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DataMemberAttribute.IsRequired Property

Gets or sets a value that instructs the serialization engine that the member must be present when reading or deserializing.

Namespace:  System.Runtime.Serialization
Assembly:  System.Runtime.Serialization (in System.Runtime.Serialization.dll)

member IsRequired : bool with get, set

Property Value

Type: System.Boolean
true, if the member is required; otherwise, false.

ExceptionCondition
SerializationException

the member is not present.

The property is used for ensuring compatibility with future versions of a type. For more information, see Data Contract Versioning and Best Practices: Data Contract Versioning.

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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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