ASP.NET: HttpNotFoundHandler Custom Implementation
Below is a small code snippet, that implements System.Web.HttpNotFoundHandler functionality. Speaking of which - System.Web.HttpNotFoundHandler intercepts 404 (Page not found) request having .aspx extension. Custom implementation used instead because:
- System.Web.HttpNotFoundHandler is not accessible.
- Original ProcessRequest throws exception, while I want just to complete request with 404 status.
When to use and why do I need it ? Well - I find it useful when need to "remove" some page or resource, quickly put it offline, but without changing code or moving files - just add a path to web.config and associate with HttpNotFoundHandler. Various scenarios come in mind...
public class HttpNotFoundHandler : System.Web.IHttpHandler
{
public HttpNotFoundHandler() { }
public void ProcessRequest(HttpContext context)
{
string msg404 = "404 - Page not found.";
context.Response.Write(msg404);
context.Response.StatusCode = 404;
context.Response.StatusDescription = msg404;
context.ApplicationInstance.CompleteRequest();
}
public bool IsReusable
{
get { return false; }
}
}
Enjoy
Saturday, January 13, 2007 10:44 AM
