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//------------------------------------------------------------------------------
// <copyright file="IApplicationSettingsProvider.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Configuration {
using System.Security.Permissions;
/// <devdoc>
/// This interface is an extension to SettingsProvider that a provider can implement
/// to support additional functionality for settings classes that derive from ApplicationSettingsBase.
/// </devdoc>
public interface IApplicationSettingsProvider {
/// <devdoc>
/// Retrieves the previous value of a given SettingsProperty. This is used in conjunction with Upgrade.
/// </devdoc>
[PermissionSet(SecurityAction.LinkDemand, Name="FullTrust")]
SettingsPropertyValue GetPreviousVersion(SettingsContext context, SettingsProperty property);
/// <devdoc>
/// Resets all settings to their "default" values.
/// </devdoc>
[PermissionSet(SecurityAction.LinkDemand, Name="FullTrust")]
void Reset(SettingsContext context);
/// <devdoc>
/// Indicates to the provider that the app has been upgraded. This is a chance for the provider to upgrade
/// its stored settings as appropriate.
/// </devdoc>
[PermissionSet(SecurityAction.LinkDemand, Name="FullTrust")]
void Upgrade(SettingsContext context, SettingsPropertyCollection properties);
}
}
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