Adding a reference from a xproj to a csproj
问题 I have a ".net 4.6.1" (A) project and a ".net core 1.5" (B) project. I want add a reference to "project_B_core_1.5" in my "project_A_net461" . At the beginning I got: A reference could not be added. An assembly must have a 'dll' or 'exe' extension in order to be referenced. Then I tried to add "net461" to "frameworks" in the core project (*). I Tried to add it again to "project_A_net461" , and this time there was no error. The problem is that I can't access the namespace: The type or