What Reflection Permission are allowed in Medium Trust?

I want to ask that which methods/classes are allowed in Medium Trust. For example, whether these methods are allowed?

GetProperties, GetMethods, Activator.CreateInstance,开发者_如何学运维 Assembly.Version, AssemblyName.Name

Please tell me which methods are allowed.

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GetMethods and Activator.CreateInstance should be allowed IIRC, whilst AssemblyName and Assembly.Version aren't. I've used the first two methods in Medium-Trust environments and the latter two didn't work. Best way is just through trial-and-error really. Also might help by using Reflector when you do get stuck, to find out why stuff isn't allowed (normally [PrincipalPermission(SecurityAction.Demand, AspNetHostingPermission.High/Full)] attribute on a class somewhere higher up the call stack).

HTH,

Benjamin

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Tools like permview (.NET 1.1 only) or permcalc (.NET 2.0) can help tell you about the security permission demands your assembly or assemblies will require; it's a little easier than doing trial-and-error bases analysis because you might forget to manually exercise a code path that tries to do a security-related demand.

Unfortunately the MSDN documentation doesn't explicitly list the security requirements of every method or property call.