C# - Elmah: Exceptions Without HttpContext?

Jan 21, 2010

I spawn a thread on Application_Start and would like to log exceptions. There is not Context/HttpContext/HttpContext.Current, so how might i get it to log?ATM it does not catch any exception in my threads and if i write ErrorSignal.FromCurrentContext().Raise(ex); i get an error about context cannot be null.Maybe i can create a dummy HttpContext but somehow i dont think that will work well.-edit- i tried ErrorSignal.Get(new HttpApplication()).Raise(ex); and it doesnt seem to pick up that exception.

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Aug 3, 2010

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Feb 1, 2010

Is there a way to globally handle exceptions in regular ASP.NET Web Service (asmx) using ELMAH like we do it in ASP.NET web site ?

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Jan 26, 2010

I'm building the standard 3-tier ASP.NET web application but I'm struggling as to where to do certain things - specifically handling exceptions.

I've tried to have a look around on the web for some examples but can't find any which go as far as a whole project showing how everything links together.

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C# - Workaround For HttpContext.HideRequestResponse Being Internal? Detect If HttpContext.Request Is Really Available?

Apr 9, 2010

We're migrating an application to use IIS7 integrated mode. In library code that is designed to work either within the context of an HTTP request or not, we commonly have code like this:

if (HttpContext.Current != null &&
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But in IIS7 integrated mode the check for HttpContext.Current.Request throws an exception whenever this code is called from Application_Start.

protected void Application_Start(object sender, EventArgs e)
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Results in:

System.Web.HttpException: Request is not available in this context

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http://mvolo.com/blogs/serverside/archive/2007/11/10/Integrated-mode-Request-is-not-available-in-this-context-in-Application_5F00_Start.aspx

I'm using the work-around mentioned there which is to use Application_BeginRequest and an initialized field to only initialize once as part of BeginRequest, but that has to be done in every calling application whereas I'd prefer to make the library code more robust and handle this situation regardless of where it's called from.

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Relationship Between HttpContext.Request.Cookies And HttpContext.Response.Cookies

Nov 23, 2010

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Nov 23, 2010

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here mSessionItems is my session and target is my instance of a controller,and indeed, when i'm in a controller reading this.ControllerContext.HttpContext.Session, i have a session, great!but.... i also read the session outside the controller, and there i use HttpContext.Current.Session, and that is null (or actualy, the HttpContext.Current is null).

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Jan 24, 2011

I'm following this blog post about setting up ELMAH with MVC: [URL] I've only done part 1. Everything works correctly if I simply go to the Home controller, and then cause an error. I can view /elmah.axd as well, and my errors are logging in the database correctly.

However, I've added an area to my application named Admin. If I navigate to /Admin, I receive the following error:

System.MissingMethodException: No parameterless constructor defined for this object.
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I'm assuming this has something to do with my Area.

EDIT for jfar:

For instance, I have an Employees controller in my Admin area:

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{
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//...
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How To Setup Elmah

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[code]...

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<urlrewritingnet
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Is It Possible To Configure ELMAH Entirely In Code

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Mar 5, 2010

I'm using ELMAH to handle the exceptions in my ASP.Net MVC project. I would like to use it to log errors like database connection timeout, query connection timeout and others. Is this possible with ELMAH?

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Jun 10, 2010

I've just starting looking at a site in place at work. They're using Elmah to log errors.It seems to be logging fine, but in the web interface, when I tell Elmah to show me 100 errors per page, it only shows the most recent 15.Then when I click on "Download Log" I only get shown 15 errors in the CSV.Anyone know how I can configure it to keep all the errors?Or can someone point me to some docs on how to do this?

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Jan 31, 2010

How can I determine programmatically whether or not ELMAH is enabled?

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Apr 14, 2010

So, have an ASP 3.5 site built using ELMAH.

It runs fine under IIS 5.1, I can see all the error pages, etc.

Set up the site on another machine running IIS 7.5.

Now when I go to my /admin/elmah.axd page, i see a 404 error from IIS 7.5.

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Feb 21, 2010

I was going to use ELMAH for our ultimate automatic error logging but recently realized that ASP.NET Health Monitoring does a same work (perhaps). Now I want to know (please) if they are alternatives of each other just like log4net and entlib?

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I'm using Elmah with ASP.NET and wondering how I would add custom data, such as a session variable, to an unhandled exception email.I've tried several handlers in the Global.asax file but can't seem to find the right one.

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Feb 23, 2010

This question builds on the following question:How to get Elmah working with ASP.NET and IIS 5.1 URL RoutingThe solution suggested there worked, as long as elmah.axd is off of the root of the site. What if you want to secure the site as blogged here:Securely Implement ELMAH For Plug And Play Error Logging?Moving elmah.axd to /admin/elmah.axd breaks the Fix IIS 5x Wildcard Mapping Module.My workaround was just to secure "elmah.axd" instead of "admin," like:

<location path="elmah.axd">
<system.web>
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<deny users="?"/>
</authorization>
</system.web>
</location>

Although this works, I feel that there's got to be a more elegant solution.

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Part Of Web.config To Insert Elmah Tag?

Jan 21, 2010

I want to write this

<elmah>
<errorlog type="Elmah.XmlFilerErrorLog, Elmah" logPath="~/App_Data" />
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or

<elmah>
<errorLog type="Elmah.SQLiteErrorLog, Elmah" logPath="~/App_Data" />
</elmah>

however every place i tried putting this tag in i get an Unrecognized configuration section elmah. error. I found this question [URL] however i tried that (solution at the bottom of the question) and still get the error. Where do i put this? i found the issue. I didnt set <sectionGroup name="elmah"> properly. I couldnt find it online then remembered the demo had sqlite logging and i checked the demo config for clues.

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Elmah Can't Reach The Database To Log An Exception?

Aug 2, 2010

OK, apparently related questions dont seem to address this directly. An exception reaches Elmah, maybe a repository cant reach a database, but then neither can Elmah reach that database. Even if they target different servers, maybe its a network problem.

Is there a way to configure fallback logs for Elmah for cases like this, e.g. a text file, message queue, email, sms, etc? If so, where do I start looking to do this, excpt for now the Elmah source code.

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C# - Catching An Exception And Clearing It Before ELMAH Gets It?

Feb 18, 2011

i have a problem where i have an exception being thrown that i am capturing in global asax. As part of this exception handling i redirect the user to a specific page because of this exception.

i also have ELMAH error handling with the email module plugged in. I do not want to receive emails for this exception. I also don't want to add this type of exception to ELMAHs ignore list, in case i want to do granular work around the exception (ie, only if it matches certain properties, happens on certain pages)

i want to:

write an Application_OnError that redirects a user to a page (i know how to do this part, more for procedure i've left it here) In the Application_OnError stop ELMAH fromrecieving this error after i've caught it

i am currently calling Server.ClearError() inside my App_OnError method, but am still receiving these emails....

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