private void PhoneTextBox_Validating(object sender, System.ComponentModel.CancelEventArgs e)
{
if (!PhoneTextBox.MaskCompleted)
{
ErrorIcon.SetError(PhoneTextBox, "Wrong phone number");
}
else if (!authorization.IsPhoneExist(PhoneTextBox.Text))
{
ErrorIcon.SetError(PhoneTextBox, "Phone is not exists");
}
else
{
ErrorIcon.Clear();
}
}
