VS2013 VsPackage Update VS2015

Hi,

I wrote a VSPackage for Visual Studio 2013 in C#. Now I want to upgrade the VSPackage to Visual STudio 2015. I want to have only one vsix to execute for both Studios. Is this possible?

I put a <CASE-Statement into csproj-file so that the dlls for vs13 or vs15 are loaded. but that depends on in which visual studio the vspackage is compiled.

Any ideas?

Thank you very much. :-)

Arazon