using Microsoft.Phone.UserData;

We will use Contacts and Contact class of Microsoft.Phone.UserData. Contacts class allows user to get Contacts with the specified search criteria.

Contacts initializes the Contacts class.

SearchAsync asynchronously searches for contacts.

Accounts get the accounts from which contacts are available.

SearchCompleted event triggers when search for contacts completes.

Contact class contains the data of particular contact.

GetPicture gets picture of contact

Addresses is IEnumerable which retuns addresses associated with contact as ContactAddress

BirthDays is IEnumerable which retuns bithdays associated with contact as DateTime

Children is IEnumerable which returns children associated with contact as String

Companies is IEnumerable which returns companies associated with contact as ContactCompanyInformation

DisplayName gets the display name of the contact

EmailAddresses is IEnumerable which returns emails associated with contact as ContactEmailAddress

IsPinnedStart indicates whether contact is pinned to start or not.

Notes is IEnumerable which returns notes associated with contact as String

PhoneNumbers is IEnumerable which returns phone numbers associated with contact as ContactPhoneNumber

SignificantOthers is IEnumerable which returns significant others associated with contact as String

Websites is IEnumerable which returns websites associated with contact as String

Step 3:  Add  btnContacts_Click method in MainPage.xaml.cs. SearchAsync take filter string, filterkind to search in Contacts list.

FilteKind can be DisplayName, EmailAddress, PhoneNumber, PinnedToStart or none.

private void btnContacts_Click(object sender, RoutedEventArgs e)
{
   Contacts contacts = new Contacts();
   contacts.SearchCompleted += new EventHandler<ContactsSearchEventArgs>(Contacts_SearchCompleted);

   //Start the asynchronous search.
   contacts.SearchAsync("L", FilterKind.DisplayName, null);
}

Step 4: Add reference of System.Device. It will used to details of Contact Addresses.

Step 5: Now place the Contacts_SearchCompleted method which will trigger when search of Contact from Contacts is completed.

void Contacts_SearchCompleted(object sender, ContactsSearchEventArgs e)
{
   foreach (Contact contact in e.Results)
   {
      MessageBox.Show(contact.DisplayName);
      
      foreach(ContactPhoneNumber contactPhNumber in contact.PhoneNumbers)
      {
         MessageBox.Show(contactPhNumber.Kind.ToString() + " is " + contactPhNumber.PhoneNumber);
      }

      foreach (ContactEmailAddress contactEmail in contact.EmailAddresses)
      {
         MessageBox.Show(contactEmail.Kind.ToString() + " is " + contactEmail.EmailAddress);
      }

      foreach (string website in contact.Websites)
      {
         MessageBox.Show(website);
      }

      foreach (string children in contact.Children)
      {
         MessageBox.Show(children);
      }

      foreach (DateTime birthDay in contact.Birthdays)
      {
         MessageBox.Show(birthDay.ToShortDateString());
      }

      foreach (ContactCompanyInformation contactCompInfo in contact.Companies)
      {
         MessageBox.Show("Company" + contactCompInfo.CompanyName);
         MessageBox.Show("Job Title" + contactCompInfo.JobTitle);
         MessageBox.Show("Office Location" + contactCompInfo.OfficeLocation);
      }

      foreach (string significantOthers in contact.SignificantOthers)
      {
         MessageBox.Show(significantOthers);
      }

      foreach (ContactAddress contactAddress in contact.Addresses)
      {
         System.Device.Location.CivicAddress address = contactAddress.PhysicalAddress;
         MessageBox.Show("Address Line 1" + address.AddressLine1);
         MessageBox.Show("Address Line 2" + address.AddressLine2);
         MessageBox.Show("Floor" + address.FloorLevel);
         MessageBox.Show("Building" + address.Building);
         MessageBox.Show("City" + address.City);
         MessageBox.Show("PostalCode" + address.PostalCode);
         MessageBox.Show("State Province" + address.StateProvince);
         MessageBox.Show(address.CountryRegion);
      }

      foreach (string notes in contact.Notes)
      {
         MessageBox.Show(notes);
      }
   }
}

This ends the aticle of getting Contact information in Windows Phone.