Controllers in MVC use this method when an error occurs on an action:

protected override void OnException?(ExceptionContext? filterContext)

I had to handle this method and rethrow the error to get ELMAH logging to work when <customErrors mode= was set to "On".

Looks like ASP.net MVC 1.0 ignores axd files so you shouldn't need this extra step anymore.

I confirm what step 4 is unnecessary.

Missing some details, found this on StackOverflow?:

    <system.web>
        <httpModules>
            <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah"/>
            <add name="ErrorMail" type="Elmah.ErrorMailModule, Elmah" />
        </httpModules>
    </system.web>
    <system.webServer>
        <validation validateIntegratedModeConfiguration="false" />
        <modules runAllManagedModulesForAllRequests="true">
            <remove name="ErrorLog" />
            <remove name="ErrorMail" />
            <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" preCondition="managedHandler" />
            <add name="ErrorMail" type="Elmah.ErrorMailModule, Elmah" preCondition="managedHandler" />
        </modules>
    </system.webServer>

Hi there. I just wanted to point out that since MVC now ignores .axd files by default this article is no longer relevant.

Jon: The problem you are seeing is related to running ELMAH IIS7, not MVC in particular.

Do I need to do anything special to make it work with Visual Studio build-in web server(aka Cassini)? I get it working easily on IIS, but using same configuration, it doesn't work with Cassini. When I requested the log page via http://localhost:62364/elmah.axd, I had "The resource cannot be found."

I am facing the same issue, elmah.axd is not working on Cassini. I am using Windows 7 and Visual Studio 2008.

I'm using the filter from MvcContrib? which causes nice error pages, my own views, to be shown when an error occurs. The problem is that when that happens, ELMAH doesn't send me an email about the problem and I still would like to know that something went wrong.

It seems the key is in ExceptionContext?'s exceptionHandled. When set to true, ELMAH doesn't send the email and I get my own view, if I set it to false ELMAH does send the message but I get an ugly message from IIS. Any ideas how to show the nice view and get the email?

Handle the exception normally and then ErrorSignal?.FromCurrentContext?().Raise(ex); to tell ELMAH about it.

I added to system.web/httpHandlers & httpModules and it was working only on local machine and not on remote server.

Then I also added to system.webServer/handlers & modules to make it work.

Please see http://stackoverflow.com/questions/933554/elmah-not-working-with-asp-net-site

Thanks.

We have implemented ELMAH in our application.It is running on windows server2008 IIS 7.our application is in UAT.If any changes happening in our sqlserver2008 its not getting reflected in our application.After we remove the ELMAH setting from the Webconfig file, the sqlserver2008 changes are getting reflected in our application. Please help us to solve this issue..

To reiterate the link posted from conceptworld, here's the code needed to get ELMAH working in an ASP.NET MVC 2 project both locally and on a shared host:

<system.web>
...
  <httpHandlers>
    ...
    <add verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah" />
    ...
  </httpHandlers>
  <httpModules>
    ...
    <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah"/>
    <add name="ErrorMail" type="Elmah.ErrorMailModule, Elmah" />
    <add name="ErrorFilter" type="Elmah.ErrorFilterModule, Elmah" />
    ...
  </httpModules>
  ...
</system.web>
<system.webServer>
  ...
  <modules runAllManagedModulesForAllRequests="true">
    ...
    <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah"/>
    <add name="ErrorMail" type="Elmah.ErrorMailModule, Elmah" />
    <add name="ErrorFilter" type="Elmah.ErrorFilterModule, Elmah" />
    ...
  </modules>
  <handlers>
    ...
    <add name="Elmah" verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah" />
    ...
  </handlers>
<system.webServer>

Is there any reason why the YSOD would not be saved in an ASP.NET MVC 2 application?

Slightly off topic, but CodeSmith? Insight provides the same advanced error reporting functionality as ELAMH, but it is designed to work with MVC right out of the box. Just wanted to throw that one out there. www.codesmithtools.com/product/insight

If your elmah handler isn't in the root of your site, e.g. admin/emlah.axd, you'll still need to add an ignore route such as the following:

routes.IgnoreRoute("admin/elmah.axd/{*pathInfo}");

The {*pathInfo} part is also necessary so that style sheets, rss, and other links work correctly.

Here is an example of code I used to add elmah of native MVC controller:

http://www.beletsky.net/2011/03/integrating-elmah-to-aspnet-mvc-in.html

Mine would not work until I added this into my httpModules: <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" />

Anyone noticing that ELMAH isn't logging errors when used with MVC should also check out:

http://stackoverflow.com/questions/766610/how-to-get-elmah-to-work-with-asp-net-mvc-handleerror-attribute/779961#779961

Just added it using NuGet?. It set-up my web.config so it just worked. No effort.

Very important post on SO on using Elmah using HandleError? Attribute http://stackoverflow.com/questions/766610/how-to-get-elmah-to-work-with-asp-net-mvc-handleerror-attribute/779961#779961

There is NuGet? package that delivers contoller in Admin area, to access ELMAH

http://nuget.org/List/Packages/Elmah.MVC

great !!

<!-- Web.Config Configuration File -->

<configuration>

<system.web>

<customErrors mode="RemoteOnly"/>

</system.web>