DataContractJsonSerializer.WriteObject Method (Stream, Object)
Assembly: System.Runtime.Serialization (in System.Runtime.Serialization.dll)
The type being serialized does not conform to data contract rules. For example, the DataContractAttribute attribute has not been applied to the type.
There is a problem with the instance being written.
The maximum number of objects to serialize has been exceeded. Check the MaxItemsInObjectGraph property.
Available since 8
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Available since 8.1