How to retain Date value in ajaxcontrol extender on Postback

Dear Friends,
i am using some date controls like start Date & End Date in my Web Form with Ajax Calendar extender,
but somehow on DropDown Postback event the value inside the Date controls gets lost and i have to re-enter the value again which is not good as per User.
and dont want user to edit the date controls only select the particular Date...so it should be read Only(non-Editable).

Pl reply,

Regards,
Aamir

Hi ,
If the target TextBox is set as ReadOnly, the value would be empty when post back. you can use a HiddenField to save the selected date value and then assign it to TextBox in client page load event. Please refer this code:

<%@ Page Language="C#" AutoEventWireup="false" CodeBehind="TestSaveDateAfterPostBack.aspx.vb"
    Inherits="CalendarUserControl.TestSaveDateAfterPostBack" %>


<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>

 xmlns="http://www.w3.org/1999/xhtml">
 runat="server">
    


     type="text/javascript" language="javascript">
        function pageLoad() {
            if ($get("HiddenField1").value != "") { $get("TextBox1").value = $get("HiddenField1").value; }
        }


        function clientChanged(sender, args) {
            $get("HiddenField1").value = sender._selectedDate.format(sender._format);
        }
    




     id="form1" runat="server">
    
         ID="ScriptManager1" runat="server" />
         ID="up1" runat="server">
            
                ReadOnlyText:
                 ID="TextBox1" runat="server" ReadOnly="true">
                 ID="CE" runat="server" Enabled="True" TargetControlID="TextBox1"
                    PopupButtonID="ImageButton1" Format="MM/dd/yyyy" OnClientDateSelectionChanged="clientChanged" />
                 ID="ImageButton1" runat="server" />
                 ID="HiddenField1" runat="server" />
                 />
                 ID="Button1" runat="server" Text="PostBack" />