Runtime Dependent ListBox

<%@ Page language="C#" MasterPageFile="~/MasterPage.master" %>

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
	
  <asp:WebPartManager ID="WebPartManager1" runat="server" Personalization-Enabled="true" />
  <ajax:ajaxpanel ID="Ajaxpanel1" runat="server">
  
  <fieldset>
		<legend>ASP.NET 2.0 WebParts demo <asp:LinkButton runat="server" id="Toggle" Text="[Switch to EditMode]" OnClick="Toggle_Click" /></legend>
		<i>Very cool demo of ASP.NET 2.0 WebParts running on MagicAjax.<br />Switch to EditMode and move/add/delete WebParts without a visible postback.<br />
		Note: Your modifications are stored in Session, so will be lost when you leave this site.<br />
		Note2: Dragging and dropping of WebParts is a ASP.NET 2.0 feature that is only supported for IE.</i><br /><br />
		<table width="100%"><tr><td valign="top" width="30%">
			<asp:WebPartZone runat="server" ID="WebPartZone1" Width="100%">
					<PartTitleStyle CssClass="WebPartTitle" BackColor="LightBlue" />
					<ZoneTemplate>
						<uc1:Logo ID="Logo1" runat="server" />
					</ZoneTemplate>
			</asp:WebPartZone>
			</td><td valign="top" width="30%">
			<asp:WebPartZone  runat="server" ID="WebPartZone2" Width="100%">
					<PartTitleStyle CssClass="WebPartTitle" BackColor="LightBlue" />
					<ZoneTemplate>
						<uc1:Calendar ID="Calendar1" runat="server" />
					</ZoneTemplate>
			</asp:WebPartZone>
			</td><td width="10%">&nbsp;
		</td><td valign="top" width="30%">
			<asp:CatalogZone ID="CatalogZone1" runat="server">
				<HeaderStyle BackColor="Khaki" />
				<FooterStyle BackColor="Khaki" />
				<CloseVerb Visible="false" />
				<HeaderCloseVerb Visible="false" />
				<ZoneTemplate>
					<asp:DeclarativeCatalogPart ID="DeclarativeCatalogPart1" runat="server" Title="Catalog">
						<WebPartsTemplate>
							<uc1:Logo ID="Logo1" runat="server" />
							<uc1:Calendar ID="Calendar1" runat="server" />
						</WebPartsTemplate>
					</asp:DeclarativeCatalogPart>
				</ZoneTemplate>
			</asp:CatalogZone>
		</td></tr></table>
	</fieldset>
  </ajax:ajaxpanel>
</asp:Content>

<script language="C#" runat="server">
	
	protected void Page_Load(object sender, EventArgs e)
	{
		if (!IsPostBack)
		{
			// Force setting of Session id (workaround for bug in MagicAjax)
			Session["dummy"] = "dummy";
			
			// Authenticate user with dummy userName, so the WebPartManager will allow
			// switching to Editmode.
			FormsAuthentication.SetAuthCookie("dummy", false);
		}
	}

	protected void Toggle_Click(object sender, EventArgs e)
	{
		if (WebPartManager1.DisplayMode == WebPartManager.BrowseDisplayMode)
		{
			Toggle.Text = "[Switch to ViewMode]";
			WebPartManager1.DisplayMode = WebPartManager.CatalogDisplayMode;
		}
		else
		{
			Toggle.Text = "[Switch to EditMode]";
			WebPartManager1.DisplayMode = WebPartManager.BrowseDisplayMode;
		}
	}
</script>