using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Collections;

public class TestList2 : Page
{
    protected DropDownList StateListDrop;
    protected ListBox StateListBox;
    protected CheckBoxList StateCheckBoxList;
    protected RadioButtonList StateRadioButtonList;
    protected Label OutputDrop;
    protected Label OutputBox;
    protected Label OutputCheck;
    protected Label OutputRadio;

    void Page_Load (Object sender, EventArgs e) {
	if (!IsPostBack) {
	/***** first data source: use string array - comment this and end lines to enable
		string[] states = { "AL","AK","AR","AZ","CA","CO","CT","DC","DE","FL","GA","HI","IA","ID","IL","IN","KS",
		"KY","LA","MA","MD","ME","MI","MN","MO","MS","MT","NC","ND","NE","NH","NJ","NM","NV","NY","OH","OK",
		"OR","PA","RI","SC","SD","TN","TX","UT","VA","VT","WA","WI","WV","WY"};
		StateListDrop.DataSource = states;
		StateListBox.DataSource = states;
		StateCheckBoxList.DataSource = states;
		StateRadioButtonList.DataSource = states;
	****** end first method */
//	/***** second data source: enumeration type - comment this and end lines to enable
		StateListDrop.DataSource = new States ();
		StateListBox.DataSource = new States ();
		StateCheckBoxList.DataSource = new States ();
		StateRadioButtonList.DataSource = new States ();
//	****** end second method */
		StateListDrop.DataBind ();
		StateListBox.DataBind ();
		StateCheckBoxList.DataBind ();
		StateRadioButtonList.DataBind ();
		// demonstrate enumeration type
		OutputDrop.Text = "demo States enumeration: ";
		foreach(string state in new States())
			OutputDrop.Text += " " + state;

	}
   }

 
    public void OnRadioSelect (Object sender, EventArgs e) {
	OutputRadio.Text = "Changed Radio Selection to: " + StateRadioButtonList.SelectedItem.Text;
    }

    public void OnSubmit (Object sender, EventArgs e)
    {
	ArrayList multipleStates = GetSelectedItems (StateCheckBoxList);

	OutputDrop.Text = "Drop Selection is: " + StateListDrop.SelectedItem.Text;
	OutputBox.Text = "ListBox Selection is:" + StateListBox.SelectedItem.Text;
	OutputRadio.Text = "Radio Button Selection is:" + StateRadioButtonList.SelectedItem.Text;
	OutputCheck.Text = "Check List Selection is: ";
	foreach (string state in multipleStates) {
	   OutputCheck.Text += " " + state;
	}
    }

    ArrayList GetSelectedItems (CheckBoxList lb)
    {
       ArrayList a = new ArrayList ();
   
       for (int i=0; i<lb.Items.Count; i++) {
          if (lb.Items[i].Selected)
             a.Add (lb.Items[i].Text);
       }
       return a;
    }

}

class States : IEnumerable
{
    protected Enumerator enumerator = new Enumerator ();

    public IEnumerator GetEnumerator ()
    {
        return enumerator;
    }

    public class Enumerator : IEnumerator
    {
        protected int index = -1;
        protected string[] states = { "AL","AK","AR","AZ","CA","CO","CT","DC","DE","FL","GA","HI","IA","ID","IL","IN","KS",
		"KY","LA","MA","MD","ME","MI","MN","MO","MS","MT","NC","ND","NE","NH","NJ","NM","NV","NY","OH","OK",
		"OR","PA","RI","SC","SD","TN","TX","UT","VA","VT","WA","WI","WV","WY"};
        public object Current
        {
            get
            {
                if (index == -1)
                    index = 0; // Just in case
                return states[index];
            }
        }

        public bool MoveNext ()
        {
            if (index < (states.Length - 1)) {
                index++;
                return true;
            }
            return false;
        }

        public void Reset ()
        {
            index = -1;
        }
    }
}