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PersonalizationAdministration.ResetUserState Method (String, String[])

Resets per-user state in the underlying data store for the page and users specified.

Namespace:  System.Web.UI.WebControls.WebParts
Assembly:  System.Web (in System.Web.dll)

public static int ResetUserState(
	string path,
	string[] usernames


Type: System.String
The path to the page associated with the personalization state information to be reset.
Type: System.String[]
The user names associated with the personalization data to be reset.

Return Value

Type: System.Int32
The number of rows that were reset.


path or usernames is null.


path is an empty string ("") after trimming.

- or -

A member of usernames is null, an empty string after trimming, or contains commas.

- or -

usernames is a zero-length array.

- or -

The provider for a personalization provider defined in configuration is not of the correct type.

- or -

The length of the string of any parameter is greater than 256 characters.


A configuration exception occurred while attempting to create and initialize an instance of one of the configured personalization providers.

- or -

The default personalization provider defined in configuration could not be found.


The default provider indicated that the number of deleted rows was a negative number.

This method resets per-user state in the underlying data store associated with each user contained in the usernames parameter for the page specified by path.

It is not an error to attempt to reset nonexistent user state.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

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.