private async void Cb_countries_SelectionChanged(object sender, SelectionChangedEventArgs e)
{//select country
try
{
if (cb_countries.SelectedIndex != -1)
{
dpnl_agent.IsEnabled = true;
await FillCombo.fillAgentByCountry(cb_agents, (int)cb_countries.SelectedValue);
}
else
{
dpnl_agent.IsEnabled = false;
cb_agents.SelectedIndex = -1;
}
await Search();
}
catch (Exception ex)
{
HelpClass.ExceptionMessage(ex, this);
}
}