"Uwe Lesta" wrote:

> Hello NG,
>
> I am despairing, please help me.
>
> With VS2005 i drag 2 Listboxes on my form and a bindingsource.
> Listbox1 is bind to a bindingSource1.DataSource = data
> Listbox2 is bind to a Listbox2.DataSource = subItemsBindingSource
>
> all work as expected. When i select a item in listBox1, listbox2 display the details.
>
> In the next step i implement
> private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
> {
> if (listBox1.SelectedIndex >= 0)
> listBox2.SelectedValue = _data[listBox1.SelectedIndex].SelectedSubItem.Name;
> }
> to select a default value for listbox 2. Fine.
>
> Trouble starts when i try to record the changes of listbox2 with
> private void listBox2_SelectedValueChanged(object sender, EventArgs e)
> {
> if (listBox2.SelectedIndex > 0)
> _data[listBox1.SelectedIndex].SubItemName = (string)listBox2.SelectedValue;
> }
>
> What is the right / advised way to implement such a behaviour ?
> Please Help.
>
>
> ----------------------
> public class data
> {
> private string _name;
> private string _subItemName;
> private subData _selectedSubItem;
> private List<subData> _subItems;
>
> public string Name { get { return _name; } set { _name = value; } }
> public string SubItemName { get { return _subItemName; } set { _subItemName = value; } }
> public List<subData> SubItems { get { return _subItems; } set { _subItems = value; } }
> public subData SelectedSubItem { get { return _selectedSubItem; } set { _selectedSubItem = value; } }
> }
>
> public class subData
> {
> private string _name;
> public string Name { get { return _name; } set { _name = value; } }
> public subData(string n) { _name = n; }
> }
>
>
> public partial class Form1 : Form
> {
> public data[] _data;
> public Form1()
> {
> InitializeComponent();
> _data = new data[] {new data(), new data(), new data() };
> _data[0].Name = "first";
> _data[0].SubItemName = "first_2";
> _data[0].SubItems = new List<subData>(new subData[] { new subData("first_1"), new subData("first_2"), new
> subData("first_3") });
> _data[0].SelectedSubItem = _data[0].SubItems[1];
> _data[1].Name = "second";
> _data[1].SubItemName = "second_3";
> _data[1].SubItems = new List<subData>(new subData[] { new subData("second_1"), new subData("second_2"), new
> subData("second_3") });
> _data[1].SelectedSubItem = _data[1].SubItems[2];
> _data[2].Name = "thhird";
> _data[2].SubItemName = "thhird_2";
> _data[2].SubItems = new List<subData>(new subData[] { new subData("thhird_1"), new subData("thhird_2"), new
> subData("thhird_3") });
> _data[2].SelectedSubItem = _data[2].SubItems[1];
>
> bindingSource1.DataSource = _data;
> }
> }
> ----------------------
>
> Kind regards
>
> Uwe
>