@@ -113,6 +113,23 @@ internal static IntPtr ToPython<T>(T value)
113113return ToPython ( value , typeof ( T ) ) ;
114114}
115115
116+ private static readonly Func < object , bool > IsTransparentProxy = GetIsTransparentProxy ( ) ;
117+
118+ private static bool Never ( object _ ) => false ;
119+
120+ private static Func < object , bool > GetIsTransparentProxy ( )
121+ {
122+ var remoting = typeof ( int ) . Assembly . GetType ( "System.Runtime.Remoting.RemotingServices" ) ;
123+ if ( remoting is null ) return Never ;
124+
125+ var isProxy = remoting . GetMethod ( "IsTransparentProxy" , new [ ] { typeof ( object ) } ) ;
126+ if ( isProxy is null ) return Never ;
127+
128+ return ( Func < object , bool > ) Delegate . CreateDelegate (
129+ typeof ( Func < object , bool > ) , isProxy ,
130+ throwOnBindFailure : true ) ;
131+ }
132+
116133internal static IntPtr ToPython ( object value , Type type )
117134{
118135if ( value is PyObject )
@@ -162,15 +179,8 @@ internal static IntPtr ToPython(object value, Type type)
162179var pyderived = value as IPythonDerivedType ;
163180if ( null != pyderived )
164181{
165- #ifNETSTANDARD
166- return ClassDerivedObject . ToPython ( pyderived ) ;
167- #else
168- // if object is remote don't do this
169- if ( ! System . Runtime . Remoting . RemotingServices . IsTransparentProxy ( pyderived ) )
170- {
182+ if ( ! IsTransparentProxy ( pyderived ) )
171183return ClassDerivedObject . ToPython ( pyderived ) ;
172- }
173- #endif
174184}
175185
176186// hmm - from Python, we almost never care what the declared