolationException.
My million dollar question is this: Is it necessary I set expectations for ALL of my events (via [Setup]), or is there something that I'm missing/not understanding about how Unit Testing or RhinoMocks works?
Please bear in mind I am extremely new to Unit Testing, and therefore RhinoMocks. If it appears I don't know what I'm talking about, please feel free to point that out.
I'm working on a project where we used MVP and rhino mocks as well. What we did was simply expect all event subscriptions in every test.
private void SetupDefaultExpectations()
{
_mockView.Initializing += null; LastCall.IgnoreArguments();
_mockView.SavingChanges += null; LastCall.IgnoreArguments();
}
Then we built a extension method on IMockedObject (from RhinoMocks) to trigger events in the unit tests and un-wrap exceptions so that they can be expected in the standard NUnit way.
static class IMockedObjectExtension
{
public static void RaiseEvent(this IMockedObject mockView, string eventName, EventArgs args)
{
EventRaiser eventraiser = new EventRaiser(mockView, eventName);
try
{
eventraiser.Raise(mockView, args);
}
catch (TargetInvocationException ex)
{
throw ex.InnerException;
}
}
public static void RaiseEvent(this IMockedObject mockView, string eventName)
{
RaiseEvent(mockView, eventName, EventArgs.Empty);
}
}
This could then be used from the unit test like this
using(_mocks.Record())
{
Expect.Call(dependency.GetInfo()).Return(someList);
}
using(_mocks.Playback())
{
Presenter presenter = new Presenter(_mockView, dependency);
(_mockView as IMockedObject).RaiseEvent("SavingChanges");
}
To eliminate duplication between presenter tests we have refactored this to a BasePresenterTest base class which sets up this basic structure for all presenter tests and exposes helper methods to the sub class.
public abstract class BasePresenterTest<VIEW> where VIEW : IBaseView
{
protected MockRepository _mocks;
protected VIEW View { get; private set; }
protected abstract void SetUp();
protected abstract void TearDown();
protected abstract void SetupDefaultExpectations();
[SetUp]
public virtual void BaseSetUp()
{
_mocks = new MockRepository();
View = _mocks.CreateMock<VIEW>();
SetUp();
}
[TearDown]
public virtual void BaseTearDown()
{
TearDown();
View = null;
_mocks = null;
}
protected virtual void BaseSetupDefaultExpectations()
{
//Setup default expectations that are general for all views
SetupDefaultExpectations();
}
protected virtual IDisposable Record()
{
IDisposable mocksRecordState = _mocks.Record();
BaseSetupDefaultExpectations();
return mocksRecordState;
}
protected virtual IDisposable Playback()
{
return _mocks.Playback();
}
protected void RaiseEventOnView(string eventName)
{
(View as IMockedObject).RaiseEvent(eventName);
}
}
This eliminates alot of code from the tests in our project.
We still use a old version of RhinoMocks but I will try to update this once we move to a later version.