Integrate (as-you-type and dialog) Multilingual spell checking functionality into ASP.NET applications with Rapid Spell Web and the Rapid Spell Dictionaries . Several dictionaties available: Dutch, German, French, Spanish, Portuguese, Brazilian Portuguese, Medical, Danish, Italian, Norwegian, Swiss, German, Greek.

RapidSpell Web includes 2 interfaces, an inline highlighter and a fast (no post back) dialog interface.

The RapidSpellWInline control provides Windows style in-text-box highlighting, with editable text box support for modern browsers and static 'overlay' support for older browsers.

The UI provides all the usual features, add (to user dictionary), change, change all, ignore, ignore all, and smart suggestions. The user dictionary is stored on the server and can be unique per user, or shared amongst groups. The spell checker UI features an advanced preview pane to interactively highlight errors (with no post back), and accepts manual corrections.

By implementing a custom interface you have the flexibility to decide which textbox is checked, using Javascript. This example implements the interface and uses two buttons to switch which textbox is to be checked, and then launch the checker.