Im well aware of the fact that the problem im having has been asked and discussed on SO before, but i've read them all countless times and none of them actually helped me solve my problem.
I am working with Visual studio, ASP.NET and C#.
Here's what i want to do exactly:
I have a JQuery dialog with a Label inside of it. I also have a button.
When that button is pressed,i want to jump inside the button's click event and set a text for the label inside the JQuery Dialog. Then i want the dialog to open, displaying the label with the text that has just been set in my button's click handler.
Here's the content that should be in my JQuery dialog (note that i've simplified my code for this question):
<div id="dialog" title="Basic dialog">
<asp:Label ID="Label1" runat="server" ></asp:Label>
</div>
On my page i I have an ASP.NET button, with an onClick event. In the code behind, inside the click event for my button i set the text for Label1.
This is my button:
<asp:LinkButton ID="testButton" runat="server" onClick="button_Click" text="click me"/>
and here's the code behind click handler:
protected void button_Click(object sender, EventArgs e)
{
Label1.Text = "Hello";
}
This actually works, but not as i want it to.
My problem:
For some reason the label's text only gets set the SECOND time i press the button. So that means, the first time i click the button, the dialog opens, displays nothing, then the dialog dissapears and the page posts back. The second time i press the button, i see that the text has been set for the label, but then again the dialog instantly dissapears and the page posts back.
i've tried adding the following to my button: OnClientClick="return false;"
When i do this the postback issue is gone, but now my button's click event doesn't fire.
I've also tried to add the following to my script: event.preventDefault(); This causes the same problem as with the return false;, the page doesn't postback but simply does not jump into the button's click event.
here's my dialog script:
<script>
$(function () {
$('#dialog').parent().appendTo($("form:first"))
$("#dialog").dialog(
{
autoOpen: false,
buttons: {
"Ok": function () {
$(this).dialog("close");
}
}
}
);
$("#testButton")
.button()
.click(function openConfirmDialog() {
$("#dialog").dialog("open")
});
});
</script>
Basically all i want to do is click a button to set a label's text, open a dialog, and keep that dialog open until a user closes it.
I might be missing something, but it amazes me to see how hard it is to do something as simple as i want to do.
kind regards,
Jane
When page is posted back by clicking on button control, dialog is refreshed and closed. You need to implement a way to show dialog box when page is posted back with data within in.
i: In first step create a variable at code behind. e.g
protected string PostBackOption ="";
ii: Add check to set dialog option text when page is post back in page load or page pre render event. e.g
if (Page.IsPostBack)
{
PostBackOption = "$(\"#dialog\").dialog(\"open\");";
}
iii: Now call this variable within javascript as shown below.
<script>
$(function () {
$('#dialog').parent().appendTo($("form:first"))
$("#dialog").dialog(
{
autoOpen: false,
buttons: {
"Ok": function () {
$(this).dialog("close");
}
}
}
);
$("#<%= testButton.ClientID %>")
.button()
.click(function openConfirmDialog() {
$("#dialog").dialog("open")
});
<%=PostBackOption %>
});
Now when you click on click me button, page will postback, after post back dialog will not dis appear and label will be populated with text "hello" properly.
I created a simple example decides whether or not to autoOpen based on your Label containing a value. The dialog goes away due to the page refreshing. You could use UpdatePanels if you wanted to eliminate the whole page posting back, or you could do something like this:
HTML and jQuery:
<!DOCTYPE html>
<html>
<head runat="server">
<meta charset="utf-8" />
<title>jQuery Dialog Demo</title>
<link rel="stylesheet" type="text/css" href="//ajax.aspnetcdn.com/ajax/jquery.ui/1.8.16/themes/cupertino/jquery-ui.css" />
</head>
<body>
<form runat="server">
<div id="dialog" title="Basic dialog" style="display: none;">
<asp:Label ID="Label1" runat="server"></asp:Label>
</div>
<asp:LinkButton ID="testButton" runat="server" onClick="button_Click" text="click me"/>
</form>
<script type="text/javascript" src="//ajax.aspnetcdn.com/ajax/jquery/jquery-1.7.2.min.js"></script>
<script type="text/javascript" src="//ajax.aspnetcdn.com/ajax/jquery.ui/1.8.16/jquery-ui.min.js"></script>
<script type="text/javascript">
var $labelText = $("#Label1").html().trim(),
$dialog = $("#dialog").dialog({
autoOpen: $labelText.length,
buttons: { "Ok": function () { $(this).dialog("close"); } }
});
$("#testButton").button().click(function() {
if ($labelText.length) $dialog.dialog("open");
});
</script>
</body>
</html>
C# CodeBehind:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class test6 : System.Web.UI.Page
{
protected void button_Click(object sender, EventArgs e)
{
Label1.Text = "Current time in ticks: " + DateTime.Now.Ticks.ToString();
}
}
Output:
Your label is already added to the form, no need for adding the dialog to the form. ASP.Net only accepts controls that are put into the <form runat="server"> tag.
Related
i am using bootstrap in my c# asp.net project and i want to show to show the modal popup from code behind.
in my page header i have a javascript function as follows:
function LoginFail() {
$('#windowTitleDialog').modal('show');
}
and on the click of my button i am calling the javascript as follows
ScriptManager.RegisterClientScriptBlock(this, typeof(System.Web.UI.Page), "LoginFail", "LoginFail();", true);
this does not show the modal popup. however, if i use something like alert('login failed'), it works fine.
can anybody please help with this?
By default Bootstrap javascript files are included just before the closing body tag
<script src="vendors/jquery-1.9.1.min.js"></script>
<script src="bootstrap/js/bootstrap.min.js"></script>
<script src="vendors/easypiechart/jquery.easy-pie-chart.js"></script>
<script src="assets/scripts.js"></script>
</body>
I took these javascript files into the head section right before the body tag and I wrote a small function to call the modal popup:
<script src="vendors/jquery-1.9.1.min.js"></script>
<script src="bootstrap/js/bootstrap.min.js"></script>
<script src="vendors/easypiechart/jquery.easy-pie-chart.js"></script>
<script src="assets/scripts.js"></script>
<script type="text/javascript">
function openModal() {
$('#myModal').modal('show');
}
</script>
</head>
<body>
then I could call the modal popup from code-behind with the following:
protected void lbEdit_Click(object sender, EventArgs e) {
ScriptManager.RegisterStartupScript(this,this.GetType(),"Pop", "openModal();", true);
}
This is how I solved:
The Script function
<script type="text/javascript">
function LoginFail() {
$('#windowTitleDialog').modal();
}
</script>
The Button declaration
<asp:Button ID="LaunchModal" runat="server" Text="Launch Modal" CssClass="btn" onclick="LaunchModal_Click"/>
Notice that the attribute data-togle="modal" is not set.
The Server-side code in the LaunchModal_Click event is:
ScriptManager.RegisterStartupScript(this, this.GetType(), "LaunchServerSide", "$(function() { LoginFail(); });", true);
I hope this help you.
I assume, you are using one of jQuery modal plugins. In that case, I suspect, plugin code isn't initialized at the time it is called (which would be immediately after it is rendered into page). You have to postpone call to the function after plugin code is executed. Implementation for your case might look like this:
ScriptManager.RegisterClientScriptBlock(this, typeof(System.Web.UI.Page), "LoginFail", "$(function() { LoginFail(); });", true);
I have the same problem, tried to find online solution but i was unable to do so. I am able to call other javascript funcionts as you said from the code behind but when i add the modal js function the modal does not show up.
My guess is that the modal.('show') function is not being call because when i insepct in crhome the modal element the class is modal hide fade and not modal hide fade IN and other attributes stay the same.
A possible solution is to change those attributes from the code behind, i mean you can do what the js does from the code behind, possible not the best solution but i did not what else to do. By doing this i got the modal to show up with the background grey but could not make the effect to work.
I do this in the aspx page:
<asp:Panel ID="MessagePanel" runat="server" CssClass="hide" EnableViewState="false">
<div class="modal-header">
<asp:Button type="button" ID="btnClose" runat="server" data-dismiss="modal" Text="x" />
</div>
<div class="modal-body">
<h4>What's new in this version</h4>
... rest of bootstrap modal stuff....
</div>
</asp:Panel>
Then in code-behind to show the modal popup on any event such as page.load or a button click I just change the CssClass of the Panel:
MessagePanel.CssClass = "modal fade in"
No need for js or ScriptManager.
I want to know all possible ways to trigger a button in jQuery, I tried this but it's not working,
$("#<%=btA.ClientID%>").trigger('click');
Note: its a ASP.Net button and what I want is to trigger button click so that it will trigger a code-behind click method of buttonA.
Try this
$("#<%=btA.ClientID%>").click();
if it doesn't work try to alert this and check if it is getting accessed by JQ
alert($("#<%=btA.ClientID%>").length);
Have you registered the event with jquery in following manner
$(function(){
$("#<%=btA.ClientID%>").click(function(){
// your logic here
});
});
One more thing to confirm, are you loading this button directly on page load or you are having some page update panel which load it afterwords?
If yes then you should bind the event to button in following manner
$(document).on('click',"#<%=btA.ClientID%>", function() {...});
$("#<%=btA.ClientID%>").click();
Or
$("input[id$='yourbuttonId'").click();
Reason that trigger not working is Jquery only allow you to trigger a click that Jquery has created. Use the trigger route after you have written a click listener.
Its beats me since it should be a very straightforward thing. I actually just tried it out and it worked without a hitch. Here is my markup:
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function () {
$("#<%=btA.ClientID%>").trigger('click');
});
</script>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="lbA" runat="server"></asp:Label>
<asp:Button ID="btA" runat="server" OnClick="btA_Click" Text="Click Me!" />
</div>
</form>
</body>
</html>
... and I have this method in my code behind:
protected void btA_Click(object sender, EventArgs e)
{
lbA.Text = "Hello World!";
}
When the application runs, it triggers the click event of the btA button fires immediately and the Hello World! text is rendered on the label. Check if you could be missing something.
$("#<%=btA.ClientID%>").click();
I believe this is the only other way.
May be you are trying to wire the event,when the control itself is not loaded on to the page.
Try this instead.It buys a little bit of time and then wires up the event.
setTimeout(function () {
$("#<%=btA.ClientID%>").trigger('click');
}, 10);
I always make ClientIdMode="static" so that you can easily call the element with the same id you configured in the page..
So you dont hvae to use ClientID.. More over you cant use asp.net code in a separate js file.
$("#<%=btA.ClientID%>").trigger('click');
to
$("#btA").click();
Asp button is not working in a jquery dialog box:
<script type="txt/js">$(function () {$('#<%= ButtonEmail.UniqueID %>').button();});</script>
<div id="dialog-modal" title="Cadastro">
<p>Digite seu email para que eviemos o link do cadastro para ele:</p>
<p><asp:TextBox ID="TextBoxEmail" CssClass="ui-corner-all" runat="server"></asp:TextBox>
<asp:Button ID="ButtonEmail" runat="server" Text="Enviar Link" onclick="ButtonEmail_Click" /></p>
<div><asp:Label ID="LabelEmail" runat="server" Text="teste"></asp:Label></div>
</div>
c# code:
protected void ButtonEmail_Click(object sender, EventArgs e)
{
...
}
even when a delete this: $(function () {$('#<%= ButtonEmail.UniqueID %>').button();}); dont work, the button stays with the original design, but dont work
Use this
<script type="text/javascript">
$(function () {
$('#<%= ButtonEmail.ClientID %>').button();
});
</script>
Please note the ClientID which replaced UniqueId. Also ensure that the dependent scripts are loaded (There should be no javascript errors).
After reading some of the comments on the other answer, I'm starting to wonder if possibly it's your server side click event which is not working? In that case you're probably going to have to provide more information and code.
To make an asp.net server side click work in a dialog, ensure that the dialog is part of the form (after its been made into a dialog by jquery. Details are here. jQuery UI Dialog with ASP.NET button postback
may be something like this
var buttonId = <%= ButtonEmail.UniqueID %>;
$(function () {$('#' + buttonId).button();});
On a ASP.Net page, I am in front of a problem only with IE. Here is the description.
On a page, there is two buttons and one label. The first button is visible and calls a JS function on the click event. This JS function calls the click function of the second button. The second button has an C€ event handler on the click event. The C# event handler edit the label.
In Firefox : the label is correctly edited after the clicks.
In IE (8) : the label is not edited, despite the C€ event handler has been correctly hit.
Also, I observed, in IE, that the Page_Load event is called two times after the JS button click :
Page_Load
button2_OnClick => change of the Label Text
Page_Load => The Label Text is reset :(
In Firefox, the Page_Load is called only once.
My question is : how to make IE refresh correctly the page as Firefox does after a JS button click ?
Below is the sample test code :
1) Page ASPX
<head runat="server">
<title></title>
<script type="text/javascript">
function button1Click(sender, args) {
var button2 = document.getElementById("button2");
button2.click();
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button runat="server" ID="button1" Text="Click-me!" OnClientClick="button1Click();" />
<asp:Button runat="server" ID="button2" Text="Second" OnClick="button2_OnClick" style="display:none" />
<p />
<asp:Label runat="server" ID="label1" Text="Init" />
</div>
</form>
</body>
</html>
2) C# code-behind :
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void button2_OnClick(object sender, EventArgs e)
{
label1.Text = "Changed";
}
}
The ID of your button will not be button1 or button2 when it's rendered. It will probably be something like ctl001_button1. Therefore your javascript will not work. In ASP.NET 4 you can override this behaviour by using an assigned ClientID.
<asp:Button runat="server" ID="button1" Text="Click-me!"
OnClientClick="button1Click();" ClientIDMode="Static" />
<asp:Button runat="server" ID="button2" Text="Second"
OnClick="button2_OnClick" style="display:none" ClientIDMode="Static" />
As an aside, this alludes to the main problem with ASP.NET Winforms - it tricks developers into thinking that the web is a connected environment.
What actually happens when you click an <asp:Button /> element by default is that a postback is invoked. I.e. Your browser sends a request to the server for a new page. It sends up something called ViewState which is how the server knows what you've done and what to render. There is no "event" handled as such.
I think the problem is with the way you are trying to get the hidden button
var button2 = document.getElementById("button2");
maybe change this to
var button2 = document.getElementById("<%= button2.ClientID %>");
After the buttons are rendered in the browser, the ID is changed by the ASP.Net engine, and not the same as your source.
http://msdn.microsoft.com/en-us/library/system.web.ui.control.clientid.aspx
Hope this helps.
I am new to JQuery and trying to display a Yes/No confirmation dialog box when the user clicks on an aspx button. When the dialog box gets displayed to the user he can click the Yes or No button and depending upon the user action i want to execute different code present in code behind file i.e. in aspx.cs
I have tried with the following code but not succeded in my objective.
Code present in aspx page:
<link href="jquery-ui-1.8.10.custom.css" rel="stylesheet" type="text/css" />
<script src="jquery-1.4.4.min.js" type="text/javascript"></script>
<script src="jquery-ui-1.8.10.custom.min.js" type="text/javascript"></script>
<script>
jQuery(document).ready(function() {
jQuery("#myButton").click(showDialog);
//variable to reference window
$myWindow = jQuery('#myDiv');
//instantiate the dialog
$myWindow.dialog({
autoOpen: false,
width: 400,
modal: true,
resizable: false,
buttons: {
"Yes": function() {
},
"No": function() {
$(this).dialog("close");
}
}
});
}
);
//function to show dialog
var showDialog = function() {
//if the contents have been hidden with css, you need this
$myWindow.show();
//open the dialog
$myWindow.dialog("open");
}
//function to close dialog, probably called by a button in the dialog
var closeDialog = function() {
$myWindow.dialog("close");
}
</script>
<form id="testconfirmJQ" name="testconfirmJQ" runat="server">
<fieldset>
<legend>jQuery UI Modal Submit</legend>
<p><label for="email">E-mail:</label><br />
<input id="emailJQ" type="text" name="emailJQ" value="" /></p>
<p>
<asp:Button ID="myButton" runat="server" Text="Button" onclick="myButton_Click" />
</fieldset>
</form>
<div id="myDiv" title="Verify Form jQuery UI Style"><p><span class="ui-icon ui-icon-alert" style="float:left; margin:0 7px 0 0;"></span> You entered your e-mail address as:</p><p id="dialog-email"></p><p>
If this is correct, click Submit Form.</p><p>To edit, click Cancel.<p></div>
</form>
In code behind the event handler is empty for now. Any suggestions will be appreciated!
Take out the onclick attribute of asp:button. There should be no need for it -- you are not doing server side actions.
You could also change it to an <input> of type button.
Since jQuery is client side and you want to execute server side code in your .aspx.cs file, you could try saving a value indicating what the user responded to the prompt and they doing a postback so the server side can execute the appropriate code.
You might look into using the Button.OnClientClick Property which can execute client side code before the postback. Still use the jQuery dialog box.