ASP.NET不能从后面的代码中将值设置为datepicker [英] ASP.NET Can't set value to datepicker from code behind

问题描述

我有一个日期选择器字段

I have a datepicker field

$(function () {
        $("#dateTextBox").datepicker({
            changeMonth: true,
            changeYear: true
        });

        $("#dateTextBox").datepicker("option", "dateFormat", "dd/mm/yy");
});

在后面的代码中，单击按钮时，我试图将值设置为datepicker字段:

In code behind, on button click, I'm trying to set value to datepicker field:

dateTextBox.Value = date.ToString("dd/MM/yyyy");

但是回发后，文本框为空...

But after postback, textbox is empty...

推荐答案

为实现此目的，您需要使用隐藏字段从客户端读取详细信息.可以在服务器端设置此hiddenfield值.

In order to achieve this, you need to read details from client side using hidden field. This hiddenfield value can be set at server side.

例如:

在页面上创建隐藏字段

<asp:HiddenField id="hdnDate" runat="server" />

在hiddenField中设置日期字符串:

set date string in hiddenField :

protected void button_Clicked (...)
{
     DateTime dt = DateTime.Now;
     hdnDate.Value = dt.Year.ToString() + "," + (dt.Month - 1 ).ToString() + "," + dt.Day.ToString();
}

现在，在document.ready发生jquery事件时，执行此操作

now, on document.ready of jquery event, do this

$(document).ready(function() {
 $("#dateTextBox").datepicker({
        changeMonth: true,
        changeYear: true
    });

  dtString = $("#<%=hdnDate.ClientID%>").val();
  dtString = dtString.split(',');
  var defaultDate = new Date(dtString[0], dtString[1], dtString[2]);
  $("#dateTextBox").datepicker("setDate",defaultDate);

});

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