AJAX :: JavaScript Is Not Rendered When Usercontrol Is Used

Jan 10, 2011

I have a main page with one update panel

Inside that I have registered usercontrol. within this user control I have written some javascript

This js does not get rendered when page is loaded/opened.

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I just create a js file and write all my codes into it after i added this file to UserControl and after i get this UserControl's html i use $("#DivID").html(UserControlHTML);

Its working now.

Hi everyone;

Im using Ajax and Webservice to load UserControls. Its ok i can easily get the html code of UserControl but there is a problem.

For example UserControl's html code is something like that.

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I'm trying to manually call the ASP.NET (3.5) javascript postback function __doPostBack from my javascript code. The problem is that the postback script block, that is normally rendered right after the beginning of the <form> tag (and the hidden fields), is occasionally rendered near the closing </form> tag. Is there any way to force it to be rendered near the beginning of the form tag? Also, how does ASP.NET decide when/where to render the postback client script block?

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At first, I should confess that I am not sure if it is a good practice or not. I have came out with the idea due to my practice of jQuery.ajax().

What I want to achieve is depended on this design:

//Server Side; an .asmx file contains a method like this:
public string NewContent(string parameter)
string renderedHTML = string.Empty();
case ("person"):
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// some controls in it that has form elements to enter person data
// render control and assign its html to renderedHTML
case ("department"):
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And from the client I want to do this:

// Some html in the page
<script type="text/JavaScript">
function(returnedPanelContent) {

Question is:

How can I make it work? Briefly to have a webservice method that returns different asp.net Panel control content created programmatically so that I can get this control rendered as HTML in my client-side and insert it to my web page?

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I have a UserControl, ASPX page, a Class file and a JS file. In Class file, I have a method for building and registering textbox controls:

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I have a UserControl with two labels and a slider control on it. I have a javascript function that is called when the value of the slider changes, and it is supposed to update the text of the labels. The ascx code is:

asp Code:

<%@ Control Language="vb" AutoEventWireup="false" CodeBehind="AlignSlider.ascx.vb" Inherits="F1TimeTrials.Controls.AlignSlider" %><%@ Register assembly="Infragistics35.Web.v10.2, Version=10.2.20102.1011, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" namespace="Infragistics.Web.UI.EditorControls" tagprefix="ig" %> <script type="text/javascript" id="igClientScript"><!-- function sliderControl_ValueChanged(sender, eventArgs) { var leftLabel = document.getElementById('<%= Me.lblLeftValue.ClientID %>'); var rightLabel = document.getElementById('<%= Me.lblRightValue.ClientID %>'); var maxValue = sender.get_maxValueAsDouble(); var value = eventArgs.get_newValue(); leftLabel.innerHTML = value; rightLabel.innerHTML = maxValue - value; }// --></script> <asp:Table ID="table" runat="server"> <asp:TableRow runat="server"> <asp:TableCell runat="server"> <asp:Label runat="server" ID="lblLeftValue" Text="0" /> </asp:TableCell> <asp:TableCell runat="server"> <ig:WebSlider ID="sliderControl" runat="server" ValueType="Double" > <ClientEvents ValueChanged="sliderControl_ValueChanged" /> </ig:WebSlider> </asp:TableCell> <asp:TableCell runat="server"> <asp:Label runat="server" ID="lblRightValue" Text="100"/> </asp:TableCell> </asp:TableRow></asp:Table>

When I put this control on a page it works just fine. I drag the slider, the labels update with the new values. However, I actually need a large number of these controls on my page (around 10-20 I think), and this is where the problems start. When I change the slider on one of these UserControls, it changes the text of only the labels in the LAST instance of this UserControl on the page. It seems that the 'document.getElementById' function actually searches through the entire page rather than just the one UserControl. How can I fix this? How can I get the two label controls from this current UserControl instance, and not any other instance on the page?

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I have created a User Control with 4 check boxes(server control).I want to allow to check only one checkbox out of four.

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I'm working on an ASP.NET app.I'm using a UserControl for a year calendar.This UserControl has 12 asp.net calendar controls (for the 12 months of a year)

I'm trying to build a jscript function that can access to one (or more) of the 12 month calendar, but I can't access them.


"<asp:Calendar ID="CalendarJanuary" runat="server"></asp:Calendar>"

here's my function

function SetCalendar(controlId) {

document.getElementById(controlId+'_CalendarJanuary').VisibleDate = somedate

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Mar 16, 2011

I have a web form that contains a usercontrol and I would like to be able to access the html elements within the usercontrol from the form page using javascript.

I tried the following:

document.getElementById('<%= usercontrol.clientid %>')

but this returned null.

I had a look around with firebug and found that the tags in the usercontrol render with clientids like usercontrolid_myelement. I'm guessing that something like this might work:

document.getElementById('<%= usercontrol.clientid %>'+'_myelement')

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I have one user control in page, and inside this have UC2 (modal pop up). And I try to achieve this: When I close UC2(modal) i try to update some fields on UC1. And this works fine for one(I have UC2(modal) and on button Save OnClientClick="SaveInfoCI()"), and in UC1 on top of page

function SaveInfoCI() {
= document.getElementById("<%=UC2.GetClientID%>").value; }

but because i reuse this control in another place i want to update another field. Basically now i Have 3 JS function that update 3 fields. And I try when I click save in UC2(modal) I must execute one of this 3 javascript f, to update right field. I don't want to have 3 same UC with only difference in OnClientClick="SaveInfoCI().

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How To Disable Usercontrol Postback If Javascript Is Enabled

Oct 20, 2010

I've searched high and low for some resolution to this problem. Hopefully someone here can explain!!I create a usercontrol that uses .NET web controls, but I want to create a smoother user experience by avoiding full postbacks, so I write some JQUERY to capture click events on the client and in this way do the processing without going back to the server.

$("#tblLedgerEntries :checkbox").click(function () {
var value1 = $(this).closest("tr").find("td.invoiceAmount").html();
var value2 = $('#<%=hdnTotalToPay.ClientID%>').html();
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