Checks whether the setting exists in the settings group, and retrieves its value (if it exists). If it does not exist, the default value is returned instead.

Fires the PropertyChanged event with the propertyName used as the event argument. This needs to be called from the setter of every property when using binding (for example, in Silverlight/WPF UIs).

Loads settings from settings bundle

Resets all settings to defaults

Saves settings to settings bundle

Checks whether the setting exists in the settings group. If the setting does exist, then it is updated with the new value; if it does not exist, a new setting is created, but only if the value is not the same as the default value (in which case the call is effectively ignored).