WPF spell check specific language

Question

We are developing an application that needs a spell checker in multilanguage beginning. For cases in English, French, Spanish and German applying the RichTextBox works perfect language with xml property: lang = ... But when we apply the concealer with the Catalan language, this does not work. We tried putting the property xml: lang = "ca" which is code that recommends rfc 3066. I understand that .net should take the words of the languages I mentioned before somewhere to check whether it is correctly written. Are any language pack for Catalan must be installed? Are not .net support for this language?

Answer 1

In .NET Framework 4, WPF provides dictionaries for English, French, German, and Spanish.

This is from the MSDN on Spellcheck : https://msdn.microsoft.com/en-us/library/system.windows.controls.spellcheck%28v=vs.110%29.aspx

It also suggests how you can add custom dictionaries with lexicon files, which should help you implement what ever languages you need.