code-editor

I'm looking for a free , syntax-highlighting , possibly autocompleting "Programmer's textbox" style control for use in a Visual Studio Windows Forms or WPF project. It should work with C# and self-defined languages, and the licence should permit its use in a closed, in-house development tool. There are pay-for solutions available - something like http://www.syncfusion.com/products/user-interface-edition/windows-forms/Edit would work fine - but I am looking for something simpler, and would prefer not to pay for unnecessary functionality. Any ideas? marc_s I've been using the SharpCode

I have a strange bug in the Visual Studio text editor. All my blank spaces are replaced by a "." public class Person { int age; } looks like this public..class..Person.......................... {.................. ..int age;................... }..................... I reset the settings to default. Didn't work. I also re-installed VS2008. Still didn't work. What's the error? Visual Studio is configured to show whitespace. Press Ctrl + R , Ctrl + W . If you are using C# keyboard mappings: (thanks Simeon) Press Ctrl + E , S . If you want to use the menu: (thanks angularsen) Edit > Advanced >