WCF run time exception.

Sujeet Suman

9y1.3k

I am getting below error logged in log file.

Can any body hep me to come out.

Log file exception text:

http://msdn.microsoft.com/en-IN/library/System.ServiceModel.ServiceOperationExceptionOnReply.aspx

Replying to an operation threw a exception.

DriveServerService.vshost.exe

System.ServiceModel.Dispatcher.ImmutableDispatchRuntime/37425289

System.Runtime.Serialization.InvalidDataContractException, System.Runtime.Serialization, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089

Type 'System.Collections.ArrayList+SyncArrayList' is an invalid collection type since it does not have a default constructor.

at System.Runtime.Serialization.CollectionDataContract.GetValidContract(SerializationMode mode)

at System.Runtime.Serialization.DataContract.GetDataContract(RuntimeTypeHandle typeHandle, Type type, SerializationMode mode)

2 Replies

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Sujeet Suman9y ago
Hi Bikesh Thanks for reply. I have already debugged the code. But problem is that

Client calling - Server side method properly

Server side method executing properly but when returning some user defined type to client
, then client side changed debugging colour YELLOW to GREEN and loging excepting in log file, which I shared in my question.

So can you please review my exception text.

Can you please explore the meaning or details of below exception text:
'System.Collections.ArrayList+SyncArrayList' is an invalid collection type since it does not have a default constructor
0
Bikesh Srivastava9y ago
I think you should use debug on your code ,
definatly you will found exact error.
0