Hi all,

I have a very simple user control that contains 3 drop downs. Whenever
there's a postback the values of these drop downs are lost. I've tried
enabling viewstate everywhere without success. Could anyone shed any
light on what's going wrong?

Thanks,

Paul

Asx:

<%@ Control Language="C#" EnableViewState="true" AutoEventWireup="true"
CodeFile="DayMonthYear.ascx.cs" Inherits="Test.DayMonthYear" %>
<%@ Register TagPrefix="test" Namespace="Test" %>
<table cellpadding="1" cellspacing="0">
    <tr>
        <td><small>Day</small></td>
        <td><small>Month</small></td>
        <td><small>Year</small></td>
    </tr>
    <tr>
        <td><asp:DropDownList ID="day" EnableViewState="true"
runat="server"></asp:DropDownList></td>
        <td><asp:DropDownList ID="month" EnableViewState="true"
runat="server"></asp:DropDownList></td>
        <td><asp:DropDownList ID="year" EnableViewState="true"
runat="server"></asp:DropDownList></td>
    </tr>
</table>

Asx.Cs:

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

namespace Test
{
    public partial class DayMonthYear : System.Web.UI.UserControl,
INamingContainer
    {
        private int _yearHigh = DateTime.Now.Year;
        private int _yearLow = DateTime.Now.Year - 100;

        protected void Page_PreRender(object sender, EventArgs e)
        {
            string[] months = new string[] { "January", "February", "March",
"April", "May", "June", "July", "August", "September", "October",
"November", "December" };

            // add days
            day.Items.Add(new ListItem(string.Empty, "0"));
            for (int i = 1; i < 32; i++)
                day.Items.Add(i.ToString());

            // add months
            month.Items.Add(new ListItem(string.Empty, "0"));
            for (int i = 0; i < months.Length; i++)
                month.Items.Add(new ListItem(months[i], (i + 1) + string.Empty));

            // add years
            year.Items.Add(new ListItem(string.Empty, "0"));
            for (int i = YearLow; i <= YearHigh; i++)
                year.Items.Add(i.ToString());
        }

        public int YearHigh
        {
            get { return _yearHigh; }
            set { _yearHigh = value; }
        }

        public int YearLow
        {
            get { return _yearLow; }
            set { _yearLow = value; }
        }
    }
}