Silverlight/WPF unable to bind ListBox

Question

I have a listbox in my silverlight usercontrol and I am filling it with a generic list of a private class, for some reason it is not being databound.

Here is the code :

class userClient
{
    public int characterID { get; set; }
    public string characterName { get; set; }
}

List<userClient> userClientList; // = new List<userClient>();

void _client_UserList(object sender, DataTransferEventArgs e)
{
    this.Dispatcher.BeginInvoke(() =>
    {
        userClientList = new List<userClient>();
        foreach (string user in e.DataTransfer.Data)
        {
            var userDetailsArray = user.Split('+');
            userClient uc = new userClient
            {
                characterID = Convert.ToInt32(userDetailsArray[0]),
                characterName = userDetailsArray[1]
            };             
            userClientList.Add(uc);
        }

        chatUsers.ItemsSource = userClientList;
        chatUsers.DisplayMemberPath = "characterName";
    });
}

I checked the generic list userClientList and it is being filled up so there is no problems there.

This is the XAML of the listbox:

<ListBox x:Name="chatUsers" Grid.Row="0" Grid.Column="1" Margin="2 2 2 2" />

Answer 1

Do you have any binding errors messages logged in Output Window in Visual Studio?

Edit:

Just noticed that your collection is a field while it should be public property

public List<userClient> userClientList { get; set; }

Answer 2

Thank you! Thank you Mokosh! The error -- System.Windows.Data Error: 39 : BindingExpression path error -- drove me crazy through two WPF books without finding the answer that you emphasized -- I didn't create properties on my class members.