how to implement coding Formating?

Hello, we don't have C# text formatting in the WinForms version at this time.  Unfortunately the work we did in the WPF version isn't easily copyable to WinForms since there is a large core infrastructure difference between the platforms in how we do batch text changes.  We are hoping to port our newer WPF SyntaxEditor platform design back to WinForms in the future so we can get all platforms on the same general API.  That will make it much easier to keep features in sync.

Do you mean thar you will give up syntaxeditor of WinForm version?

Whether will you plan to  impletement this ?

Not at all, we still support and are adding improvements to the WinForms version.  But the main goal is to backport our newer API designs to WinForms so that the WPF, Silverlight, WinRT/XAML (work-in-progress), and WinForms versions are all on the same general codebase.  That will allow us to flow new enhancements into all the platforms rather easily, and at the same time.  I'm not sure of the timeframe yet, we first needed to get the WPF version to cover all the feature areas that are in WinForms and we are getting close to that goal.