Combine data of 2 or more columns into single Datagrid field

Question

Hi,

I am trying to combine 2 fields from a data source into a single DataGridTextColumn field in WPF.

dgTicketDisplay.Columns.Clear();

        dgTicketDisplay.Columns.Add(new DataGridTextColumn { Header = "Name", Binding = new Binding("Pax.LastName,Pax.FirstName") });
        dgTicketDisplay.Columns.Add(new DataGridTextColumn { Header = "Phone", Binding = new Binding("Pax.PhoneNumber") });
        dgTicketDisplay.Columns.Add(new DataGridTextColumn { Header = "E-Mail", Binding = new Binding("Pax.EmailId") });

I need the Last Name and First Name displayed jointly in Name field properly formated, something like "Smith Josh". Can anyone help me out on this?

Thanks