Occurs before the value of an application settings property is changed.
Assembly: System (in System.dll)
The event occurs before an application setting value property is changed through the Item method. This event is not raised when the Reload or Reset methods are called. can be canceled through the SettingChangingEventArgs event data class.
You typically use the event to handle immediate validation of an individual settings property. For more information about validation, see How to: Validate Application Settings.
There is no corresponding SettingChanged event for this class; instead, see the PropertyChanged event.
The following code example shows the event handler for object of type FormSettings, which is a wrapper class derived from ApplicationSettingsBase. The handler displays the event information in a textbox named tbStatus. The full code example is listed in the ApplicationSettingsBase class overview.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.