tags:

views:

6173

answers:

3
+3  Q: 

jquery datepicker ms ajax updatepanel doesn't work after post back

Hi all,

So I did some reading of the related questions and had some interesting stuff but did not find my answer, at least did not understand the answer.

I am very new to AJAX, javascript and sclient side scripting in general.

I have been using C# asp.net for a bit and recently added some updatepanels to my side to smooth so of the user controls and bits being updated so that the page was not reloaded each time. All works brilliantly and I was very happy with it till I decided to try and use some JQuery.

I have picked up the datepicker from ui.jquery.js which is cool and works great on a normal page. My problem arrives when I do a postback from within an updatepanel. The datepicker just stops working.

from what I have read I need to manually wire this back up after the post back.

1) I don't really understand why. on my master page I have:

<script type="text/javascript">
    $(function() {
        $(".mydatepickerclass").datepicker({dateFormat: 'dd-mm-yy'});
    });
</script>

which picks up my input boxes with the mydatepickerclass assigned. and all works. Why would this stop working on the postback.

2) How do I fix this.... how do I wire it up so that after a postback in an updatepanel it still works.

I understand that the ID might change on a postback, I think but as I am using classes I don't know what is going wrong.

edit

I have the following code in my usercontrol where the update is happening:

<asp:UpdatePanel ID="HistoryUpdatePanel" runat="server">
<ContentTemplate>
    <%-- Start of Company History section --%>
    <fieldset>
        <legend>Activity History</legend>

           <script type="text/javascript">
              $(function() {
              $(".mydatepickerclass").datepicker({dateFormat: 'dd-mm-yy'});
              });
           </script>            

        <div>
            <asp:ListBox ID="listBoxHistoryTypes" runat="server" SelectionMode="Multiple" AutoPostBack="true" OnSelectedIndexChanged="listBoxHistoryTypes_IndexChanged" />
            <label>Date From:</label><asp:TextBox class="mydatepickerclass" ID="txtdatefrom" runat="server" />
            <label>Date To:</label><input class="mydatepickerclass" type="text" />
            <asp:TextBox class="mydatepickerclass" ID="txtdateto" runat="server" />
            <asp:Button ID="btnFilterSearch" runat="server" Text="Filter Results" OnClick="btnFilterSearch_Click" />
        </div>


    </fieldset>
</ContentTemplate>

Does the script inside the updatepanel not rewire it?

Thanks

Jon Hawkins

+11  A: 

the update panel is going to reload the contents of the html. You'll have to listen for the UpdatePanel to complete and recreate the datepicker.

Here is a very basic sample. This doesn't take into account multiple update panels on your page or potential memory leaks from not properly destroying your datepicker.

Another thing to note when mixing ASP.NET Ajax and jQuery be careful because the both use the $ in different contexts

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;
<html xmlns="http://www.w3.org/1999/xhtml"&gt;
<head runat="server">
    <title></title>
    <script type="text/javascript" src="http://jqueryjs.googlecode.com/files/jquery-1.3.1.js"&gt;
    </script>
    <script type="text/javascript">
        $(document).ready(function() {
            Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);

            function EndRequestHandler(sender, args) {
                $('.mydatepickerclass').datepicker({ dateFormat: 'dd-mm-yy' });
            }

        });
    </script>   
</head>
<body>
    <form id="form1" runat="server">
    <div>

    </div>
    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server">
        <ContentTemplate>
            <asp:TextBox ID="TextBox1" runat="server" CssClass="mydatepickerclass"></asp:TextBox>
            <br />
            <asp:Button ID="Button1" runat="server" Text="UpdateMe" 
                onclick="Button1_Click" />
        </ContentTemplate>
    </asp:UpdatePanel>
    </form>
</body>
</html>
bendewey  2009-02-06 15:20:25
how would I go about this?
Jon  2009-02-06 15:35:40
added a sample. It's concatenating thou.
bendewey  2009-02-06 15:38:28
It worked with your suggestion. Thank you.. Don't really understand it, will have to research what you have given but thank you :)
Jon  2009-02-06 16:19:25
A: 

This is very useful except that results are odd if there is more than on ajax panel containing a datepicker on the page. All of the date-pickers get wired to one of the text boxes. Is there a solution to this too?

Kath Stennett  2009-10-23 11:07:43
A: 

This is wonderful.. It worked great.. I was thinking about going back on the jquery calendar and this really helped me to stay back on this.. Thanks a lot bendewey

Praveen nair  2010-09-09 20:43:06

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