ApplicationSettingsBase.Upgrade Method

Updates application settings to reflect a more recent installation of the application.

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

public virtual void Upgrade()

ExceptionCondition
ConfigurationErrorsException

The configuration file could not be parsed.

The Upgrade method performs two actions to assure smooth transition to a new version of an application:

You can override the default behavior of Upgrade to implement custom upgrading or merging behavior. Use the GetPreviousVersion method to retrieve individual values for a setting for the previous version of the application. Examples of custom upgrade behavior include:

  • Using new policy defaults that override one or more of the previous user-specified values or previous defaults.

  • Special translation of old values to be compatible with newer ranges, a different settings property group, and so on.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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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