Class Preference.EventContext

Definition

Namespace:

Tizen.Applications

Assembly:

Tizen.Applications.Preference.dll

The class manages event handlers of the preference keys. The class enables having event handlers for individual preference keys.

public class Preference.EventContext

Inheritance

object

Preference.EventContext

Events

Changed

Occurs whenever there is a change in the value of a preference key.

Declaration

public event EventHandler<PreferenceChangedEventArgs> Changed

Event Type

Type	Description
System.EventHandler<TEventArgs><PreferenceChangedEventArgs>

Examples

    private static void Preference_PreferenceChanged(object sender, PreferenceChangedEventArgs e)
    {
        Console.WriteLine("key {0}", e.Key);
    }
    Preference.EventContext context = null;
    Preference.GetEventContext("active_user").TryGetTarget(out context);
    if(context != null)
    {
        context.Changed += Preference_PreferenceChanged;
    }

    Preference.Set("active_user", "Poe");

    Preference.GetEventContext("active_user").TryGetTarget(out context);
    if (context != null)
    {
        context.Changed -= Preference_PreferenceChanged;
    }

Exceptions

Type	Condition
System.ArgumentException	Thrown when the key does not exist or when there is an invalid parameter.
System.InvalidOperationException	Thrown when the bundle instance has been disposed.