You could iterate the SelectedItems property in order to retrieve the selected items from the list box. In the unbound mode, each object will need to be cast to UXListBoxItem, here is the snippet:

private void uXButton1_Click(object sender, RoutedEventArgs e)
{
    string test = "";
    foreach (UXListBoxItem item in (IEnumerable<object>)uXListBox1.SelectedItems)
    {
        test += (string.IsNullOrEmpty(test) ? "" : ", ") + item.Content.ToString();
    }

    MessageBox.Show("Selected item: " + Environment.NewLine + test);
}

Glenn;

Thanks for your answer. Is detailed documentaion on how to construct the UXListBox?  I am not sure how to go about casting each object to UXListBoxItem.  I have created the content of my UXListBox with the following code:

private void LoadData3()

        {

            PSSLServiceRef.PSSLServiceClient client = new PSSLServiceRef.PSSLServiceClient();

            client.GetProjectsCompleted += new EventHandler<GetProjectsCompletedEventArgs>(client_GetProjectsCompleted);

            client.GetProjectsAsync();

        }

        void client_GetProjectsCompleted(object sender, GetProjectsCompletedEventArgs e)

        {

            try

            {

  this.listBox3.ItemsSource = e.Result;

                this.listBox3.DisplayMemberPath = "ProjectName";

            }

            catch (DataServiceQueryException ex)

            {

                this.tb1.Text = string.Format("Error: {0} - {1}",

                    ex.Response.StatusCode.ToString(), ex.Response.Error.Message);

            }

        }

Thanks,

Al

Casting to UXListBoxItem only works if the UXListBox is in Unbound mode. In your case, the UXListBox is bounded to a collection of object. In such case, you will need to cast the item to the Object of the collection.

Attached is a simple sample which demonstrate such scenario.