how to terminate a console program on a button click

consoleTerminate.cs

Console.WriteLine("Oop!! an error has occured");
                Console.WriteLine("Press Enter to exit the program..." + "OR" + "Press Back Space to see the error");
                ConsoleKeyInfo keyinfor = Console.ReadKey(true);
                if(keyinfor.Key == ConsoleKey.Enter)
                {
                    System.Environment.Exit(0);
                }
                else if(keyinfor.Key == ConsoleKey.Backspace)
                {
                    Console.WriteLine(ex.Message);
                }