Problem instantiating custom class as array elements

[kombu]

I've been working on an app to manage my iTunes collection, and have run into a bit of a snag. I've created two classes:

Column – Describes a column of information in the iTunes database
Track – Contains an array of Columns

When I instantiate a new Track object and attempt to build the array of Columns, each "new Column" statement overwrites the value of the previous array element.

I'm sure I'm missing something obvious – any ideas? (complete code is attached)

// this statement...
Track t = new Track();
// produces this output:
// array element 0 = Name
// array element 0 = Artist
// array element 1 = Artist

    public class Column
        private static string _name;
        private static string _datatype = "string";
        private static Int16 _length = 0;
        public Column(string name, string datatype, Int16 length)
        {
            _name = name;
            _datatype = datatype;
            if (datatype == "string" && length > 0)
            {_length = length; }
            else
            {_length = 0;}
        }

// Begin Track class
    public class Track
        private static Column[] _trackcolumns = new Column[2];
        public static Column[] TrackColumns
        {
            get {return _trackcolumns;}
            set { _trackcolumns = value; }
        }
        public Track()
        {
            _trackcolumns[0] = new Column("Name", "string", 30);
            Console.WriteLine("array element 0 = {0}",_trackcolumns[0].Name);
            _trackcolumns[1] = new Column("Artist", "string", 30);
            Console.WriteLine("array element 0 = {0}", _trackcolumns[0].Name);
            Console.WriteLine("array element 1 = {0}", _trackcolumns[1].Name);
        }

[GaryTexmo]

I'd imagine it's because your member variables are static. This means that there is only one instance of that object across all instances of that class.

Make your class members non-static and that should fix you up.

[kombu]

That did the trick. Thanks, Gary!