private void cboP_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (cboP.SelectedValue != null)
{
var value = cboP.SelectedValue.ToString();
cboD.ItemsSource = null;
try
{
if (Provinces.Equals("-1"))
{
cboC.ItemsSource = null;
return;
}
}
catch {
cboC.ItemsSource = null;
return;
}
LoadCities(value);
}
}