Can dotPeek be used for in-place assembly editing or opening assemblies in Visual Studio editor?

You can export a decompiled assembly as a project in Visual Studio. This feature is now available in dotPeek 1.1 EAP and higher.

However, dotPeek can't be used to edit disassembled code. This feature could be implemented in future. You can watch and/or vote for the corresponding feature request:

• In-place assembly editing: http://youtrack.jetbrains.com/issue/DOTP-533.