c# - 为什么应该是电子邮件地址显示为 Windows.ApplicationModel.Contacts.ContactField？

Question

我有这个代码：

private async void ButtonSelectContact_OnTapped(object sender, TappedRoutedEventArgs e)
{
    var contactPicker = new Windows.ApplicationModel.Contacts.ContactPicker
    {
        CommitButtonText = "Invite"
    };
    var contact = await contactPicker.PickSingleContactAsync();
    if (contact != null)
    {
        textBoxPerson.Text = contact.Name;
        textBoxEmail.Text = contact.Emails[0].ToString();
    }
}

..效果很好，除了选择联系人后，textBoxEmail.Text 包含“Windows.ApplicationModel.Contacts.ContactField”（应该类似于“rupertTpupkin@kingOfComedy.com”）。

Answer 1

That's because contacts.Emails is a list of ContactField objects. Use contact.Emails[0].Value to get the email address you want. You can use .Type to retrieve the type of the email address.

Official MSDN documentation: http://msdn.microsoft.com/en-us/library/windows/apps/windows.applicationmodel.contacts.contactfield

Answer 2

因为他们在实现类的时候并没有重写ToString()方法，所以是调用Object的ToString()方法，返回类名。你可以打电话contact.Emails[0].Value来获取价值。