internal static void MigrateUserSettings(ApplicationSettingsBase settings)
{
if (settings is IMigrateSettings)
{
IMigrateSettings customMigrator = (IMigrateSettings)settings;
foreach (SettingsProperty property in settings.Properties)
{
if (!SettingsPropertyExtensions.IsUserScoped(property))
{
continue;
}
object previousValue = settings.GetPreviousVersion(property.Name);
//need to do this to force the values to load before accessing the PropertyValues in order to migrate,
//otherwise the SettingsPropertyValue will always be null.
var iForceSettingsPropertyValuesToLoad = settings[property.Name];
var currentValue = settings.PropertyValues[property.Name];
MigrateProperty(customMigrator, MigrationScope.User, currentValue, previousValue);
}
}
else
{
settings.Upgrade();
}
//Don't need to reload because the user settings will be current.
SaveIfDirty(settings);
}
private static void MigrateProperty(IMigrateSettings customMigrator, MigrationScope migrationScope,
SettingsPropertyValue currentValue, object previousValue)
{
var migrationValues = new SettingsPropertyMigrationValues(
currentValue.Property.Name, migrationScope,
currentValue.PropertyValue, previousValue);
customMigrator.MigrateSettingsProperty(migrationValues);
if (!Equals(migrationValues.CurrentValue, currentValue.PropertyValue))
currentValue.PropertyValue = migrationValues.CurrentValue;
}
private static void MigrateProperty(IMigrateSettings customMigrator, MigrationScope migrationScope,
SettingsPropertyValue currentValue, object previousValue)
{
var migrationValues = new SettingsPropertyMigrationValues(
currentValue.Property.Name, migrationScope,
currentValue.PropertyValue, previousValue);
customMigrator.MigrateSettingsProperty(migrationValues);
if (!Equals(migrationValues.CurrentValue, currentValue.PropertyValue))
{
currentValue.PropertyValue = migrationValues.CurrentValue;
}
}
internal static void MigrateSharedSettings(ApplicationSettingsBase settings, string previousExeConfigFilename)
{
if (settings is IMigrateSettings)
{
IMigrateSettings customMigrator = (IMigrateSettings)settings;
foreach (SettingsProvider settingsProvider in settings.Providers)
{
ISharedApplicationSettingsProvider sharedSettingsProvider = GetSharedSettingsProvider(settingsProvider);
if (sharedSettingsProvider == null || !sharedSettingsProvider.CanUpgradeSharedPropertyValues(settings.Context))
{
continue;
}
var properties = GetPropertiesForProvider(settings, settingsProvider);
var previousValues = sharedSettingsProvider.GetPreviousSharedPropertyValues(settings.Context,
properties, previousExeConfigFilename);
if (previousValues == null || previousValues.Count == 0)
{
continue;
}
var currentValues = sharedSettingsProvider.GetSharedPropertyValues(settings.Context, properties);
foreach (SettingsPropertyValue previousValue in previousValues)
{
SettingsPropertyValue currentValue = currentValues[previousValue.Name];
if (currentValue == null)
{
continue;
}
MigrateProperty(customMigrator, MigrationScope.Shared, currentValue, previousValue.PropertyValue);
}
foreach (SettingsPropertyValue property in currentValues)
{
if (!property.IsDirty)
{
continue;
}
sharedSettingsProvider.SetSharedPropertyValues(settings.Context, currentValues);
break;
}
}
}
else
{
foreach (SettingsProvider settingsProvider in settings.Providers)
{
ISharedApplicationSettingsProvider sharedSettingsProvider = GetSharedSettingsProvider(settingsProvider);
if (sharedSettingsProvider == null)
{
continue;
}
var properties = GetPropertiesForProvider(settings, settingsProvider);
sharedSettingsProvider.UpgradeSharedPropertyValues(settings.Context, properties, previousExeConfigFilename);
}
}
SaveIfDirty(settings);
//Need to call Reload because changes to shared settings aren't automatically realized by the .NET settings framework.
settings.Reload();
}
