push your dll in gac on build succeded
In your projet setiings click on Build Events, in post buil events add command below
"C:\Program Files (x86)\Microsoft SDKs\Windows\v8.1A\bin\NETFX 4.5.1 Tools\gacutil.exe" /if "$(TargetPath)" 
Visual Studio Push Dll to Gac on Build Succeded
In VisualStudio