Problem loading DropdownLists

Hi All,

I've been trying to debug a problem but have had no luck. I have several dropdownlists on a web page. And I populate the values in the dropdownlists from the database when the page is loaded. Everything loads fine. But afterwards, if i try to repopulate the dropdownlists with new values from the database, the browser says "Page cannot be displayed". I have an event that is triggered when the index of one of the dropdownlists is changed. In the "Index_Changed" method I repopulate the dropdownlists. The "AutoPost" property of that dropdownlist is set to True.

If anyone can offer any help, it would be greatly appreciated.

Here's how the code looks like:

public partial class OrderView : System.Web.UI.Page
{
private DbOracle dbAccess = new DbOracle();

protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
InitializeRangeList();
InitializeLists();
}
}

private void InitializeLists()
{
String fromDate = GetFromDate();
String toDate = GetToDate();

// Populate lists according to the selected date range
}

private void InitializeRangeList()
{
int curYear = DateTime.Today.Year;

for (int i = curYear; i > 2000; i--)
{
String range = "" + (i - 1) + "-" + i;
Range_List.Items.Add(range);
}
}

private String GetFromDate()
{
String sel = Range_List.SelectedValue;

String first = sel.Remove(sel.IndexOf("-"));

int year = int.Parse(first);

String date = "'01/01/" + year + " 12:00:00 AM', 'dd-MM-yyyy HH:MI:SS AM'";

return date;
}

private String GetToDate()
{
String sel = Range_List.SelectedValue;

String second = sel.Substring(sel.IndexOf("-")+1);

int year = int.Parse(second);

String date = "'31/12/" + year + " 11:59:00 PM', 'dd-MM-yyyy HH:MI:SS PM'";

return date;
}

public void Range_List_SelectedIndexChanged(object sender, EventArgs e)
{
InitializeLists();
}
}