private async void OnItemSelected(object sender, SelectedItemChangedEventArgs e)
{
Contact selectedContact = (Contact)e.SelectedItem;
Contact_info contact_info = new Contact_info();
contact_info.BindingContext = selectedContact;
await Navigation.PushAsync(contact_info);
}
private async void SaveContact(object sender, EventArgs e)
{
var contact = (Contact)BindingContext;
if (!String.IsNullOrEmpty(contact.Name))
{
App.Database.SaveItem(contact);
}
Contact_info contact_info = new Contact_info();
contact_info.BindingContext = contact;
await Navigation.PushAsync(contact_info);
}