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In below picture how to avoid showing of framework versions in default error message by IIS?
In below picture how to avoid showing of framework versions in default error message by IIS?
As far as I know, if you set the custom error's mode attribute to On or remoteonly in the web.config. It will hide the details information for the error message and framework versions in default error message by IIS like below:
There is no need to hide the framework versions when you debug the whole application in the server, since customer will not see the details error message.
yes create a custom response
If you want to create a custom error handler for asp.net web api, I suggest you could try to create a class inherits ExceptionFilterAttribute and overried the OnException method.
More details, you could refer to below answer's error handling part.
https://stackoverflow.com/a/22163675/7609093
Related
I am attempting to create a custom error page display to run in my app when there is an issue with the database connection string.
When I alter the string to something invalid, I receive the error mentioned in the title above.
Is there any way to override this page and show a more informative one that would tell me that my DB connection string is wrong?
There is a InvalidOperationException that is thrown in the Startup.cs file, but I'm unsure on how to extract this from the startup file and use it, when my app fails to start in the first place.
Is this possible to do?
You can disable the default error page by using the disableStartUpErrorPage="true" setting in web.config for the IIS hosting module. This will just fallback to another custom error page of your choosing served by IIS, rather than allowing you to show a dynamic custom page.
Documentation
I have configured the HttpErrors section in my web.config.
My custom error page is shown, but not when an exception occurs outside a web request (eg: Application startup, module initializing...), I get the following error:
The page cannot be displayed because an internal server error has occurred.
How can I make sure that my custom error page is ALWAYS shown?
You can't. The customer error pages are being configured at the start of the ASP.NET application, which fails in your case. There is no ASP.NET pipeline to handle the error pages.
Usually there is not much to do, besides making a proxy that filters out HTTP 500 error messages and replaces it with another message.
Is there any way to add custom headers without creating HttpHandler? I've tried the following two APIs but the former is throwing error and the latter is working fine but when the page is either redirected or posted to another page. The header is lost. Thanks for your suggestion.
Response.Headers.Add()
Response.AppendHeader()
Environment: ASP.NET 3.5 & IIS 6
According to MSDN documentation:
"The Headers property is only supported with the IIS 7.0 integrated
pipeline mode and at least the .NET Framework 3.0. When you try to
access the Headers property and either of these two conditions is not
met, a PlatformNotSupportedException is thrown."
Since you are using IIS6 I'd expect you to get a PlatformNotSupportedException exception raised. Are you?
Try using Response.AppendHeader() method instead. For example:
Response.AppendHeader("CustomAspNetHeader", "Value1");
You can also use Response.ClearHeaders() to remove any headers first, if need be.
Is there a good way to exclude some errors from being redirected to the default custom error page?
I'm using aspnet membership provider and have just discovered that if for example a user tries to change their email address to one that is already in the system, rather than show the error message warning in the style of a validation error as was designed, since I turned on custom errors, it just redirects to the standard error page.
Do I need to specifically exclude error codes for this problem?
Here is the custom error section in the web config:
<customErrors mode="On" defaultRedirect="/Error/Error500" />
Thanks very much
You need to stop the exception bubbling up in this case, and implement some validation to check if the email address exists.
Your call to CreateUser should return a MembershipCreateStatus as an error code.
MembershipCreateStatus.DuplicateEmail
See here for more error codes.
So I have a web page written in C# for ASP.NET and in some cases it returns a custom error.
For example, at one point it can be like:
Response.StatusCode = 400;
Response.Status = "A long custom error message here.";
Response.Write(Resonse.Status);
and when I open this up locally (through http://mymachinename/foo/bar.aspx) I see my custom error message. When I deploy it to a remote server I just see my custom error message overwritten with the text "Bad Request" (that's all). It must be some configuration, but I can't find it.
Check to see if you have the httpErrors attribute defined in your web.config.
<system.webServer>
<httpErrors existingResponse="PassThrough" />
</system.webServer>
Servers can have their own configuration files with error codes like you mentioned. For example, editing the .htaccess file on an apache server will allow you to link your own error pages to the exceptions, or you can just write in the markup yourself to save some time.
Update
You can also do
Response.TrySkipIisCustomErrors
if you are using IIS that is.
Additional Info
http://blogs.iis.net/ksingla/archive/2008/02/18/what-to-expect-from-iis7-custom-error-module.aspx
Those solutions provided by other guys are perfectly valid, But I think you can control it from you IIS Manager too, if there is a defined error page with code 400, Open your IIS Manager, go to .Net Error Pages, look for error code 400 click on edit feature setting on the right panel then select Off in the opened Edit Error Page Setting window.