Syntax
| Visual Basic (Declaration) | |
|---|---|
Public Event PropertyChanging As EventHandler(Of PropertyChangedEventArgs) | |
| Visual Basic (Usage) |  Copy Code |
|---|---|
Dim instance As PersistableObject Dim handler As EventHandler(Of PropertyChangedEventArgs) AddHandler instance.PropertyChanging, handler | |
| C# | |
|---|---|
public event EventHandler<PropertyChangedEventArgs> PropertyChanging | |
| C++/CLI | |
|---|---|
public: event EventHandler<PropertyChangedEventArgs^>^ PropertyChanging | |
Event Data
The event handler receives an argument of type PropertyChangedEventArgs containing data related to this event. The following PropertyChangedEventArgs properties provide information specific to this event.
| Property | Description |
|---|---|
| IsDisposed | Gets a value indicating if the current object have been disposed yet. |
| IsReference | |
| Item | |
| NewValue | |
| OldValue | |
| PropertyName | |
| warnUser |
Requirements
Target Platforms: 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