Deleting contact photos using .NET

If you want to delete a contact photo from the Contacts API using the .NET client library, you can just call ContactsService.Delete(photoURI), like so:

ContactsService service = new ContactsService("exampleCo-exampleApp-1");
service.setUserCredentials("user@example.com", "secretPassword");
ContactsQuery query = new ContactsQuery(ContactsQuery.CreateContactsUri("default"));

ContactsFeed feed = service.Query(query);
foreach (ContactEntry entry in feed.Entries)
{
  service.Delete(entry.PhotoEditUri);
}

Be careful, the above code will delete every contact photo in your contact list. Run this against a test account only.