How can I resolve this custom error redirect in ASP.NET

I want to redirect all url errors

The url I want to cath is ~/bla/foo

It should redirect to ~/error404.aspx

bla exists as a folder. foo does not exist.

I already set the webconfig to point to my error but I just doesn't work. I get this error:

Server Error in application /.
-------------------------------------------------- ------------------------开发者_如何转开发------

The source can not be found.
Description: HTTP 404. Perhaps you are looking for the source (or a dependency thereof)     removed or is temporarily unavailable or has changed its name. Check the spelling of the URL.

Requested URL: / bla/foo.asox

I google translate this error cuz VS here is language specific.

What can I do to resolve this??? I want to point to ~/error404.aspx

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You can also configure a custom 404 page in IIS (this example is IIS 6). That way request for any resource that doesn't exist will go to your custom error404.aspx page.

There's also a walk through here with screen shots here if that helps. This would be something you configure outside of your application.

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If you want to change the 404 message to a custom one, here are the steps to override the default one:

You can use:

protected void Application_Error(object sender, EventArgs e)
{
}

http://aspnetresources.com/articles/CustomErrorPages.aspx

There are more details in the link which show you exactly how to catch the 404 error and handle it.