.NET und PDF Software

    public class Detail
    {
        public String Caption { get; set; }
        public int Id { get; set; }
 
        public Detail(string caption)
        {
            Caption = caption;
        }
    }
 
    public class DetailList: List<Detail>
    {
        public String DetailListCaption { get; set; }
 
        public DetailList(string masterCaption)
        {
            DetailListCaption = masterCaption;
        }
    }
 
    public class Master: List<DetailList>
    { }

    private Master master = new Master();
...
    master.Add(new DetailList("Cap Master 1"));
    master.Add(new DetailList("Cap Master 2"));
 
    master[0].Add(new Detail("Cap Detail 1.1"));
    master[0].Add(new Detail("Cap Detail 1.2"));
    master[1].Add(new Detail("Cap Detail 2.1"));
    master[1].Add(new Detail("Cap Detail 2.2"));

    masterBindingSource = new BindingSource {DataSource = typeof (Master)};
    comboBox1.DataSource = masterBindingSource;
    comboBox1.DisplayMember = "DetailListCaption";
 
    detailBindingSource = new BindingSource {DataSource = typeof (DetailList)};
    comboBox2.DataSource = detailBindingSource;
    comboBox2.DisplayMember = "Caption";
 
    masterBindingSource.CurrentChanged += masterBindingSource_CurrentChanged;
...
    private void masterBindingSource_CurrentChanged(object sender, EventArgs e)
    {
        detailBindingSource.DataSource = masterBindingSource.Current;
    }

    masterBindingSource.DataSource = master;