InvalidCastException from selecting ListBoxItem's Contents

My ListBoxItems contain multiple TextBoxes like this:

<ListBox Name="myList" SelectionChanged="myList_SelectionChanged">
                            <StackPanel Orientation="Vertical">

                                <TextBlock Name="nameTextBlock" 
                                       Text="{Binding Name}" 

                                <TextBlock Name="ageTextBlock" 
                                       Text="{Binding Age}" 

                                <TextBlock Name="genderTextBlock" 
                                       Text="{Binding Gender}" 

                                <TextBlock Name="heightTextBlock" 
                                       Text="{Binding Height}" 


When an item is clicked, I would like each TextBlock to be saved to IsolatedStorage under corresponding keys. Right now the closest I've gotten to this method is this:

private void mysList_SelectionChanged(object sender, SelectionChangedEventArgs e)
        ListBoxItem lbi = (ListBoxItem)myList.SelectedItem;
        appSettings["name"] = (string)lbi.Content;

But, when clicked I get an InvalidCastException. As I understand it, it's basically due to me trying to convert all four textboxes into a single string (or something like that). So how do I save each TextBox's text field independently within the ListBoxItem to an IsolatedStorage key/value? Thanks again in advance.


When you populate your ListBox by setting ItemsSource property, SelectedItem will have a reference to your class object, not ListBoxItem.

For example you have assigned ObservableCollection<Person> to ItemsSource,

Following code will do the trick:

private void mysList_SelectionChanged(object sender, SelectionChangedEventArgs e)
    Person p = (Person)myList.SelectedItem;
    appSettings["name"] = String.Format("{0}, {1}, {2}, {3}", p.Name, p.Age, p.Gender, p.Height);

Need Your Help

how to export data from cassandra to cdv file using java

java cassandra-2.0

I tried to use the DataStax Java Driver, but then i found out it does not support the COPY command, does anyone know other methods of exporting data using Java? Thanks.

About UNIX Resources Network

Original, collect and organize Developers related documents, information and materials, contains jQuery, Html, CSS, MySQL, .NET, ASP.NET, SQL, objective-c, iPhone, Ruby on Rails, C, SQL Server, Ruby, Arrays, Regex, ASP.NET MVC, WPF, XML, Ajax, DataBase, and so on.