> Is there a way to get round this (without creating a set accessor in the > interface/NormalUser object and throwing an exception in it's method) - > properties in reality are functions (right?) so I should be able to do > this > from the CLR's point of view.
I haven't tried this recently, but I believe you totally can do this from the CLR's point of view. Unfortunately, the C# compiler won't let you emit the particular IL you need. So either switch to a language that does support this construct, throw the exception like you mentioned, or define another method on the class that lets you set the value of the property. You can read messages from the Advanced DOTNET archive, unsubscribe from Advanced DOTNET, or subscribe to other DevelopMentor lists at http://discuss.develop.com.
