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MessageHeaderInfo.MustUnderstand Property

Gets or sets a value that indicates whether processing the message header is mandatory or optional.

Namespace:  System.ServiceModel.Channels
Assemblies:   System.ServiceModel.Primitives (in System.ServiceModel.Primitives.dll)
  System.ServiceModel (in System.ServiceModel.dll)

public abstract bool MustUnderstand { get; }

Property Value

Type: System.Boolean
true if processing the message header is mandatory; otherwise, false.

If this property is true and the message receiver cannot interpret the message header, the message is not processed and an exception is thrown. If this property is false, the receiver can ignore the message header and continue processing.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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