Control/Editor /w Syntax Highlighting & Intellisense

[hufaunder]

I have a program where the user inputs some proprietary code in an
editor. I would like to use a windows form editor control that
automatically does syntax highlighting & intellisense (after I define
the vocabulary).

1) How would I do that myself? Any tips and/or links?
2) Are there any open source projects that offer this functionality?
3) What commercial products do offer this (at a reasonable price)?

Thanks

 

[Bryan Phillips]

Look at the SyntaxEditor from http://www.actiprosoftware.com/

It is used in various freeware apps like SnippetCompiler
(http://www.sliver.com/dotnet/SnippetCompiler/)
and I believe it is used in SharpDevelop
(http://www.icsharpcode.com/OpenSource/SD/Default.aspx) and CodeSmith
(http://www.codesmithtools.com).