SoapElementAttribute.IsNullable Property

Gets or sets a value that indicates whether the XmlSerializer must serialize a member that has the xsi:null attribute set to "1".

Namespace: System.Xml.Serialization
Assembly: System.Xml (in system.xml.dll)

public bool IsNullable { get; set; }
/** @property */
public boolean get_IsNullable ()

/** @property */
public void set_IsNullable (boolean value)

public function get IsNullable () : boolean

public function set IsNullable (value : boolean)

Property Value

true if the XmlSerializer generates the xsi:null attribute; otherwise, false.

The XML schema specification for structures allows an XML document to explicitly signal that an element's content is missing. Such an element contains the attribute xsi:null set to "1". For more information, see the World Wide Web Consortium ( specification named "XML Schema Part 1: Structures".

If the IsNullable property is set to true, the xsi:null attribute is generated for class members that have been set to a null reference (Nothing in Visual Basic). For example, if you set a field named MyStringArray to a null reference (Nothing in Visual Basic), the XmlSerializer generates the following XML code.

 <MyStringArray xsi:null = "1" />

If the IsNullable property is false, no XML element is generated.


You cannot apply the IsNullable property to a member typed as a value type because a value type cannot contain a null reference (Nothing in Visual Basic).

Windows 98, Windows 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 Edition

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

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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