private void HintTextBox_BaseTextChanged(object sender, RoutedEventArgs e)
        {
            var txtbox = sender as HintTextBox;

            EvtHub.Publish(new HintBoxTextChangedArgs(txtbox.IsNumeric, txtbox.BaseText));
        }
 private void ExpanderBtn_Click(object sender, RoutedEventArgs e)
 {
     EvtHub.Publish(new HintBoxTextChangedArgs(false, string.Empty));
 }
 private void FilterListBoxRefresh(object sender, RoutedEventArgs e)
 {
     EvtHub.Publish(new HintBoxTextChangedArgs(false, string.Empty));
 }