Gets or sets a value that specifies whether the Formatter object serializes reply messages.
Assembly: System.ServiceModel (in System.ServiceModel.dll)
Use the property to indicate whether the formatter serializes operation parameters into a reply message or whether the first parameter is sent as the outbound message.
If set to false, the return value of the operation must be of type Message or an exception is thrown.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.