private void WardBox_OnPreviewKeyUp(object sender, KeyEventArgs e)
{
if (e.Key == Key.Back || e.Key == Key.Space)
{
WardBox.IsDropDownOpen = true;
var be = WardBox.GetBindingExpression(ComboBox.TextProperty);
be.UpdateSource();
}
if (e.Key == Key.Up && WardBox.IsDropDownOpen)
{
if (WardBox.SelectedIndex != -1)
{
WardBox.SelectedIndex = WardBox.SelectedIndex - 1;
if (WardBox.SelectedIndex == -1)
{
var be = WardBox.GetBindingExpression(ComboBox.TextProperty);
be.UpdateSource();
}
}
}
if (e.Key == Key.Down && WardBox.IsDropDownOpen)
{
if (WardBox.SelectedIndex < WardBox.Items.Count)
{
WardBox.SelectedIndex = WardBox.SelectedIndex + 1;
}
}
}
private void WardBox_OnTextInput(object sender, TextCompositionEventArgs e)
{
WardBox.IsDropDownOpen = true;
var be = WardBox.GetBindingExpression(ComboBox.TextProperty);
be.UpdateSource();
}