Atlas:  PopupControlExtender error message

Posted on 2006-05-01
Last Modified: 2008-01-09
I've implemented the dlls associated with Atlas and referenced them in my
C# ASP.Net project.  I continue to get the following error.  Please help!

Error      2      Element 'PopupControlExtender' is not a known element. This can occur if there is a compilation error in the Web site.      

This is my HTML code:

                <atlasToolkit:UpdatePanel ID="DatePickerUpdatePanel" runat="server">


                        <atlasToolkit:PopupControlExtender ID="PopupControlExtender" runat="server">    <====ERROR OCCURS HERE!
                            <atlasToolkit:PopupControlProperties TargetControlID="DateTextBox" PopupControlID="DatePickerPanel" Position="Bottom" />



                            <asp:Calendar ID="DatePickerCalendar" runat="server" BackColor="White" BorderColor="#999999" CellPadding="1" DayNameFormat="Shortest" Font-Names="Verdana" Font-Size="8pt" ForeColor="Black" Width="160px" OnSelectionChanged="DatePickerCalendar_SelectionChanged">

                                <SelectedDayStyle BackColor="#666666" Font-Bold="True" ForeColor="White" />

                                <TodayDayStyle BackColor="#CCCCCC" ForeColor="Black" />

                                <SelectorStyle BackColor="#CCCCCC" />

                                <WeekendDayStyle BackColor="#FFFFCC" />

                                <OtherMonthDayStyle ForeColor="#808080" />

                                <NextPrevStyle VerticalAlign="Bottom" />

                                <DayHeaderStyle BackColor="#CCCCCC" Font-Bold="True" Font-Size="7pt" />

                                <TitleStyle BackColor="#999999" BorderColor="Black" Font-Bold="True" />




Question by:JeffDrummond
    LVL 11

    Accepted Solution

    Hi, it seems that PopupControlExtender cannot compile. You may check it source and see what is causing the compilation error.

    Author Comment

    The error was occurring because I needed to add the reference for the AtlasControlToolkit to the
    web.config file.  Previously I had only the reference to the Microsoft.Web.Atlas in the config file.

              <add namespace="Microsoft.Web.UI" assembly="Microsoft.Web.Atlas" tagPrefix="atlasToolkit"/>
            <add namespace="Microsoft.Web.UI.Controls" assembly="Microsoft.Web.Atlas" tagPrefix="atlasToolkit"/>
            <add namespace="AtlasControlToolkit" assembly="AtlasControlToolkit" tagPrefix="atlasToolkit"/>


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