Having Issue with AjaxCalendarExtenderControl.Add in ASP.NET

The following code:
Private Sub AddCalendarExtender()
AddControlToCollection(AjaxCalendarExtenderControl.Add(“Calendar” & QuestionCounter, ControlID, “Image” & QuestionCounter))
End Sub
Tied to:

Namespace Survey.BusinessDelegate
Public Class AjaxCalendarExtenderControl
Public Sub New()

    Public Shared Function Add(ID As String, TargetControlID As String, ImageButtonID As String) As CalendarExtender
End Class

End Namespace
Will not display calendar. Works on production server but not visual studio debugger.
Does anyone have any ideas on how to get the Calendar to display?

Tried executing Ajaxcalendarextender code but it does not display calendar?