PropertyChangingEventHandler Delegate
AlternateContentPropertyAttribute Class
AsyncCompletedEventArgs Class
AsyncCompletedEventHandler Delegate
AsyncOperation Class
AsyncOperationManager Class
BackgroundWorker Class
BrowsableAttribute Class
CancelEventArgs Class
CategoryAttribute Class
ComponentCollection Class
CurrentChangingEventArgs Class
CurrentChangingEventHandler Delegate
DataErrorsChangedEventArgs Class
DefaultValueAttribute Class
DescriptionAttribute Class
DesignerProperties Class
DoWorkEventArgs Class
DoWorkEventHandler Delegate
EditorBrowsableAttribute Class
EditorBrowsableState Enumeration
GroupDescription Class
IChangeTracking Interface
ICollectionView Interface
ICollectionViewFactory Interface
IComponent Interface
IContainer Interface
IDataErrorInfo Interface
IEditableCollectionView Interface
IEditableObject Interface
INotifyDataErrorInfo Interface
INotifyPropertyChanged Interface
INotifyPropertyChanging Interface
IRevertibleChangeTracking Interface
ISite Interface
ISupportInitialize Interface
ITypeDescriptorContext Interface
ListSortDirection Enumeration
NewItemPlaceholderPosition Enumeration
ProgressChangedEventArgs Class
ProgressChangedEventHandler Delegate
PropertyChangedEventArgs Class
PropertyChangedEventHandler Delegate
PropertyChangingEventArgs Class
PropertyChangingEventHandler Delegate
PropertyDescriptor Class
ReadOnlyAttribute Class
RunWorkerCompletedEventArgs Class
RunWorkerCompletedEventHandler Delegate
SortDescription Structure
SortDescriptionCollection Class
TypeConverter Class
TypeConverterAttribute Class
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PropertyChangingEventHandler Delegate

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Represents a method that will handle the INotifyPropertyChanging::PropertyChanging event.

Namespace:  System.ComponentModel
Assembly:  System (in System.dll)

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Parameters

sender
Type: System::Object
The source of the event.
e
Type: System.ComponentModel::PropertyChangingEventArgs
The event data.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1

Windows Phone

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