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UnderstoodHeaders Class

Represents a collection of message headers that are understood. This class cannot be inherited.

Namespace:  System.ServiceModel.Channels
Assembly:  System.ServiceModel (in System.ServiceModel.dll)

public sealed class UnderstoodHeaders : IEnumerable<MessageHeaderInfo>, 

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 a header exists in the Message.Headers collection that must be understood, but is not found in this collection.


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

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.

.NET Framework

Supported in: 3.5, 3.0

.NET Compact Framework

Supported in: 3.5