如何在点击上一个/下个月时停止刷新javascript datepicker？

Question

我有一个日历范围的javascript日历日期选择器，用于从数据库中重新生成数据。我需要在上一个/下个月或年份点击时停止刷新它。

 <label>From</label>
          <asp:TextBox ID="StartDate" AutoPostBack="True" 
     MaxLength="10" width="90px" Height='18px' runat="server" 
 OnTextChanged ="StartDate_OnSelectedIndexChanged" />
          <img src="/Images/calendar.gif" class='calendarImage' id="ShowStartDate" />
          <script type="text/javascript">
              Calendar.setup({
                  inputField: "<%=StartDate.ClientID %>", // ID of the input field
                  ifFormat: "%m/%d/%Y", // the date format
                  button: "ShowStartDate" // ID of the button

              });
          </script>

          <label>To</label>
   <asp:TextBox ID="EndDate" MaxLength="10" Width="90px" Height='18px' 
   runat="server"  AutoPostBack="True" 
OnTextChanged ="EndDate_OnSelectedIndexChanged" />
          <img src="/Images/calendar.gif" class='calendarImage' id="ShowEndDate"  />
          <script type="text/javascript">
              Calendar.setup({
                  inputField: "<%=EndDate.ClientID %>", // ID of the input field
                  ifFormat: "%m/%d/%Y", // the date format
                  button: "ShowEndDate" // ID of the button
              });
          </script>

这是事件处理程序：

protected void StartDate_OnSelectedIndexChanged(object sender, EventArgs e)

    {
        BindGrid();
    }
    protected void EndDate_OnSelectedIndexChanged(object sender, EventArgs e)
    {
        BindGrid();
    }