Assembly: System.Runtime.Serialization (in System.Runtime.Serialization.dll)
The following example shows a service contract, ICalculator, that includes two methods, Add and MoreData. The MoreData method returns an instance of the ExtraData class, which is also declared in the code. When the implemented interface Calculator runs, an InvalidDataContractException will be thrown because the ExtraData class does not have the DataContractAttribute applied to it.
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.