"Wade" <wwegner23NOEMAILhotmail.com> wrote in message
news:%23nqm$CLTGHA.5900@tk2msftngp13.phx.gbl...
> Hi,
>
> I have used the collectionbase to create two different collections.  One
> various button clicks, I add values into these collections.  I'm having a
> problem, though, for as soon as I add more than one item to the
> collection, I am only able to retrieve the most recent item I've added.
> For example, when I debug, and look at the collectionbase list, I only see
> the "raw value" for all my items, except for the most recently added item.
>
> Any thoughts?
>
> Note: I am running this on the Compact Framework 2.0 -- from what I've
> seen, though, there shouldn't be anything different from the regular
> Framework 2.0.
>
> Here is the code I'm using:
>
>    public class PolygonPoints : CollectionBase
>    {
>        public PolygonPoints()
>        {
>        }
>
>        public PolygonPoints(PolygonPoints coll)
>        {
>            this.InnerList.AddRange(coll);
>        }
>
>        public Point this[int index]
>        {
>            get
>            {
>                return ((Point)List[index]);
>            }
>            set
>            {
>                List[index] = value;
>            }
>        }
>        public virtual void Add(Point item)
>        {
>            List.Add(item);
>        }
>        public virtual void Insert(int index, Point item)
>        {
>            List.Add(item);
>        }
>        public virtual void Remove(Point item)
>        {
>            List.Remove(item);
>        }
>        public bool Contains(Point item)
>        {
>            return List.Contains(item);
>        }
>        public int IndexOf(Point item)
>        {
>            return List.IndexOf(item);
>        }
>        public void CopyTo(Point[] array, int index)
>        {
>            List.CopyTo(array, index);
>        }
>
>        protected override void OnValidate(object value)
>        {
>            base.OnValidate(value);
>            if (!(value is Point))
>            {
>                throw new ArgumentException("PolygonPoints only supports
> Point objects.");
>            }
>        }
>
>    }
>
>    public class Polygons : CollectionBase
>    {
>        public Polygons()
>        {
>        }
>
>        public Polygons(Polygons coll)
>        {
>            this.InnerList.AddRange(coll);
>        }
>
>        public PolygonPoints this[int index]
>        {
>            get
>            {
>                return ((PolygonPoints)List[index]);
>            }
>            set
>            {
>                List[index] = value;
>            }
>        }
>        public virtual void Add(PolygonPoints item)
>        {
>            List.Add(item);
>        }
>        public virtual void Insert(int index, PolygonPoints item)
>        {
>            List.Add(item);
>        }
>        public virtual void Remove(PolygonPoints item)
>        {
>            List.Remove(item);
>        }
>        public bool Contains(PolygonPoints item)
>        {
>            return List.Contains(item);
>        }
>        public int IndexOf(PolygonPoints item)
>        {
>            return List.IndexOf(item);
>        }
>        public void CopyTo(PolygonPoints[] array, int index)
>        {
>            List.CopyTo(array, index);
>        }
>
>        protected override void OnValidate(object value)
>        {
>            base.OnValidate(value);
>            if (!(value is PolygonPoints))
>            {
>                throw new ArgumentException("Polygons only supports
> PolygonPoints objects.");
>            }
>        }
>    }
>
> Here is how I am adding data into my collections:
>
>    PolygonPoints alCurrentPolygonPoints = new PolygonPoints();
>    Point arrayPt = new Point(1,1);
>    alCurrentPolygonPoints.Add(arrayPt);
>
> And:
>
>    Polygons htPolygons = new Polygons();
>    htPolygons.Add(alCurrentPolygonPoints);
>