Add CSS from Extension to all pages?

Topics: ASP.NET 2.0, Controls
Mar 17 at 5:30 PM

I want to add a CSS-Stylesheet via an extension to the page header (Link-Tag).

I tried this:
            Post.Serving += Publishable_Serving;
            BlogEngine.Core.Page.Serving += Publishable_Serving;
            LiteralControl ltr = new LiteralControl();

            string path = //...some file
            ltr.Text = string.Format("<link  type=\"text/css\" rel=\"stylesheet\" href=\"{0}\"></link>", path);

But this approach has two problems:
  1. The CSS gets added for each rendered Post on the page
  2. It does not work when doing a search ...
I know why this all happens, but what I am missing is a way to always add the HTML-Tag once to the header, for each Request involving HTML output.
Mar 17 at 6:45 PM
From MediaElementPlayer extension:
private static void AddStylesheet(string href, Page page)
  BlogEngine.Core.Web.Scripting.Helpers.AddStyle(page, href);
Mar 17 at 7:57 PM
Edited Mar 17 at 8:15 PM
Thanks for your anwser. I tried it this way before, same problem.
As soon as I navigate to BlogEngine.NET/contact Or BlogEngine.NET/search?q=something there is no StyleSheet present.
Other pages/posts work fine, except the root page, list of posts, adds the css multiple times...)
I am using the latest version from git master.

Here is a real life example
Choose the white layout on the top right ... if the layout changes back to red, the CSS has not been added (I added the red css as a hardcoded fallback atm)

Click on Contact or a Tag in the TagCloud ...
Mar 17 at 8:45 PM
Contact or search are not "publishable" pages. That "serving" event is part of IPublishable interface, it won't and should not work outside regular post or page.
Mar 17 at 8:50 PM
Edited Mar 17 at 9:48 PM
So, it's not possible to do this with an extension?
Guess I have to alter the BlogEngine.NET code then to make this possible?

Okay, I found a way:
Added a Pipeline class to add Action<T> to a List.

This list will be executed on Page_PreRender of a MasterPage.

And with
ContentPlaceHolder c = page.FindControl("HeadContent") as ContentPlaceHolder;
LiteralControl ltr = new LiteralControl();
I am able to add the CSS just once to my Page.

Extension CSSSwitch is born ... somehow
Marked as answer by Rabite on 3/17/2016 at 2:45 PM