Custom Exception type with Xamarin.Android and AppCenter SDK "is not marked as serializable."

[alexsorokoletov]

Hi!

Wondering, how do we resolve this warning below?
ApiException is defined in the PCL (I know I know) and is marked with [DataContract].

[MobileCenterCrashes] System.Runtime.Serialization.SerializationException: Type '***********.Sdk.Core.ApiException' in Assembly '***********.Sdk.Core, Version=1.0.6541.21029, Culture=neutral, PublicKeyToken=null' is not marked as serializable.
[MobileCenterCrashes]   at System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitSerialize (System.Object obj, System.Runtime.Serialization.ISurrogateSelector surrogateSelector, System.Runtime.Serialization.StreamingContext context, System.Runtime.Serialization.Formatters.Binary.SerObjectInfoInit serObjectInfoInit, System.Runtime.Serialization.IFormatterConverter converter, System.Runtime.Serialization.Formatters.Binary.ObjectWriter objectWriter, System.Runtime.Serialization.SerializationBinder binder) [0x00107] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
[MobileCenterCrashes]   at System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.Serialize (System.Object obj, System.Runtime.Serialization.ISurrogateSelector surrogateSelector, System.Runtime.Serialization.StreamingContext context, System.Runtime.Serialization.Formatters.Binary.SerObjectInfoInit serObjectInfoInit, System.Runtime.Serialization.IFormatterConverter converter, System.Runtime.Serialization.Formatters.Binary.ObjectWriter objectWriter, System.Runtime.Serialization.SerializationBinder binder) [0x00006] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
[MobileCenterCrashes]   at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Serialize (System.Object graph, System.Runtime.Remoting.Messaging.Header[] inHeaders, System.Runtime.Serialization.Formatters.Binary.__BinaryWriter serWriter, System.Boolean fCheck) [0x0018b] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
[MobileCenterCrashes]   at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize (System.IO.Stream serializationStream, System.Object graph, System.Runtime.Remoting.Messaging.Header[] headers, System.Boolean fCheck) [0x0006e] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
[MobileCenterCrashes]   at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize (System.IO.Stream serializationStream, System.Object graph, System.Runtime.Remoting.Messaging.Header[] headers) [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
[MobileCenterCrashes]   at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize (System.IO.Stream serializationStream, System.Object graph) [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
[MobileCenterCrashes]   at Microsoft.Azure.Mobile.Crashes.CrashesUtils.SerializeException (System.Exception exception) [0x0000c] in <39aacded211f4ad3ac8b3f87600853cf>:0 

Thank you!

[guperrot]

Hi, your exception needs to have the [Serializable] attribute to be looked at on client side with our APIs after the restart with the getters. It does not impact any feature on server side though.

[guperrot]

For PCL you can probably do this trick: https://stackoverflow.com/a/12903494/598520 to have access to the attribute.

[alexsorokoletov]

@guperrot thank you for the advice!
I had to remove #if PORTABLE since in my PCL those symbols were not defined for some reason.
Other than that everything looks good.

Removing that "fake" attribute makes problem appear again.
We can close this issue.

[guperrot]

Glad it worked for you, thanks for using App Center.