WindowsPhone8.1 Development Tips

1, call the system built-in filter:

Windows.ApplicationModel.CameraApplicationManager.ShowInstalledApplicationsUI ();

2. Completely exit the application:

Application.current. Exit ();

3. Launch System content application via URL:

Windows.System.Launcher.LaunchUriAsync (NewUri ("Ms-settings-lock:")); Jump to the Lock screen Settings page Windows.System.Launcher.LaunchUriAsync (NewUri ("Ms-settings-airplanemode:")); Jump to the Flight Settings page Windows.System.Launcher.LaunchUriAsync (NewUri ("Ms-settings-bluetooth:")); Jump to the Bluetooth Settings page Windows.System.Launcher.LaunchUriAsync (NewUri ("Ms-settings-cellular:")); Jump to the Network Settings page Windows.System.Launcher.LaunchUriAsync (NewUri ("Ms-settings-wifi:")); Jump to the WiFi Settings page Windows.System.Launcher.LaunchUriAsync (NewUri ("ms-settings-location:")); Jump to the Location Settings page Windows.System.Launcher.LaunchUriAsync (NewUri ("ms-settings-emailandaccounts:")); Jump to the Email + Account Settings page Windows.System.Launcher.LaunchUriAsync (NewUri ("ms-settings-screenrotation:")); Screen Rotation Windows.System.Launcher.LaunchUriAsync (NewUri ("callto:1391234567")); Call the specified phone number

Windows.System.Launcher.LaunchUriAsync (New Uri ("http://webabcd.cnblogs.com/"));  Open the specified network address

Windows.System.Launcher.LaunchUriAsync (New Uri ("Mailto:[email protected]"));   Send a message to the specified mailbox

4. Custom Delay Wait Operation:

  Task.Factory.StartNew (async () =  {       task.delay). Wait ();   Latency wait time interval        awaitthis. Dispatcher.runasync (Coredispatcherpriority.normal, () =       {             ///Here to add the required action function
       });  });

5. File read:

Windows.Storage.KnownFolders;//Includes access to the app's common location
Windows.ApplicationModel.Package.Current.InstalledLocation; //  Get the location of the installation package
Windows.Storage.ApplicationData.Current.LocalCacheFolder; Get Local cache Folder
 Windows.Storage.ApplicationData.Current.RoamingFolder; //Get the Roaming Data folder
 Windows.Storage.ApplicationData.Current.LocalFolder; //Get Local App folder
Windows.Storage.ApplicationData.Current.TemporaryFolder; Get the Application Temp folder

6. Hide and show the status bar:

Windows.UI.ViewManagement.StatusBar.GetForCurrentView (). Hideasync (); Windows.UI.ViewManagement.StatusBar.GetForCurrentView (). Showasync ();

7. Hide Command bar:

commandbar.visibility = Windows.UI.Xaml.Visibility.Collapsed;

8. URI scheme for installation package file:

"ms-appdata:///local/..."    //access to files stored in a local folder
"ms-appdata:///roaming/..."  //access to files stored in roaming folders
"ms-appdata:///temp/..."     //access to files stored in temp folder
"ms-appdata:///..."          //accessing files in the installation package folder

9. Rewrite the event corresponding to the back key:

Windows.Phone.UI.Input.HardwareButtons.BackPressed + = hardwarebuttons_backpressed;
void Hardwarebuttons_backpressed (object sender, Windows.Phone.UI.Input.BackPressedEventArgs e)
{
Add the corresponding event handling here
}

Note: Of course you can also use the delegate method to write the event, which is more refined:
Windows.Phone.UI.Input.HardwareButtons.BackPressed + = (A, b) =>{  ////Add corresponding event processing  };

10, contact related actions:

Windows.Phone.PersonalInformation.ContactStore.CreateOrOpenAsync ();  Create a contact

Contactinformation info = new Contactinformation ();
var porperties = info. Getpropertiesasync ();                     Get Contacts

^^ ^^ ^^ ^ Of course, there are many, then think again in turn!!!!

These are some of the commonly used operations I have listed for beginners, hoping to have some guidance for beginners. Of course, also very welcome reprint, but please specify the source!

WindowsPhone8.1 Development Tips