Tizen.Applications/nThe event context of respective key.<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<h5 id=\"content-examples-3\"><a href=https://samsungtizenos.com/"#content-examples-3\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Examples<\/h5>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code><span class=\"line\"><span style=\"color:#D73A49;--shiki-dark:#F97583\">private<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">static<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">void<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">Preference_PreferenceChanged<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">object<\/span><span style=\"color:#D73A49;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#79B8FF\">sender<\/span><span style=\"color:#D73A49;--shiki-dark:#E1E4E8\">, <\/span><span style=\"color:#D73A49;--shiki-dark:#79B8FF\">PreferenceChangedEventArgs<\/span><span style=\"color:#D73A49;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#79B8FF\">e<\/span><span style=\"color:#D73A49;--shiki-dark:#E1E4E8\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Console<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">WriteLine<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#032F62;--shiki-dark:#9ECBFF\">"key {0}"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">, <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">e<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Key<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Preference<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">EventContext<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">context<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">=<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">null<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Preference<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">GetEventContext<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#032F62;--shiki-dark:#9ECBFF\">"active_user"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">)<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">TryGetTarget<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">out<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">context<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color:#D73A49;--shiki-dark:#F97583\">if<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">context<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">!=<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">null<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">context<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Changed<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">+=<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Preference_PreferenceChanged<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Preference<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">Set<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#032F62;--shiki-dark:#9ECBFF\">"active_user"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">, <\/span><span style=\"color:#032F62;--shiki-dark:#9ECBFF\">"Poe"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">);<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Preference<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">GetEventContext<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#032F62;--shiki-dark:#9ECBFF\">"active_user"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">)<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">TryGetTarget<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">out<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">context<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color:#D73A49;--shiki-dark:#F97583\">if<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> (<\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">context<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">!=<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">null<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">context<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Changed<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">-=<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Preference_PreferenceChanged<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">}<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre>\n<h5 id=\"content-exceptions-2\"><a href=https://samsungtizenos.com/"#content-exceptions-2\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Exceptions<\/h5>\n<div class=\"overflow-auto grid table-fixed\" data-table-container=\"data-table-container\"><table>\n<thead>\n<tr>\n<th>Type<\/th>\n<th>Condition<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>System.Collections.Generic.KeyNotFoundException<\/td>\n<td>Thrown if the key is not found.<\/td>\n<\/tr>\n<tr>\n<td>System.ArgumentException<\/td>\n<td>Thrown if the key is invalid parameter.<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<h5 id=\"content-see-also\"><a href=https://samsungtizenos.com/"#content-see-also\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>See Also<\/h5>\n<p><a href=https://samsungtizenos.com/"Tizen.Applications.Preference.md/">Preference.EventContext/n
Assembly:/n: Tizen.Applications.Preference.dll<\/p>\n<p>The Preference class provides methods to store and retrieve application specific data\/preferences. Preferences are stored in the form of key-value pairs.\nKey names must be text strings while values can be integers, doubles, strings, or booleans.<\/p>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code><span class=\"line\"><span style=\"color:#D73A49;--shiki-dark:#F97583\">public<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">static<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">class<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">Preference<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre>\n<p>Inheritance\n: object<\/p>\n<p>Preference<\/p>\n<h2 id=\"content-properties\"><a href=https://samsungtizenos.com/"#content-properties\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Properties<\/h2>\n<p><a href=https://samsungtizenos.com/"https:////github.com//Samsung//TizenFX//blob//main//src//Tizen.Applications.Preference//Tizen.Applications//Preference.cs//#L68\">View Source<\/a><\/p>\n<h4 id=\"content-keys\"><a href=https://samsungtizenos.com/"#content-keys\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Keys<\/h4>\n<p>Retrieves all keys of the application preferences.<\/p>\n<h5 id=\"content-declaration\"><a href=https://samsungtizenos.com/"#content-declaration\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Declaration<\/h5>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code><span class=\"line\"><span style=\"color:#D73A49;--shiki-dark:#F97583\">public<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">static<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">IEnumerable<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\"><string><\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Keys<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> { <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">get<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">; }<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre>\n<h5 id=\"content-property-value\"><a href=https://samsungtizenos.com/"#content-property-value\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Property Value<\/h5>\n<div class=\"overflow-auto grid table-fixed\" data-table-container=\"data-table-container\"><table>\n<thead>\n<tr>\n<th>Type<\/th>\n<th>Description<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>System.Collections.Generic.IEnumerable<T><string><\/td>\n<td>The list of keys.<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<h5 id=\"content-examples\"><a href=https://samsungtizenos.com/"#content-examples\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Examples<\/h5>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code><span class=\"line\"><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Preference<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">Set<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#24292E;--shiki-dark:#9ECBFF\">"Option_enabled"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">, <\/span><span style=\"color:#24292E;--shiki-dark:#79B8FF\">true<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Preference<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">Set<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#032F62;--shiki-dark:#9ECBFF\">"active_user"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">, <\/span><span style=\"color:#032F62;--shiki-dark:#9ECBFF\">"Joe"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Preference<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">Set<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#032F62;--shiki-dark:#9ECBFF\">"default_volume"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">, <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">10<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Preference<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">Set<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#032F62;--shiki-dark:#9ECBFF\">"brightness"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">, <\/span><span style=\"color:#032F62;--shiki-dark:#9ECBFF\">"0.6"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color:#D73A49;--shiki-dark:#F97583\">foreach<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">string<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">key<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">in<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Preference<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Keys<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Console<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">WriteLine<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#032F62;--shiki-dark:#9ECBFF\">"key {0}"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">, <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">key<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">}<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre>\n<h2 id=\"content-methods\"><a href=https://samsungtizenos.com/"#content-methods\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Methods<\/h2>\n<p><a href=https://samsungtizenos.com/"https:////github.com//Samsung//TizenFX//blob//main//src//Tizen.Applications.Preference//Tizen.Applications//Preference.cs//#L154\">View Source<\/a><\/p>\n<h4 id=\"content-containsstring\"><a href=https://samsungtizenos.com/"#content-containsstring\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Contains(string)<\/h4>\n<p>Checks whether the given key exists in the preference.<\/p>\n<h5 id=\"content-declaration-1\"><a href=https://samsungtizenos.com/"#content-declaration-1\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Declaration<\/h5>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code><span class=\"line\"><span style=\"color:#D73A49;--shiki-dark:#F97583\">public<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">static<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">bool<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">Contains<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">string<\/span><span style=\"color:#D73A49;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#79B8FF\">key<\/span><span style=\"color:#D73A49;--shiki-dark:#E1E4E8\">)<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre>\n<h5 id=\"content-parameters\"><a href=https://samsungtizenos.com/"#content-parameters\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Parameters<\/h5>\n<div class=\"overflow-auto grid table-fixed\" data-table-container=\"data-table-container\"><table>\n<thead>\n<tr>\n<th>Type<\/th>\n<th>Name<\/th>\n<th>Description<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>string<\/td>\n<td>key<\/td>\n<td>The name of the key to check.<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<h5 id=\"content-returns\"><a href=https://samsungtizenos.com/"#content-returns\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Returns<\/h5>\n<div class=\"overflow-auto grid table-fixed\" data-table-container=\"data-table-container\"><table>\n<thead>\n<tr>\n<th>Type<\/th>\n<th>Description<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>bool<\/td>\n<td>True if the key exists in the preference, otherwise false.<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<h5 id=\"content-remarks\"><a href=https://samsungtizenos.com/"#content-remarks\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Remarks<\/h5>\n<p>This method checks if the specified key exists in the preferences. It returns true if the key exists, and false if not. The key argument should be a valid parameter. An ArgumentException will be thrown if the key is invalid. Additionally, an IOException may be thrown if the method fails due to an internal input\/output error.<\/p>\n<h5 id=\"content-examples-1\"><a href=https://samsungtizenos.com/"#content-examples-1\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Examples<\/h5>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code><span class=\"line\"><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Preference<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">Set<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#24292E;--shiki-dark:#9ECBFF\">"active_user"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">, <\/span><span style=\"color:#24292E;--shiki-dark:#9ECBFF\">"Joe"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color:#D73A49;--shiki-dark:#F97583\">bool<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">exists<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">=<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Preference<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">Contains<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#032F62;--shiki-dark:#9ECBFF\">"active_user"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color:#D73A49;--shiki-dark:#F97583\">if<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> (<\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">exists<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color:#D73A49;--shiki-dark:#F97583\">string<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">value<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">=<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Preference<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Get<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\"><<\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">istring<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">><\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#032F62;--shiki-dark:#9ECBFF\">"active_user"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Console<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">WriteLine<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#032F62;--shiki-dark:#9ECBFF\">"user {0}"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">, <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">value<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">}<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre>\n<h5 id=\"content-exceptions\"><a href=https://samsungtizenos.com/"#content-exceptions\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Exceptions<\/h5>\n<div class=\"overflow-auto grid table-fixed\" data-table-container=\"data-table-container\"><table>\n<thead>\n<tr>\n<th>Type<\/th>\n<th>Condition<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>System.ArgumentException<\/td>\n<td>Thrown if the key is an invalid parameter.<\/td>\n<\/tr>\n<tr>\n<td>System.IO.IOException<\/td>\n<td>Thrown when the method failed due to an internal I\/O error.<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<p><a href=https://samsungtizenos.com/"https:////github.com//Samsung//TizenFX//blob//main//src//Tizen.Applications.Preference//Tizen.Applications//Preference.cs//#L240\">View Source<\/a><\/p>\n<h4 id=\"content-gettstring\"><a href=https://samsungtizenos.com/"#content-gettstring\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Get<T>(string)<\/h4>\n<p>Gets the value of a preference item with the specified key.\nNote that this is a generic method.<\/p>\n<h5 id=\"content-declaration-2\"><a href=https://samsungtizenos.com/"#content-declaration-2\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Declaration<\/h5>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code><span class=\"line\"><span style=\"color:#D73A49;--shiki-dark:#F97583\">public<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">static<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">T<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Get<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\"><<\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">T<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">><\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">string<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">key<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">)<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre>\n<h5 id=\"content-parameters-1\"><a href=https://samsungtizenos.com/"#content-parameters-1\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Parameters<\/h5>\n<div class=\"overflow-auto grid table-fixed\" data-table-container=\"data-table-container\"><table>\n<thead>\n<tr>\n<th>Type<\/th>\n<th>Name<\/th>\n<th>Description<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>string<\/td>\n<td>key<\/td>\n<td>The key of the preference.<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<h5 id=\"content-returns-1\"><a href=https://samsungtizenos.com/"#content-returns-1\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Returns<\/h5>\n<div class=\"overflow-auto grid table-fixed\" data-table-container=\"data-table-container\"><table>\n<thead>\n<tr>\n<th>Type<\/th>\n<th>Description<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>T<\/td>\n<td>The value of the preference item if it is of the specified generic type.<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<h5 id=\"content-type-parameters\"><a href=https://samsungtizenos.com/"#content-type-parameters\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Type Parameters<\/h5>\n<div class=\"overflow-auto grid table-fixed\" data-table-container=\"data-table-container\"><table>\n<thead>\n<tr>\n<th>Name<\/th>\n<th>Description<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>T<\/td>\n<td>The generic type to return.<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<h5 id=\"content-examples-2\"><a href=https://samsungtizenos.com/"#content-examples-2\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Examples<\/h5>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code><span class=\"line\"><span style=\"color:#D73A49;--shiki-dark:#F97583\">bool<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">exists<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">=<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Preference<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">Contains<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#24292E;--shiki-dark:#9ECBFF\">"active_user"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color:#D73A49;--shiki-dark:#F97583\">if<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> (<\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">exists<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color:#D73A49;--shiki-dark:#F97583\">string<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">value<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">=<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Preference<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Get<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\"><string><\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#032F62;--shiki-dark:#9ECBFF\">"active_user"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Console<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">WriteLine<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#032F62;--shiki-dark:#9ECBFF\">"user {0}"<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">, <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">value<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">}<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre>\n<h5 id=\"content-exceptions-1\"><a href=https://samsungtizenos.com/"#content-exceptions-1\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Exceptions<\/h5>\n<div class=\"overflow-auto grid table-fixed\" data-table-container=\"data-table-container\"><table>\n<thead>\n<tr>\n<th>Type<\/th>\n<th>Condition<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>System.Collections.Generic.KeyNotFoundException<\/td>\n<td>Thrown if the key is not found.<\/td>\n<\/tr>\n<tr>\n<td>System.ArgumentException<\/td>\n<td>Thrown if the key is an invalid parameter.<\/td>\n<\/tr>\n<tr>\n<td>System.IO.IOException<\/td>\n<td>Thrown when the method failed due to an internal I\/O error.<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<p><a href=https://samsungtizenos.com/"https:////github.com//Samsung//TizenFX//blob//main//src//Tizen.Applications.Preference//Tizen.Applications//Preference.cs//#L115\">View Source<\/a><\/p>\n<h4 id=\"content-geteventcontextstring\"><a href=https://samsungtizenos.com/"#content-geteventcontextstring\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>GetEventContext(string)<\/h4>\n<p>Gets the event context for the given key.<\/p>\n<h5 id=\"content-declaration-3\"><a href=https://samsungtizenos.com/"#content-declaration-3\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Declaration<\/h5>\n<pre class=\"shiki shiki-themes github-light github-dark\" style=\"background-color:#fff;--shiki-dark-bg:#24292e;color:#24292e;--shiki-dark:#e1e4e8;\"><code><span class=\"line\"><span style=\"color:#D73A49;--shiki-dark:#F97583\">public<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">static<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">WeakReference<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\"><<\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">Preference<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">.<\/span><span style=\"color:#005CC5;--shiki-dark:#79B8FF\">EventContext<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">><\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#6F42C1;--shiki-dark:#B392F0\">GetEventContext<\/span><span style=\"color:#24292E;--shiki-dark:#E1E4E8\">(<\/span><span style=\"color:#D73A49;--shiki-dark:#F97583\">string<\/span><span style=\"color:#D73A49;--shiki-dark:#E1E4E8\"> <\/span><span style=\"color:#D73A49;--shiki-dark:#79B8FF\">key<\/span><span style=\"color:#D73A49;--shiki-dark:#E1E4E8\">)<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre>\n<h5 id=\"content-parameters-2\"><a href=https://samsungtizenos.com/"#content-parameters-2\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Parameters<\/h5>\n<div class=\"overflow-auto grid table-fixed\" data-table-container=\"data-table-container\"><table>\n<thead>\n<tr>\n<th>Type<\/th>\n<th>Name<\/th>\n<th>Description<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>string<\/td>\n<td>key<\/td>\n<td>The preference key.<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<h5 id=\"content-returns-2\"><a href=https://samsungtizenos.com/"#content-returns-2\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">\u00b6<\/a>Returns<\/h5>\n<div class=\"overflow-auto grid table-fixed\" data-table-container=\"data-table-container\"><table>\n<thead>\n<tr>\n<th>Type<\/th>\n<th>Description<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>System.WeakReference<T><<a href=https://samsungtizenos.com/"Tizen.Applications.Preference.md/">Preference.EventContext>/n
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