Remind me please about custom error handling

[Guest]

I am deep into a project and cannot get this to work correctly.
I am trying to make a custom error page that will be able to know what
exception occurred. I already know about the defaultRedirect page -

<customErrors mode="on" defaultRedirect="Error.aspx"/>

But how do I reference the exception that occurred from that page?
If I cant, then should I use the Application_Error event in global.asax ?
And if I do that, then what about hiding the error from the user?

Please tell me what I'm missing because I just cant see it now.

 

[Guest]

If you want to capture the exception, you can use Application_Error in
global.asax and use the Server.GetLastError to get the exception.

 

[Guest]

I would still like to redirect the user to another page and log that error.
I guess my question is how can I do both?

 

[Guest]

You can log the error message in Application_Error and then redirect the user
to the error page.

 

[Guest]

Right, but how will that page know the exception that occurred?
global.asax ... error event handler knows the exception from
server.GetLastError but the page wouldn't know the exception. Am I right?

 

[Guest]

Correct. That is why I told you to log your error in Application_Error via
Server.GetLastError and then have the user redirected to the error page that
just displays a typical "We're sorry, .......". If you handle your own error
in Application_Error and you have <customErrors> turned on, ASP.NET will
autotically redirect the user to the error page as long as you don't call
Server.ClearError in Application_Error. If you call Server.ClearError, they
you have to redirect the client to the error page yourself and you can pass
additional parameters to the page such as the actual error messsage.