Assembly: System (in system.dll)
The SettingChangingEventArgs class provides data for the SettingChanging event, which signals that the value of an application settings property is about to change. The most common source for this event is the get accessor of the Item method in the ApplicationSettingsBase class.
Because SettingChangingEventArgs is derived from CancelEventArgs, the handler has the option of canceling the write operation.
Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter EditionThe Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.