Assembly: System.ServiceModel (in system.servicemodel.dll)
public final class UnderstoodHeaders implements IEnumerable<MessageHeaderInfo>, IEnumerable
This class contains a collection of message headers that are understood. SOAP processors at various layers (Security, Reliability, Transaction and application dispatcher) must add their MustUnderstand headers to this collection after processing the headers. The dispatcher throws a MessageHeader fault if an header exists in the Message.Headers collection that must be understood, but is not found in this collection.
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter EditionThe Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.