RadDatePicker SelectedDateChanged问题

Question

我有一个带有SelectedDateChanged事件的RadDatePicker控件。当我更改日期时，事件触发并显示确认窗口。当我点击'Cancel‘按钮时，RadDatePicker1_SelectedDateChanged会再次调用，并显示两次确认窗口。当我点击“确定”按钮时，它工作得很好。可能的问题是什么？谢谢你的建议。

  <telerik:RadDatePicker ID="RadDatePicker1" runat="server" AutoPostBack="true" OnSelectedDateChanged="RadDatePicker1_SelectedDateChanged" >
                         </telerik:RadDatePicker>


protected void RadDatePicker1_SelectedDateChanged(object sender, EventArgs e)
{
string radalertscript = "<script language='javascript'>function f(){ radconfirm('Are you sure?', confirmChange, 400, 100) ; Sys.Application.remove_load(f);}; Sys.Application.add_load(f);</script>";
                     Page.ClientScript.RegisterStartupScript(this.GetType(), "radalert33", radalertscript);
 }

以下是Javascript函数

function confirmChange(args) {
    if (args) {
        __doPostBack("<%= hiddenButton1.UniqueID %>", "");
    }

Answer 1

如果你只是用它来渲染一些javascript，那么它看起来就像是一个不必要的回发。

你能在客户端做确认对话吗？

http://www.telerik.com/help/aspnet-ajax/calendar-on-date-selecting.html

<script type="text/javascript">
function ConfirmChange(sender, eventArgs) {
    var date = eventArgs.get_renderDay().get_date();
    var dfi = sender.DateTimeFormatInfo;
    var formattedDate = dfi.FormatDate(date, dfi.ShortDatePattern);
    eventArgs.set_cancel(!confirm("Are you sure you want to " +
    (eventArgs.get_isSelecting() ? "select " : "unselect ") +
    formattedDate + "?"));
}
</script>

<telerik:RadCalendar ID="RadCalendar1" runat="server">
    <ClientEvents OnDateSelecting="ConfirmChange" />
</telerik:RadCalendar>