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ApplicationSettingsBase.GetPreviousVersion Method

Returns the value of the named settings property for the previous version of the same application.

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

public Object GetPreviousVersion(
	string propertyName


Type: System.String
A String containing the name of the settings property whose value is to be returned.

Return Value

Type: System.Object
An Object containing the value of the specified SettingsProperty if found; otherwise, null.


The property does not exist. The property count is zero or the property cannot be found in the data store.

The GetPreviousVersion method is often used in conjunction with the Upgrade method when migrating application settings during the installation of a new version of an application.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.