private async Task GetContacts()
{
using (new Loading(this))
{
var items = await OfficeService.GetContacts(_curPageIndex, PageSize);
Contacts = new ObservableCollection <Contact>(items);
var tasks = Contacts.Select(x => SetContactPhoto(x));
await Task.WhenAll(tasks);
}
HasPrev = _curPageIndex > 0;
HasNext = PageSize * (_curPageIndex + 1) < _contactsCount;
IsLoading = false;
}
