Does SpellCheck .Net class support russian language?

While I'm using such a construction in my code and typing russian text in a textbox nothing happens:

 <TextBox SpellCheck.IsEnabled="True" />

While I'm using this construction english text is spell-checked but not russian

 <TextBox xml:lang="en-US" SpellCheck.IsEnabled="True" />

What I'm doing wrong? How do I check spelling of other languages? O开发者_StackOverflowr maybe somebody can advice me a control which checks russian?

WPF only supports four languages by default, and none of those are Russian.

However, this page on MSDN Social suggests it is possible by installing .Net Language Packs

I have tried researching this topic further and come across the following posts, http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/06a2cc61-f2ae-4534-b35a-6c676bc2bcb2/?prof=required and the Community Wiki at http://msdn.microsoft.com/en-us/library/system.windows.controls.spellcheck(v=VS.100).aspx

They do state that the language packs for .NET 3.5 and .NET 4.0 should add additional languages, however I have tried setting the TextBox control to Language="ru-RU" with SpellCheck.IsEnable="True". I installed the .NET 4.0 Russian language pack on my Windows Vista machine (English system install). The Spell Checking still does not work. I wish Microsoft were clearer on how to get a different language pack working with the spell checking.

en-US specifies that it should check American English, you probably need to set it to ru-RU and the respective language pack needs to be installed.

Edit: From the SpellCheck class:

Spelling checker is supported only when WPF provides a default dictionary. In .NET Framework 4, WPF provides dictionaries for English, French, German, and Spanish.

I thought it would work for any language pack but it might be that the source where i read about that was referring to the language packs of those four languages.