---------- Forwarded message ---------- From: Kevin Connell <[email protected]> Date: Fri, Jul 11, 2014 at 8:18 PM Subject: Re: [Mono-list] Not implemented exceptions in Getters To: Dave Curylo <[email protected]>
Here is the stack trace Newtonsoft.Json.JsonSerializationException: Error getting value from 'IsSecurityCritical' on 'System.Reflection.MonoMethod'. ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.NotImplementedException: The requested feature is not implemented. at System.Reflection.MethodBase.get_IsSecurityCritical () [0x00000] in <filename unknown>:0 at (wrapper delegate-invoke) <Module>:invoke_bool__this___MethodBase (System.Reflection.MethodBase) at System.Reflection.MonoProperty.GetterAdapterFrame[MethodBase,Boolean] (System.Reflection.Getter`2 getter, System.Object obj) [0x00000] in <filename unknown>:0 at System.Reflection.MonoProperty.GetValue (System.Object obj, System.Object[] index) [0x00000] in <filename unknown>:0 --- End of inner exception stack trace --- at System.Reflection.MonoProperty.GetValue (System.Object obj, System.Object[] index) [0x00000] in <filename unknown>:0 at Newtonsoft.Json.Utilities.ReflectionUtils.GetMemberValue (System.Reflection.MemberInfo member, System.Object target) [0x00000] in <filename unknown>:0 at Newtonsoft.Json.Serialization.ReflectionValueProvider.GetValue (System.Object target) [0x00000] in <filename unknown>:0 --- End of inner exception stack trace --- at Newtonsoft.Json.Serialization.ReflectionValueProvider.GetValue (System.Object target) [0x00000] in <filename unknown>:0 at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.CalculatePropertyValues (Newtonsoft.Json.JsonWriter writer, System.Object value, Newtonsoft.Json.Serialization.JsonContainerContract contract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonProperty property, Newtonsoft.Json.Serialization.JsonContract& memberContract, System.Object& memberValue) [0x00000] in <filename unknown>:0 at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject (Newtonsoft.Json.JsonWriter writer, System.Object value, Newtonsoft.Json.Serialization.JsonObjectContract contract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonContainerContract collectionContract, Newtonsoft.Json.Serialization.JsonProperty containerProperty) [0x00000] in <filename unknown>:0 2014-07-11 11:39:27,093 On Fri, Jul 11, 2014 at 8:07 PM, Dave Curylo <[email protected]> wrote: > On Friday, July 11, 2014, Kevin Connell <[email protected]> wrote: > >> Is throwing a NotImplementedExceptions an appropriate pattern in a >> getter? >> >> > Not really an appropriate pattern, no. Which classes were these? Part of > the mono framework? > > "Avoid throwing exceptions from property getters. > Property getters should be simple operations without any preconditions. If > a getter might throw an exception, consider redesigning the property to be > a method. This recommendation does not apply to indexers. Indexers can > throw exceptions because of invalid arguments." > > From > http://msdn.microsoft.com/en-us/library/vstudio/ms229006(v=vs.100).aspx > >
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