Default Selected Date of CalendarExtender

Hi,
I have a CalendarExtender inside a gridview. How do I define the selectedDate?
<asp:TextBox ID="StartDateTextBox" Text='<%# Bind("StartDate") %>' runat="server" Width="70px" BorderStyle="Groove" /> <asp:CalendarExtender ID="StartDateCalendar" runat="server" TargetControlID="StartDateTextBox" Format="MMMM d, yyyy" /> I want the selected date to be the value that is in the StartDateTextBox or the first day of the current fiscal year.
Thanks,
Ana
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