thank you, this is also a good sample if any of you have the same problem as I. http://www.codeproject.com/KB/list/EXListView.aspx?df=100&forumid=266091&exp=0&select=1427247[^]

Hey again, I found a solution for my problem. It to have " and ' in CSVReader class, then it works

Thank you very much, It was very heplfull

saku69 wrote: Result selObject = ((sender as ListBox).SelectedItem) as Result; Your sender is the Hyperlink control and not the listbox. You are trying to cast a Hyperlink (which is the sender) as a ListBox and hence you are getting a Null object. You are passing the null object to GetInfocard method which is causing the exception. to get the selected item you should be doing Result selObject = lbResults.SelectedItem as Result I would suggest you to put a breakpoint in Infocard_Click and step in to find out why something is null. I am sure that it is because of you wrong casting as I have mentioned above.

I hope you found this useful : private void Windows_Loaded(object sender, RoutedEventArgs e) { AddHandler(Hyperlink.ClickEvent, (RoutedEventHandler)Hyperlink_Click); } private void Hyperlink_Click(object sender, RoutedEventArgs e) { if (e.OriginalSource is Hyperlink) { Process.Start((e.OriginalSource as Hyperlink).NavigateUri.AbsoluteUri); e.Handled = true; } }