The WPF SpellChecker control provides spell checking functionality to your application. Error words underlined automatically and it can be corrected through suggestions in context menu. It can perform spell checking on text editor controls and offers built-in features to correct error words, ignore special words, and add new terms in the dictionary. It also supports using a custom dictionary to check spelling.
The spell checker provides Microsoft Office-like context menu suggestions that help users correct spelling errors by letting them choose from the listed suggestions.
The spell checker supports adding suggestions from a user-defined custom dictionary.