Are there any controls to edit text with intellisense?

Question

Are there any .net controls (hopefully WPF) to enter queries based on application rule engine (or language definition)? Something like SQL with intellisense or Jira advanced filter?

In other words i would like to allow a user to enter something like this into a text area

(type='apple' and color='green' and quantity>10) or (type='tomato' and color<>'red')

and the application would suggest a next valid token like intellisense.

Answer 1

You could look at using the (standalone) rules engine from Workflow Foundation: http://footheory.com/blogs/bennie/archive/2007/05/10/alternative-applications-for-the-wf-rule-engine.aspx

Answer 2

I haven't used it myself, but LINQPad uses Actipro SyntaxEditor, which would at least be worth looking at.