CalendarExtender On TextChange

Posted on 2009-07-08
Last Modified: 2012-05-07
I would like to use the AJAX CalendarExtender. Is it possible to attach a C# event which will fire when the date is chaneg.
Question by:Mr_Shaw
LVL 20

Accepted Solution

ddayx10 earned 500 total points
ID: 24810375
This isn't exactly what you asked for, but it's as close as I can get'cha :)

Can use client functional of CalendarExtender to send info to postback, and do something from there. See Snippet...
***ASPX PAGE****

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

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">

<html xmlns="">

<head runat="server">

    <title>Cal Extender Event</title>

    <script type="text/javascript">


		function selectionChanged(sender,args)


			//just about all calendar properties, etc are avail by using


			//If you wanted to send back a more complex argument then I have used

			//Sys.Serialization.JavaScriptSerializer to package them up

			//then de-serialize on the server side :)







    <form id="form1" runat="server">

		<asp:ScriptManager ID="sm" runat="server" />


		<asp:TextBox ID="txtCal" runat="server" />

		<asp:Button ID="btnCal" runat="server" Text="Show Calendar" />






			OnClientDateSelectionChanged="selectionChanged" />





public partial class Default7 : System.Web.UI.Page


    protected void Page_Load(object sender, EventArgs e)


        if (IsPostBack)


            string eTarget = Request.Params.Get("__EVENTTARGET");

            string eArg = Request.Params.Get("__EVENTARGUMENT");

            if (!string.IsNullOrEmpty(eTarget) && !string.IsNullOrEmpty(eArg))


                doStuff(eTarget, eArg);




    private void doStuff(string cTarget, string cArg)


        //do something



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ID: 31601215

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