How to edit disassembled code in dotPeek?

Question

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

Answer

dotPeek can't be used to edit disassembled code. Here is a feature request for this feature: DOTP-533 Enable reflexil-like functionality to edit assemblies inplace. 

It is possible to export a decompiled assembly as a project and immediately open it in Visual Studio.