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EntityObject.ReportPropertyChanging Method

Notifies the change tracker that a property change is pending.

Namespace:  System.Data.Objects.DataClasses
Assembly:  System.Data.Entity (in System.Data.Entity.dll)
'Declaration
Protected Overrides NotOverridable Sub ReportPropertyChanging ( _
	property As String _
)

Parameters

property
Type: System.String

The name of the changing property.

ExceptionCondition
ArgumentNullException

property is Nothing.

When an entity type is generated by the Entity Data Model tools, the ReportPropertyChanging method is called before a property change to cache the current value of the property in the IEntityChangeTracker so that this value can be used as the original value for the property.

This method calls the EntityMemberChanging method in the change tracker.

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5 SP1

.NET Framework Client Profile

Supported in: 4

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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