Incorporate a CSS style sheet into the app_offline file

It's been a challenge for me to create a custom app_offline.htm page and include links to my css files in the project. Unfortunately, the code snippet below doesn't seem to be working as expected:

<link href="/Content/Themes/screen.css" rel="stylesheet" type="text/css" />

Upon checking the console, I encountered the following error message:

GET mySite/Content/Themes/screen.css 503 (Service Unavailable)

I would greatly appreciate any advice on how to properly link a css file in app_ofline.htm. Your help is highly valued!

cssasp.net-mvcapp-offline.htm

Answer №1

When the app_offline.htm file is present, it serves as a signal that the application is currently offline. This means that no resources can be accessed from the site during this period of downtime. To ensure proper functionality, make sure to include any necessary rules within the page itself or consider hosting the stylesheet on a separate domain.

Answer №2

To achieve the desired styling, it is recommended to utilize inline CSS instead of relying on an external CSS file.

<style type="text/css>
    /* Insert your CSS code here */
</style>

App_Offline.htm

Essentially, by placing a file with this name in the main directory of a web application, ASP.NET will take action to temporarily halt the application, unload the application domain from the server, and suspend any new incoming requests for that specific application. As a result, ASP.NET will then respond to all requests for dynamic pages within the application by displaying the content of the app_offline.htm file (for instance: you might want to display a message such as “under construction” or “currently undergoing maintenance”).

Answer №3

To display an image in base64 format, you can use the following code with the img tag:

<img src="data:image/jpeg;base64,<base-64 encoded string>" alt=""/>

This method is effective for showing images like a 'coming soon' message on your website.

Answer №4

Unfortunately, linking to the offline CSS file is not possible. The .Net Framework restrictions prevent any file from being served except for app_offline.htm. One workaround is to either include the CSS inline in the page or host it on a separate site, which some companies choose to do to keep design elements centralized for enterprise applications.

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