time does not show up

I have this code for undo check in button in my webform which when clicked creates a note and this note get displayed with the time it was created,now the error is the note get created dynamically but the created time doesnot show it says created time 00:00 in the code...am I doing something wrong with the code
 
<asp:Button ID="btnUndoCheckIn" runat="server" CssClass="main" Text="Undo Check In" Visible="False" OnClick="btnUndoCheckIn_Click" OnClientClick="javascript: return confirm('Are you sure you wish to completely undo this checkin?')" />
 
protected void btnUndoCheckIn_Click(object sender, EventArgs e)
        {
            int reservationId;
            Int32.TryParse(Request["BookingId&quo ...