public class Concat_LINQ { static string ContextString = System.Configuration.ConfigurationSettings.AppSettings["ContextString"].ToString(); static DataContext context = new DataContext(ContextString); static Table<Contact> contacts = context.GetTable<Contact>(); static Table<SalesOrderHeader> orders = context.GetTable<SalesOrderHeader>(); public static void Concat_Print() { string[] FirstName = new string[] { "Robert", "Kim", "Lili", "Anna", }; string[] LastName = new string[] { "_Adams", "_Adina", "_Alameda", "_Albury" }; var conCatQuery = FirstName.Select(f => f).Concat(LastName.Select(l => l)); var query = contacts.Select(c => c.LastName).Concat(orders.Select(ord => ord.CustomerID.ToString())); foreach (var item in conCatQuery) { Console.WriteLine(item); } Console.ReadKey(); } }