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POCannot reference custom event from web.config
 

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    <p>I've written a custom event <code>MyWebErrorEvent</code> derived from <code>WebErrorEvent</code> located in the App_Code folder of my ASP.NET 2.0 Web Site Project. The class <code>MyWebErrorEvent</code> is not contained within a namespace. I've put the following into my web.config file:</p> <pre><code>&lt;configuration&gt; &lt;system.web&gt; &lt;healthMonitoring&gt; &lt;eventMappings&gt; &lt;add name="Event1" startEventCode="0" endEventCode="2147483647" type="MyWebErrorEvent"/&gt; &lt;/eventMappings&gt; &lt;/healthMonitoring&gt; &lt;/system.web&gt; &lt;/configuration&gt; </code></pre> <p>At compile time and run time I get the following error:</p> <pre><code>Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. Parser Error Message: Could not load type 'MyWebErrorEvent'. Source Error: Line 16: &lt;healthMonitoring&gt; Line 17: &lt;eventMappings&gt; Line 18: &lt;add name="Event1" startEventCode="0" endEventCode="2147483647" type="MyWebErrorEvent"/&gt; Line 19: &lt;/eventMappings&gt; Line 20: &lt;/healthMonitoring&gt; </code></pre> <p>The class MyWebErrorEvent does indeed compile without errors. Anyone know how to fix this?</p> <p><strong>EDIT:</strong> <a href="http://msdn.microsoft.com/en-us/library/bb398933.aspx" rel="nofollow noreferrer"><a href="http://msdn.microsoft.com/en-us/library/bb398933.aspx" rel="nofollow noreferrer">http://msdn.microsoft.com/en-us/library/bb398933.aspx</a></a> says that this should work for custom events. A quote:</p> <blockquote> <p>Add the assembly that contains the custom Web event implementation to the Bin subdirectory of the ASP.NET application. Alternatively, you can add the event source code file to the App_Code subdirectory.</p> </blockquote> <p>However it also says this will not work for custom event providers:</p> <blockquote> <p>Put the assembly that contains the custom provider implementation in the application's Bin subdirectory. You cannot put the provider source code file in the App_Code subdirectory, because the health monitoring system is configured and created before any code files in the App_Code subdirectory are compiled. </p> </blockquote> <p>I'm guessing the documentation is actually incorrect about custom events and they must go into a assymbly distinct from the web site.</p>
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    1. COI've also downloaded the source from http://aspnet.4guysfromrolla.com/articles/062707-1.aspx and get the same type of error where the custom event cannot be found in the App_Code folder from the web.config file.
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