ASP.NET - adding tag obout:calender and getting error - why?

Question

I add this tag to my asp.net page (aspx):

<obout:Calendar runat="server"
                     ShowTimeSelector="true"
                     DateFormat="MM/dd/yyyy hh:mm:ss"
                     DatePickerMode="true"
                     TextBoxId="txtDate">
</obout:Calendar>    

but i am geting this error "unrecognized tag prefix or device filter obout" what am i missing?

thanks

Answer 1

You need to register the tag prefix "obout" by adding something along these lines to the top of your page:

<%@ Register TagPrefix="obout" Namespace="OboutInc.Calendar2" Assembly="obout_Calendar2_Net" %>

See the documentation here.