XmlObjectSerializer.WriteStartObject Method (XmlDictionaryWriter, Object)
Writes the start of the object's data as an opening XML element using the specified XmlDictionaryWriter.
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 serialized.
the maximum number of objects to serialize has been exceeded. Check the MaxItemsInObjectGraph property.
Available since 4.5
Available since 3.0
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Available since 8.1