How to access contacts list in Windows Phone 7?

How do you access the contacts store (the contact list) within Windows Phone 7?

Thanks!

开发者_如何学Cupdate: It seems that this might be available in the next version of WP7, Mango:

Link

EDIT: This answer was correct at the time of posting. In Windows Phone 7.1 (Mango) third-party applications will have access to contacts.

You can't. You're not allowed to. That's viewed as private data that applications shouldn't be touching.

EDIT: Although you can't directly access the contacts list, you can launch the EmailAddressChooserTask or PhoneNumberChooserTask to get back just that piece of information about a user-specified contact. (Likewise you can launch a task to save a phone number or email address.)

There is a official Walkthrough at Microsoft especially for Mango Beta 2.

Windows Phone SDK 7.1 Beta 2 gives you read-only access to the user’s contact data, aggregated across the user's different accounts.

Only possible way to save new details to a contact is via the Launchers:

• SaveEmailAddressTask
• SavePhoneNumberTask
• SaveContactTask (which is new to Mango Beta 2)

For read only you can use:

• PhoneNumberChooserTask
• EmailAddressChooserTask
• AddressChooserTask (which is new to Mango Beta 1)

If you want to query the whole contact list, you will need LINQ.

Check the WP7.1 SDK Beta for the class "Contacts" listed in the namespace UserData . Now you should be able to...