Silverlight - ＆gt;通过表达式设置枚举值 - ＆gt; TypeAccessException

Question

follogwing代码生成我的Setter Func，我可以通过字符串设置对象的枚举属性！

    public static Action<TObject, TProperty> GetPropSetter<TObject, TProperty>(PropertyInfo pinfo)
    {
        ParameterExpression paramExpression = Expression.Parameter(typeof(TObject));

        ParameterExpression paramExpression2 = Expression.Parameter(typeof(TProperty), pinfo.Name);

        var prop2 = Expression.Convert(Expression.Call(typeof (Enum).GetMethod("Parse", new Type[] {typeof (Type), typeof (string), typeof(bool)}), Expression.Constant(pinfo.PropertyType), paramExpression2, Expression.Constant(true)), pinfo.PropertyType);

        MemberExpression propertyExpression = Expression.Property(paramExpression, pinfo.Name);

        Action<TObject, TProperty> result = Expression.Lambda<Action<TObject, TProperty>>
            (
                Expression.Assign(propertyExpression, prop2), paramExpression, paramExpression2
            ).Compile();

        return result;
    }

这在WPF中完美运行！但是当我在Silverlight中运行它时出现了这个错误：

  

Fehler beim Versuch von Methode   “DynamicClass.lambda_method（System.Runtime.CompilerServices.Closure，   MCC.ConnectorsV2.WMSConnectorServiceInterfaces.DTO.TransportLabelDTO，   System.String）“，auf Typ”System.RuntimeType“zuzugreifen。