Saving application preferences in Windows Phone - Revision history

Hamishwillee: Text replace - "[[Category:Silverlight" to "[[Category:XAML"

2013-04-10T01:29:02Z

Text replace - "[[Category:Silverlight" to "[[Category:XAML"

Hamishwillee: Hamishwillee - Add SeeAlso

2012-12-07T03:46:13Z

Hamishwillee - Add SeeAlso

Hamishwillee: Hamishwillee - Addition to article of: Category:Windows Phone 7.5

2012-11-30T05:39:42Z

Hamishwillee - Addition to article of: Category:Windows Phone 7.5

Hamishwillee: Hamishwillee - Fix categories

2012-07-24T05:18:30Z

Hamishwillee - Fix categories

Hamishwillee: Hamishwillee - Add Essential Idioms category

2012-04-26T06:46:34Z

Hamishwillee - Add Essential Idioms category

Hamishwillee: Hamishwillee - Fix wiki text/subedit. Fix categories

2012-04-26T06:46:12Z

Hamishwillee - Fix wiki text/subedit. Fix categories

Hamishwillee: Hamishwillee - Bot update - Fix metadata etc

2012-04-24T00:28:54Z

Hamishwillee - Bot update - Fix metadata etc

Croozeus: Croozeus - /* Sample application */

2012-02-06T06:49:45Z

Croozeus - - Sample application

Chintandave er: Chintandave er - added Icode templates

2012-01-31T09:00:31Z

Chintandave er - added Icode templates

Chintandave er: Chintandave er - /* Sample application */

2012-01-31T08:53:46Z

Chintandave er - - Sample application

@@ Line 1: / Line 1: @@
-[[Category:Windows Phone]][[Category:Silverlight]][[Category:Code Snippet]][[Category:Files/Data]][[Category:Application Framework]][[Category:Windows Phone 7.5]]
+[[Category:Windows Phone]][[Category:XAML]][[Category:Code Snippet]][[Category:Files/Data]][[Category:Application Framework]][[Category:Windows Phone 7.5]]
 {{Abstract|This article explains how to save and load application preferences using [http://msdn.microsoft.com/en-us/library/system.io.isolatedstorage.isolatedstoragesettings(v&#61;vs.95).aspx IsolatedStorageSettings] on Windows Phone 7.5. }}
 {{SeeAlso|

@@ Line 1: / Line 1: @@
-[[Category:Windows Phone]][[Category:Silverlight]][[Category:Code Snippet]][[Category:Files/Data]][[Category:Application Framework]]
+[[Category:Windows Phone]][[Category:Silverlight]][[Category:Code Snippet]][[Category:Files/Data]][[Category:Application Framework]][[Category:Windows Phone 7.5]]
 {{Abstract|This article explains how to save and load application preferences using [http://msdn.microsoft.com/en-us/library/system.io.isolatedstorage.isolatedstoragesettings(v&#61;vs.95).aspx IsolatedStorageSettings] on Windows Phone 7.5. }}
-{{SeeAlso|[http://msdn.microsoft.com/en-us/library/cc221360(v&#61;vs.95).aspx How to: Store and Retrieve Application Settings Using Isolated Storage] (MSDN)}}
+{{SeeAlso|
 {{ArticleMetaData <!-- v1.2 -->
 |sourcecode= <!-- Link to example source code e.g. [[Media:The Code Example ZIP.zip]] -->
@@ Line 143: / Line 147: @@
 == Further reading ==
 # [http://msdn.microsoft.com/en-us/library/cc221360(v=vs.95).aspx How to: Store and Retrieve Application Settings Using Isolated Storage]
-# [http://msdn.microsoft.com/en-us/library/system.io.isolatedstorage.isolatedstoragesettings(v=vs.95).aspx IsolatedStorageSettings class][[Category:Windows Phone 7.5]]
+# [http://msdn.microsoft.com/en-us/library/system.io.isolatedstorage.isolatedstoragesettings(v=vs.95).aspx IsolatedStorageSettings class]

@@ Line 143: / Line 143: @@
 == Further reading ==
 # [http://msdn.microsoft.com/en-us/library/cc221360(v=vs.95).aspx How to: Store and Retrieve Application Settings Using Isolated Storage]
-# [http://msdn.microsoft.com/en-us/library/system.io.isolatedstorage.isolatedstoragesettings(v=vs.95).aspx IsolatedStorageSettings class]
+# [http://msdn.microsoft.com/en-us/library/system.io.isolatedstorage.isolatedstoragesettings(v=vs.95).aspx IsolatedStorageSettings class][[Category:Windows Phone 7.5]]

@@ Line 1: / Line 1: @@
-[[Category:Windows Phone]][[Category:Silverlight]][[Category:Code Snippet]][[Category:Files/Data]][[Category:Essential Idioms]]
+[[Category:Windows Phone]][[Category:Silverlight]][[Category:Code Snippet]][[Category:Files/Data]][[Category:Application Framework]]
 {{Abstract|This article explains how to save and load application preferences using [http://msdn.microsoft.com/en-us/library/system.io.isolatedstorage.isolatedstoragesettings(v&#61;vs.95).aspx IsolatedStorageSettings] on Windows Phone 7.5. }}
 {{SeeAlso|[http://msdn.microsoft.com/en-us/library/cc221360(v&#61;vs.95).aspx How to: Store and Retrieve Application Settings Using Isolated Storage] (MSDN)}}

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-[[Category:Windows Phone]][[Category:Silverlight]][[Category:Code Snippet]][[Category:Files/Data]]
+[[Category:Windows Phone]][[Category:Silverlight]][[Category:Code Snippet]][[Category:Files/Data]][[Category:Essential Idioms]]
 {{Abstract|This article explains how to save and load application preferences using [http://msdn.microsoft.com/en-us/library/system.io.isolatedstorage.isolatedstoragesettings(v&#61;vs.95).aspx IsolatedStorageSettings] on Windows Phone 7.5. }}
 {{SeeAlso|[http://msdn.microsoft.com/en-us/library/cc221360(v&#61;vs.95).aspx How to: Store and Retrieve Application Settings Using Isolated Storage] (MSDN)}}

@@ Line 1: / Line 1: @@
-[[Category:Windows Phone]][[Category:Silverlight]][[Category:Code Snippet]]
+[[Category:Windows Phone]][[Category:Silverlight]][[Category:Code Snippet]][[Category:Files/Data]]
-{{Abstract|This article explains how to save and load application preferences on Windows Phone 7 devices. }}
+{{Abstract|This article explains how to save and load application preferences using [http://msdn.microsoft.com/en-us/library/system.io.isolatedstorage.isolatedstoragesettings(v&#61;vs.95).aspx IsolatedStorageSettings] on Windows Phone 7.5. }}
 {{ArticleMetaData <!-- v1.2 -->
 |sourcecode= <!-- Link to example source code e.g. [[Media:The Code Example ZIP.zip]] -->
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 |devices= Nokia Lumia 800
 |sdk= <!-- SDK(s) built and tested against (e.g. [http://linktosdkdownload/ Qt SDK 1.1.4]) -->
-|platform= <!-- Compatible platforms - e.g. Symbian^1 and later, Qt 4.6 and later -->
+|platform= Windows Phone 7.5
 |devicecompatability= <!-- Compatible devices e.g.: All* (must have internal GPS) -->
 |dependencies= <!-- Any other/external dependencies e.g.: Google Maps Api v1.0 -->
@@ Line 25: / Line 26: @@
 == Introduction ==
-In most applications, saving user preferences is a common task. Common scenarios can be - Saving user's country in applications like Groupon, saving and loading top scores in games, saving user's preferences for sounds in a game.
+Saving user preferences is a common task requirement for applications. Common scenarios include saving the user's country, top scores in games, game sounds, login ids etc.
-This articles discusses the procedure to save and load such user preferences.
-== Class ==
+This articles discusses the procedure to save and load such user preferences using [http://msdn.microsoft.com/en-us/library/system.io.isolatedstorage.isolatedstoragesettings(v=vs.95).aspx IsolatedStorageSettings] class. It provides a dictionary-like, key-value store which is preserved across device reboots. The settings are securely stored inside the Isolated Storage space of an application, and are inaccessible to other applications.
-The class [http://msdn.microsoft.com/en-us/library/system.io.isolatedstorage.isolatedstoragesettings(v=vs.95).aspx IsolatedStorageSettings] comes to our rescue to save and load these preferences. The class helps you store dictionary-like, key-value store. IsolatedStorageSettings are preserved across device reboots. The settings are stored inside the Isolated Storage space of an application, hence inaccessible to other applications. Hence, we can claim they are secure.
 == Sample application ==
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          </Grid>
      </Grid>
 </phone:PhoneApplicationPage>

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 [[Category:Windows Phone]][[Category:Silverlight]][[Category:Code Snippet]]
 {{Abstract|This article explains how to save and load application preferences on Windows Phone 7 devices. }}
-{{ArticleMetaData <!-- v1.1 -->
+{{ArticleMetaData <!-- v1.2 -->
 |sourcecode= <!-- Link to example source code e.g. [[Media:The Code Example ZIP.zip]] -->
 |installfile= <!-- Link to installation file (e.g. [[Media:The Installation File.sis]]) -->
@@ Line 8: / Line 8: @@
 |platform= <!-- Compatible platforms - e.g. Symbian^1 and later, Qt 4.6 and later -->
 |devicecompatability= <!-- Compatible devices e.g.: All* (must have internal GPS) -->
 |dependencies= <!-- Any other/external dependencies e.g.: Google Maps Api v1.0 -->
-|signing=<!-- Signing requirements - empty or one of: Self-Signed, DevCert, Manufacturer -->
+|signing= <!-- Signing requirements - empty or one of: Self-Signed, DevCert, Manufacturer -->
 |capabilities= <!-- Capabilities required by the article/code example (e.g. Location, NetworkServices. -->
 |keywords= IsolatedStorageSettings
 |language= <!-- Language category code for non-English topics - e.g. Lang-Chinese -->
 |translated-by= <!-- [[User:XXXX]] -->
 |translated-from-title= <!-- Title only -->
 |translated-from-id= <!-- Id of translated revision -->
-|review-by=<!-- After re-review: [[User:username]] -->
+|review-by= <!-- After re-review: [[User:username]] -->
 |review-timestamp= <!-- After re-review: YYYYMMDD -->
 |update-by= <!-- After significant update: [[User:username]]-->

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 Since Game Music and Timed Mode essentially hold boolean values, in the UI of application we use ToggleSwitch. ToggleSwitch does not come along with the Windows Phone SDK and has to be downloaded separately from codeplex and installed. This has been described [http://www.codebadger.com/blog/post/2010/10/28/WP7-Development-Tip-of-the-Day-Silverlight-Toolkit-for-Windows-Phone.aspx here]. This is rich resource for Windows Phone controls. Lets create the user interface for the settings page in XAML.
-<code csharp>
+<code xml>
 <phone:PhoneApplicationPage
      x:Class="Pref.MainPage"

@@ Line 100: / Line 100: @@
 == Code Behind ==
-Instead of having a save and load button on the UI, it is more intuitive to simply load and save preferences when the user navigates TO and FROM the page. Hence in the MainPage.xaml.cs Class, we override the OnNavigatedTo() and OnNavigatedFrom() methods.
+Instead of having a save and load button on the UI, it is more intuitive to simply load and save preferences when the user navigates TO and FROM the page. Hence in the MainPage.xaml.cs Class, we override the {{Icode|OnNavigatedTo()}} and {{Icode|OnNavigatedFrom()}} methods.
 <code csharp>
@@ Line 150: / Line 150: @@
 </code>
-So as you can observe, I am accessing the values in the IsolatedStorageSettings in the form of Key Value pairs. Remember to cast the values when retrieving or saving to this file. It is also reminded that Save() method needs to be called to store or flush these values. If a key is non-existent in the IsolatedStorageSettings, then it may raise KeyNotFoundException.
+So as you can observe, I am accessing the values in the  {{Icode|IsolatedStorageSettings}} in the form of Key Value pairs. Remember to cast the values when retrieving or saving to this file. It is also reminded that {{Icode|Save()}} method needs to be called to store or flush these values. If a key is non-existent in the {{Icode|IsolatedStorageSettings}}, then it may raise {{Icode|KeyNotFoundException}}.
 == Summary ==
 This article describes one of the fundamental tasks in application development - saving and loading user preferences. This is can be extended to many minimal storage use-cases such as top scores in games.

← Older revision		Revision as of 08:53, 31 January 2012
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−	~~This~~ gives us an interface like this.	+	Above code gives us an UI interface like this.

	[[File:One.png\|300px\|Application UI]]		[[File:One.png\|300px\|Application UI]]