How do i go about Serailizing A List

[J William]

I Have A List (Fleet) Which Stores Instances of A Class (Transport) which is more specifficly (Car ,Minibus ,Truck)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
using System.IO;

namespace SD2coursework
{
    [Serializable()]
    public class Fleet
    {
        /*
         * This class is used to hold a list of Car objects that make up the fleet:
         * The car objects may be added through the addToFleet() method.
         * The car objects may be deleted tgrough the deleteFromFleet() method 
         * Use the fleet property to access the list of car objects
         */ 

        public List<Transport> theFleet = new List<Transport>(); //The list of car objects being stored
        public List<Transport> fleet 
            /* The fleet property. Note that you can only read it
             * use the addToFleet and deleteFromFleet to update it
             */
        {
            get
            {
                return theFleet;
            }
        }

        public void deleteFromFleet(Transport a)
            //Delete car from fleet
        {
            theFleet.Remove(a);
        }

        public void addToFleet(Transport a)
            //Add car to fleet
        {
            theFleet.Add(a);
        }

    }
}

The Problems Occuring are , whilst attempting to use XML i have no parameterless contructor, and using binary it cannot explictly change Fleet to Transport

[GaryTexmo]

The reason you need a parameterless constructor is because when the object is being created, the framework calls the parameterless constructor and then calls various properties to set the information.

Have a look here:

http://www.agiledeveloper.com/articles/XMLSerialization.pdf

I've found that link to be extremely valuable when trying to get XML Serialization working. There's also a section at the end for how to work with collection objects.