Skip to main content

httperrors vs customerrors in webconfig , iis, asp.net

Errors section in web config is for providing custom http error handling approach there are two section, one customErrors inside the section system.web and another httpErrors inside the section system.webServer (as given below)

There is much confusion between custom error and http error sections that IIS pick up setting from which section customErrors section or from httpErrors section, below are the explanation.

<customErrors> :

This section was in use before IIS 7 introduced, IIS 6 5 and before fully use this section for handling custom http errors according to http status code.

<httpErrors> :

IIS 7 and later use this section as well as <customErrors> section to handle custom http errors based on their file extensions if requested page extension register with ISAPI dll (.aspx, ashx, .asmx, .svc etc) like index.aspx then IIS pick up setting from <customeErrors> section else it pick up setting from <httpErrors> (IIS 7 hosted mode must be set as integrated mood not classic)

below are the examples that is for 404 error handling :

if you are requesting for any aspx or ashx file that is not exists then it shows following default customError page (set yours in customError section to change it)

custom errors section in web config :

<system.web>
   <customErrors mode="On" redirectMode="ResponseRedirect">
      <error redirect="/classifieds/page-not-found.aspx" statusCode="404" />
   </customErrors>

Default 404 page in iis 6, iis 5 or before in asp.nett
Default 404 page in iis 6, iis 5 or before

if you are requesting for any other than registered extension that is not exists like index.sadf then it shows following default httpErrors page (set yours in httpErrors section to change it)

http errors section in web config :

<system.webServer>
   <httpErrors errorMode="Custom">
    <remove statusCode="404" subStatusCode="-1" />
    <error path="/404.aspx" prefixLanguageFilePath="" responseMode="ExecuteURL" statusCode="404" />
  </httpErrors>

Default 404 page in iis7 or later in asp.net
Default 404 page in iis7 or later



Popular posts from this blog

How to validate dropdownlist in JavaScript

In this article you will see how to put validation in dropdownlist by javascript, suppose first item value of dropdownlist is 0 and text is "-Select-" just like given below and we have to validate that at least one item is selected excluding default i.e "-Select-".

Uploading large file in chunks in Asp.net Mvc c# from Javascript ajax

Often we have a requirement to upload files in Asp.net, Mvc c# application but when it comes to uploading larger file, we always think how to do it as uploading large file in one go have many challenges like UI responsiveness, If network fluctuate for a moment in between then uploading task get breaks and user have to upload it again etc.

Customize comment box in blogger

Now it is possible to customize your blogger comment box in simple way there no need to edit HTML of your blogger just through the adding some simple css to the blogger.

How to handle click event of linkbutton inside gridview

Recently I have posted how to sort only current page of gridview , Scrollble gridview with fixed header through javascript , File upload control inside gridview during postback and now i am going to explain how to handle click event of linkbutton or any button type control inside gridview. We can handle click event of any button type control inside gridview by two way first is through event bubbling and second one is directly (in this type of event handling we need to access current girdviewrow container)