FrameworkPropertyMetadata.DefaultUpdateSourceTrigger Property

Gets or sets the default for UpdateSourceTrigger to use when bindings for the property with this metadata are applied, which have their UpdateSourceTrigger set to Default.

Namespace: System.Windows
Assembly: PresentationFramework (in presentationframework.dll)
XML Namespace:

public UpdateSourceTrigger DefaultUpdateSourceTrigger { get; set; }
/** @property */
public UpdateSourceTrigger get_DefaultUpdateSourceTrigger ()

/** @property */
public void set_DefaultUpdateSourceTrigger (UpdateSourceTrigger value)

public function get DefaultUpdateSourceTrigger () : UpdateSourceTrigger

public function set DefaultUpdateSourceTrigger (value : UpdateSourceTrigger)

 Members of this class are either not typically used in XAML, or cannot be used in XAML. 

Property Value

A value of the enumeration, other than Default.

Exception typeCondition


This property is set to Default; the value you set is supposed to become the default when requested by bindings.


The metadata has already been applied to a dependency property operation, so that metadata is sealed and properties of the metadata cannot be set.

Properties on derived classes of PropertyMetadata are typically defined in the object model as read-write. This is so they can be adjusted after initialization of the instance. However, after the metadata is consumed as part of a call to Register, AddOwner, or OverrideMetadata, the property system will seal that metadata instance and properties that convey the specifics of the metadata are now considered immutable. Attempting to set this property after IsSealed is true on this metadata instance will raise an exception.

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 Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0

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