How to use the save phone number task for Windows Phone 8
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Use the save phone number task to enable a user to save a phone number from your application. This task launches the Contacts application.
By using Choosers, you help provide a consistent user experience throughout the Windows Phone platform. For more information, see Launchers and Choosers for Windows Phone 8.
To use the phone number task
Add the following statement to your code.
Declare the task object. It must have page scope, so declare it in your page before the constructor.
Add the following code to your page constructor. This code initializes the task object, and identifies the method to run after the user completes the task.
Add the following code to your application wherever you need it, such as in a button click event. To test this procedure, you can put the code in the page constructor. This is the code to launch the task.
You can pre-populate the phone number, but it is not required. The user can add or edit the phone number before saving.
Add the code for the completed event handler to your page. This code runs after the user completes the task. You can check to see whether the phone number was saved successfully.
Private Sub savePhoneNumberTask_Completed(sender As Object, e As TaskEventArgs) Select Case e.TaskResult 'Logic for when the number was saved successfully Case TaskResult.OK MessageBox.Show("Phone number saved.") 'Logic for when the task was cancelled by the user Case TaskResult.Cancel MessageBox.Show("Save cancelled.") 'Logic for when the number could not be saved Case TaskResult.None MessageBox.Show("Phone number could not be saved.") End Select End Sub