web.config

Complete example using custom errors and write errors to the Event log 日志记录

<configuration>  
<system.web>
 <customErrors mode="On" defaultRedirect="/eventlog/customerrorpage.aspx">
    <error statusCode="404" redirect="/eventlog/404Page.aspx"/>
    <error statusCode="403" redirect="/eventlog/403page.aspx"/>
  </customErrors> 
</system.web>
</configuration>