ClickOnce を配布先（社内/検証用・納品先/実環境）で判別するには

ApplicationDeployment.CurrentDeployment.UpdateLocation しか見る所がないようです?

IsNetworkDeployed = True
ActivationUri =
DataDirectory = C:\Users\ku_000\AppData\Local\Apps\2.0\Data\8L6E4H3N.KPW\TV6BTE6H.0Z7\wind..tion_e4e92360855617ca_0001.0000_1c2f8407d29494ea\Data
UpdateLocation = file://dd36/WindowsFormsApplication20/WindowsFormsApplication20.application