CheckBoxList loses state

Hi,
I have an asp.net CheckBoxList, that loses it's items on post back, and therefore it's selected state.

Any ideas would be greatly appreciated

// inside page load
if (cbl.Items.Count == 0)
{
    cbl.DataSource = dt;
    cbl.DataBind();
}

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<asp:CheckBoxList ID="cbl" runat="server" DataTextField="description" DataValueField="code" Width="150px" BorderStyle="Solid" BorderWidth="1px" BorderColor="CadetBlue" > </asp:CheckBoxList>

praveenvenu
I was using that line to see if the items in the list were gone, if so, I was putting them back.

Removing the if statement has no effect.

urvinayan
see code below

cheers

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="client_sensory.ascx.cs" Inherits="CommonControls_client_sensory" %>
<%@ Register Assembly="DevExpress.Web.v8.2, Version=8.2.2.0, Culture=neutral, PublicKeyToken=9b171c9fd64da1d1" Namespace="DevExpress.Web.ASPxCallbackPanel" TagPrefix="dxcp" %>
<%@ Register Src="~/CommonControls/GridUpdateCancel.ascx" TagName="UpdateCancel" TagPrefix="uc1" %>
<%@ Register Assembly="DevExpress.Web.v8.2, Version=8.2.2.0, Culture=neutral, PublicKeyToken=9b171c9fd64da1d1" Namespace="DevExpress.Web.ASPxRoundPanel" TagPrefix="dxrp" %>
<%@ Register Assembly="DevExpress.Web.v8.2, Version=8.2.2.0, Culture=neutral, PublicKeyToken=9b171c9fd64da1d1" Namespace="DevExpress.Web.ASPxPanel" TagPrefix="dxp" %>
<%@ Register Assembly="DevExpress.Web.ASPxGridView.v8.2, Version=8.2.2.0, Culture=neutral, PublicKeyToken=9b171c9fd64da1d1" Namespace="DevExpress.Web.ASPxGridView" TagPrefix="dxwgv" %>
<%@ Register Assembly="DevExpress.Web.ASPxEditors.v8.2, Version=8.2.2.0, Culture=neutral, PublicKeyToken=9b171c9fd64da1d1" Namespace="DevExpress.Web.ASPxEditors" TagPrefix="dxe" %>
<link href="~/Styles/mdc.css" rel="Stylesheet" type="text/css" />
<div class="selector" style="font-size: 10pt;">
	<dxrp:ASPxRoundPanel ID="pnlContacts" runat="server" BackColor="#EBF2F4" CssFilePath="~/App_Themes/Glass/{0}/styles.css" CssPostfix="Glass" Style="margin: 5px;" HeaderText="Sensory" Width="775px">
		<LeftEdge>
			<BackgroundImage Repeat="RepeatX" VerticalPosition="bottom" ImageUrl="~/App_Themes/Glass/Web/rpLeftRightEdge.gif" />
		</LeftEdge>
		<BottomRightCorner Height="5px" Width="5px" Url="~/App_Themes/Glass/Web/rpBottomRightCorner.png" />
		<HeaderContent>
			<BackgroundImage Repeat="RepeatX" VerticalPosition="bottom" ImageUrl="~/App_Themes/Glass/Web/rpHeaderBack.gif" />
		</HeaderContent>
		<ContentPaddings PaddingTop="10px" PaddingBottom="10px" PaddingLeft="4px" />
		<NoHeaderTopRightCorner Height="5px" Width="5px" Url="~/App_Themes/Glass/Web/rpNoHeaderTopRightCorner.png" />
		<RightEdge>
			<BackgroundImage Repeat="RepeatX" VerticalPosition="bottom" ImageUrl="~/App_Themes/Glass/Web/rpLeftRightEdge.gif" />
		</RightEdge>
		<HeaderRightEdge>
			<BackgroundImage VerticalPosition="bottom" ImageUrl="~/App_Themes/Glass/Web/rpHeaderRightEdge.gif" />
		</HeaderRightEdge>
		<Border BorderWidth="1px" BorderStyle="Solid" BorderColor="#7EACB1" />
		<HeaderStyle BackColor="White" Height="23px">
			<Paddings PaddingTop="0px" PaddingBottom="0px" PaddingLeft="2px" />
			<BorderBottom BorderStyle="None" />
		</HeaderStyle>
		<Content>
			<BackgroundImage Repeat="RepeatX" VerticalPosition="bottom" ImageUrl="~/App_Themes/Glass/Web/rpContentBack.gif" />
		</Content>
		<HeaderLeftEdge>
			<BackgroundImage Repeat="RepeatX" VerticalPosition="bottom" ImageUrl="~/App_Themes/Glass/Web/rpHeaderLeftEdge.gif" />
		</HeaderLeftEdge>
		<BottomEdge BackColor="#D7E9F1" />
		<TopRightCorner Height="5px" Width="5px" Url="~/App_Themes/Glass/Web/rpTopRightCorner.png" />
		<NoHeaderTopLeftCorner Height="5px" Width="5px" Url="~/App_Themes/Glass/Web/rpNoHeaderTopLeftCorner.png" />
		<PanelCollection>
			<dxp:PanelContent runat="server" _designerRegion="0">
				<div>
					<asp:ImageButton ID="btnUpdateTop" runat="server" AlternateText="Save details" ImageUrl="~/Images/icon_save.gif" OnClientClick="callbackMain.PerformCallback('Save'); return false;" PostBackUrl="javascript:void(0);" Style="margin: 5px" />
					<br />
					<asp:Panel ID="Panel2" runat="server" BackColor="#FFC8C8" BorderColor="#7EACB1" BorderStyle="Solid" BorderWidth="1px" ForeColor="#333333" Height="40px" Visible="False" Width="100%">
						<br />
						<asp:Label ID="Label2" runat="server" Font-Bold="True" ForeColor="#333333" Style="padding-right: 10px; padding-left: 10px; padding-bottom: 10px; vertical-align: middle; padding-top: 10px" Text="Unable to save - please correct errors" />
					</asp:Panel>
					<dxcp:ASPxCallbackPanel ID="callbackMain" ClientInstanceName="callbackMain" runat="server" CssFilePath="~/App_Themes/Glass/{0}/styles.css" CssPostfix="Glass" ImageFolder="~/App_Themes/Glass/{0}/" Width="200px" OnCallback="callbackMain_Callback">
						<PanelCollection>
							<dxp:PanelContent runat="server" _designerRegion="0">
								<table width="100%">
									<tr>
										<td>
										</td>
										<td>
											<strong>Support:</strong>
										</td>
										<td>
											<strong>Need:</strong>
										</td>
										<td>
											<strong>Comments:</strong>
										</td>
									</tr>
									<tr>
										<td style="vertical-align: top" colspan="4">
											Do you need help to communicate?
										</td>
									</tr>
									<tr>
										<td style="vertical-align: top;">
											<dxe:ASPxComboBox ID="ddlCommunication" runat="server" ValueField="code" TextField="description" CssFilePath="~/App_Themes/Glass/{0}/styles.css" CssPostfix="Glass" EnableIncrementalFiltering="True" ImageFolder="~/App_Themes/Glass/{0}/" ValueType="System.String" Width="150px" ClientInstanceName="ddlCommunication">
												<ButtonStyle Width="13px" />
												<ValidationSettings>
													<ErrorFrameStyle ImageSpacing="4px">
														<ErrorTextPaddings PaddingLeft="4px" />
													</ErrorFrameStyle>
													<ErrorImage Height="14px" Url="~/App_Themes/Glass/Editors/edtError.png" Width="14px" />
												</ValidationSettings>
												<ClientSideEvents SelectedIndexChanged="function(s, e) {
	callbackMain.PerformCallback('disableSupport' + ':' + ddlCommunication.GetText());
}" />
											</dxe:ASPxComboBox>
										</td>
										<td style="vertical-align: top;">
											<asp:CheckBoxList ID="cblSupport" runat="server" DataTextField="description" DataValueField="code" Width="150px" BorderStyle="Solid" BorderWidth="1px" BorderColor="CadetBlue" >
											</asp:CheckBoxList>
										</td>
										<td style="vertical-align: top;">
											<dxe:ASPxComboBox ID="ddlNeed" ClientInstanceName="ddlNeed" runat="server" CssFilePath="~/App_Themes/Glass/{0}/styles.css" CssPostfix="Glass" EnableIncrementalFiltering="True" ImageFolder="~/App_Themes/Glass/{0}/" ValueType="System.String" Width="150px" TextField="description" ValueField="code">
												<ValidationSettings>
													<ErrorFrameStyle ImageSpacing="4px">
														<ErrorTextPaddings PaddingLeft="4px" />
													</ErrorFrameStyle>
													<ErrorImage Height="14px" Url="~/App_Themes/Glass/Editors/edtError.png" Width="14px" />
												</ValidationSettings>
												<ButtonStyle Width="13px" />
											</dxe:ASPxComboBox>
										</td>
										<td style="vertical-align: top;">
											<dxe:ASPxMemo ID="txtComments" runat="server" CssFilePath="~/App_Themes/Glass/{0}/styles.css" CssPostfix="Glass" Rows="4" Width="200px">
												<ValidationSettings>
													<ErrorFrameStyle ImageSpacing="4px">
														<ErrorTextPaddings PaddingLeft="4px" />
													</ErrorFrameStyle>
													<ErrorImage Url="~/App_Themes/Glass/Editors/edtError.png" />
												</ValidationSettings>
											</dxe:ASPxMemo>
										</td>
									</tr>
								</table>
							</dxp:PanelContent>
						</PanelCollection>
					</dxcp:ASPxCallbackPanel>
					<asp:Panel ID="Panel1" runat="server" BackColor="#FFC8C8" BorderColor="#7EACB1" BorderStyle="Solid" BorderWidth="1px" ForeColor="#333333" Height="40px" Visible="False" Width="100%">
						<br />
						<asp:Label ID="Label1" runat="server" Font-Bold="True" ForeColor="#333333" Style="padding-right: 10px; padding-left: 10px; padding-bottom: 10px; vertical-align: middle; padding-top: 10px" Text="Unable to save - please correct errors" />
					</asp:Panel>
					<br />
					<asp:ImageButton runat="server" ID="btnUpdateBottom" PostBackUrl="javascript:void(0);" AlternateText="Save details" ImageUrl="~/Images/icon_save.gif" OnClientClick="callbackMain.PerformCallback('Save'); return false;" Style="margin: 5px" />
				</div>
			</dxp:PanelContent>
		</PanelCollection>
		<TopLeftCorner Height="5px" Width="5px" Url="~/App_Themes/Glass/Web/rpTopLeftCorner.png" />
		<NoHeaderTopEdge BackColor="#EBF2F4" />
		<BottomLeftCorner Height="5px" Width="5px" Url="~/App_Themes/Glass/Web/rpBottomLeftCorner.png" />
	</dxrp:ASPxRoundPanel>
</div>

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Question

CheckBoxList loses state

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