Write And Execute Textchange Event Handler In Javascript And Code Behind?
Dec 22, 2010
in my asp.net website, i have textbox control inside datagrid control. I would like to add textchange event in javascript where i need to sum the values inside textboxes in datagrid and show that addition in lable outside grid. I would also like to do same addition in codebehind(*.cs) But codebehind only execute when browser not support javascript. It means when browser support javascript only client side javascript should execute not server side code
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Mar 10, 2010
I have buttion on web page and client side java script ConfirmResetPassword() for confirmation message which return true or false
[Code]....
if (confirm("Are you sure you want to reset password of this user?")) {
return true;
}
return false;
}
}with Telerik AjaxSetting[Code]....
<input type="button" name="ctl00$ContentPlaceHolder1$btnResetPassword" value="Reset Password" onclick="javascript:return ConfirmResetPassword();__doPostBack('ctl00$ContentPlaceHolder1$btnResetPassword','')" id="ctl00_ContentPlaceHolder1_btnResetPassword"
/> ?
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Oct 3, 2010
Is there a technical reason for the existence of Page.PreLoad or is this just convenience to have a place where you can neatly place code that always have to be executed before the Load code? Is there a difference between adding code in the PreLoad event handler and adding code at the top of the Load event handler? And what would be a typical scenario where you use PreLoad?
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Jan 24, 2011
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Jul 15, 2010
I Have A TextBox That i want do somthing(i am using it's text) with it's Text Change... onkeyup - onkeypress - onkeydown not help because at first these events fire and then entering character applied(i want to use textbox text in changing it) onchange not help because it is fired on blur. what event should i use or how can i do that?
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Dec 16, 2010
I am working on a feature to throw a warning message if the user has unsaved values in a form. I can see that in the next post there is a explanation about how to do that [URL]now the problem is that i need to do the same but using a ascx control and i don't know where put the next code in my ascx control.
<body onunload="checkSave()">
NB: I'm working on dnn so that i don't have any change to add this code in the parent page of the control.
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Jan 20, 2010
Execute javascript in code behind? can i call javascript like this
For i
As
Integer = 0
To 10
'call javascript code
Next
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Aug 24, 2010
Currently I am implementing code from this example. In my aspx file, I have Label1 and Textbox1 defined. In my aspx.cs file, I am setting the Label1.Text property to a random string in the Page_Load method.
In the .js file I have included, I have:
var Label1, TextBox1;
Sys.Application.add_init(AppInit);
function AppInit(sender) {
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[Code]....
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Feb 22, 2010
I am wondering how to add a javascript event handler using asp.net ajax. I need to add event handlers after ajax update because Jquery plugin to sort tables doesn't work and the onload method to display a screen keyboard does not trigger as well. Is there a way to do that? Maybe I need to switch to some other ajax library or/and try Asp.Net MVC to accomplish?
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Mar 10, 2011
Basically i have two asp.net buttons on my asp.net page as follow:
[Code]....
and this is the code behand fo btnSave onclick event:
[Code]....
and this is the code behand of btnPreviwe onclick event:
[Code]....
as you can see, when the btnSave is clicked, it is programmatically clikced the btnPrevew first, and btnPreview registers and fires the required JavaScript. But actually once the btnSave clicked, it does go to the btnPreview_OnClick event, but for some unknow reasons, the javascript in btnPreview_OnClick doesnt work, however, when i just put cstext2.Append("alert('hi')" instead of cstext2.Append("'SaveSignature()'", the javascript does executed, and also if i modifed the asp.net code for btnPreview to this, it works too.
[Code]....
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Feb 10, 2011
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Jan 22, 2010
i'm a beginner with c# 2.0 and ajax
i have two radio button and i want to execute a javascript if user selected the second radio button
i want execute a javascript if confirm(message)
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Sep 29, 2010
I had a custom confirm box Using Jquery....In that It crates two buttons Yes and No. I need to execute my code in Yes click.....how?
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Jun 11, 2010
I have downloaded a jquery tool which creates overlay windows so here is the code which I want to trigger by calling a javascript function instead of a button or link.
The CSS
[Code]....
The HTML note the overlay is executing when i click the button i want this to be triggered on javascript function)
[Code]....
[Code]....
All i want to do is call a function lets say "ShowOverlay()" from my code behind using ClientRegisterScript() and it should do the same as it is doing on button.
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Jul 22, 2011
how to execute the code behind function using JavaScript keypress ?
The reason is that the keypress that I'm referring to will be used in searching record so I want that every keypress a result will be shown in the gridview immediately.
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Apr 12, 2010
I have a control which has an ImageButton which is tied to an OnClick event... Upon clicking this control, a postback is performed and the event handler is not called. AutoEventWireup is set to true, and I've double checked spelling etc.... We haven't touched this control in over a year and it has been working fine until a couple of weeks ago.
We have made changes to controls which load this control... so I'm wondering, what kind of changes could we have made to stop this event handler from being called? There is quite a bit of Javascript going on, so this could be the culprit too...
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May 10, 2010
I have a drop down in an ASP.NET page. Whenever the value of the drop down changes an ASP.NET AJAX request is made to the server. I also attached a jQuery "change" event handler to that list to execute some code when the value is changed. So, probably two different event handlers are being attached to the same drop down, and it's causing some problems, i.e., sometimes wrong drop down values are sent to the server. I don't know why is this happening but I think attaching two different event handlers to a same drop down may be the reason.
Can anyone tell me what is the problem here? If what I guessed is true, then is there any other way to execute some custom javascript code before asp.net AJAX request is sent ?
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Jun 11, 2010
Executing Server side code using Javascript. Here is the solution.In the Asp.net forums, I often see the question asked, "Can I call server-side code from the client/JavaScript?" Almost invariably, the responses given are "No, the client cannot access the server," or "You can only use WebMethods or PageMethods." The first response is not entirely correct, and unfortunately, WebMethods and PageMethods are static methods and therefore have no way to directly access the page.This is why I present to you the following "hack". I call it a hack because there really should be some way built into the ASP.NET AJAX Extensions that allow this approach directly. Instead, it relies on using controls in a manner that they aren't necessarily intended in order to obtain the desired result. But this "hack" does have a redeeming quality—it's incredibly easy.The Code:
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default2.aspx.vb" Inherits="Default2" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
[code]...
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May 11, 2010
I checked my html page generated by asp.net and I can see this line
Sys.Application.initialize();
Sys.Application.add_init(function() {
$create(AjaxControlToolkit.CollapsiblePanelBehavior,
{
"ClientStateFieldID":"rptActiveQuotes_ctl01_qcQuote_cpeDetails_ClientState",.......
I think it's generated from CollapsiblePanelExtender with name cpeDetails. And I see you can pass number of events to it, wich is now null (third argument). What should I do to set add_ended event there?
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Jul 7, 2010
I have an UpdatePanel with a repeater in it that is re-bound after a user adds an item to it via a modal popup. When they click the button to add a new row to the repeater the code-behind looks something like this:
protected void lbtnAddOption_Click(object sender, EventArgs e)
{
SelectedOption = new Option()
{
Account = txtAddOptionAccountNumber.Text,
Margin = chkAddOptionMargin.Checked,
Symbol = txtAddOptionSymbol.Text,
Usymbol = txtAddOptionUsymbol.Text,
};
Presenter.OnAddOption(); // Insert the new item
RefreshOptions(); // Pull down and re-bind all the items
mpeAddOptionDialog.Hide(); // Hide the modal
// ... Make call to jQuery scrollTo() method here?
}
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I need to find the appropriate row so I can snag the ClientID for it. I need to execute the jQuery snippet from my code-behind that will cause my newly updated repeater to scroll to the right row. I've solved #1. I have a reliable method that will produce the newly added row's ClientID. However, problem #2 is proving to be tricky. I know I can just call ScriptManager.RegisterStartupScript() form my code-behind and it will execute the JavaScript on my page.
The problem I'm having is that it seems that it is executing that piece of JavaScript before (I'm guessing) the newly refreshed DOM elements have fully loaded. So, even though I am passing in the appropriate jQuery line to scroll to the element I want, it is erroring out for me because it can't find that element yet. Here is the line I'm using at the end of the method I posted above:
string clientID = getClientIdOfNewRow();
ScriptManager.RegisterStartupScript(this, typeof(Page), "ScrollScript", String.Format("$("#optionContainer").scrollTo("{0}", 800);", clientID), true);
What do I need to do so I can ensure that this line of JavaScript isn't called until the page with the UpdatePanel is truly ready?
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May 17, 2010
how can I write JavaScript code in asp.net in code behind using C#.
For example, I have click button event when I click the button I want to invoke this java script code:
alert("You pressed Me!");
I want to know how to use java script from code behind.
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Feb 23, 2011
what's textbox.textchange event
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Mar 24, 2011
I get an error when attempting to navigate to the page containing this gridview. The error is
'SelectPackage_Click' is not a member of 'ASP.offer_aspx'.
here my page directive:
[Code]....
Here is my markup. Eventhough SelectPackage_Click is present in the code behind, it is not wired up with the button control.
[Code]....
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Aug 26, 2010
i have a two textbox and i want when i fill 1st textbox 2nd textbox is automatically fill.i will try but it does not work my code is
using
System;
using
System.Collections.Generic;
using
System.Linq;
using
System.Web;
using
System.Web.UI;
using
System.Web.UI.WebControls;
public
partial
class
Default2 : System.Web.UI.Page
{
{
TextBox1.Text =
}
{
TextBox2.Text = TextBox1.Text;
}
}
protected
void Page_Load(object sender,
EventArgs e)"awi";protected
void TextBox1_TextChanged(object sender,
EventArgs e)
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Oct 27, 2010
I have a textbox which is read only and there is a calendar besides the textbox. When the user selects the date in the calendar pop up, the text in the textbox is populated but it doesn't trigger the text change event. trigger an event when the text is changed on the textbox?
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