SharePoint Language specific CSS loading

Today I worked on a annoying problem where I had to figure out how to do a language specific CSS file loading during header load from a Master Page.

The solution is as following in our case:

Our code deploys under the LAYOUTS folder our project style sheets, js files etc. We created for each language ID it’s own folder and under each language folder the css file that we wanted to use for a each language.

Next we addedthe following line inside the <HEAD> element and the right CSS file based on the language ID was loaded:

<SharePoint:CssRegistration name=”<% $SPUrl:/_layouts/projectname/styles/~language/master.css %>” runat=”server”/>

In the definition above what is in bold and in blue is what you MUST add for the reference to work. What is in green and not in bold is your path where your CSS file is located. Change it to fit your needs.

What is the most interesting part is the “~language” definition in the URL. This will retrieve the proper language ID(example for English-US: en-US). The final URL reference will look something like this:


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