I am using jquery UI modal popup to show user login form.
The script adds html elements around the form to build the popup.
When i submit the login form - the textboxes appear to be empty in the code behind, even though I have entered the value in it.
I think it is because the input is moved from the original position it was rendered, thus the code somehow validates the request.
Question is: Is there a way to make the values pass thru any way? Or to disable this validation?
Example of code:
HTML:
<%# Page Language="C#" AutoEventWireup="true" CodeFile="UI-login.aspx.cs" Inherits="tests_UI_login" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<script src="/js/jquery-1.6.4.min.js" type="text/javascript"></script>
<script src="/js/jquery-ui-1.8.8.custom.min.js" type="text/javascript"></script>
<link href="/css/custom-theme/jquery-ui-1.8.16.custom.css" rel="stylesheet" type="text/css" />
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<script type="text/javascript">
Sys.Application.add_load(function (sender, args) {
// Dialog
$('#loginDialog').dialog({
autoOpen: true,
width: 600,
resizable: false,
modal: true,
show: 'slide',
hide: 'slide'
});})
</script>
<div id="loginDialog">
<asp:TextBox ID="txtEmail" runat="server"></asp:TextBox>
<asp:LinkButton ID="btnLogin" runat="server" onclick="btnLogin_Click1">Login</asp:LinkButton>
</div>
</form>
</body>
</html>
C# :
public partial class tests_UI_login : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnLogin_Click1(object sender, EventArgs e)
{
string email = txtEmail.Text; //Here the value is empty
}
}
To get the values of the inputs in the code behind and access them through the server controls mechanism (textBox.Text), their state (and presence) needs to be persisted in the ViewState. Since you are building them with javascript, their state is not persisted, the only way you can get their values is using the Request.Form collection.
As usual, posting the relevant code, may produce more specific answers.
<body>
<div id="loginDialog">
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:TextBox ID="txtEmail" runat="server"></asp:TextBox>
<asp:LinkButton ID="btnLogin" runat="server" onclick="btnLogin_Click1">Login</asp:LinkButton>
</form>
<script type="text/javascript">
Sys.Application.add_load(function (sender, args) {
// Dialog
$('#loginDialog').dialog({
autoOpen: true,
width: 600,
resizable: false,
modal: true,
show: 'slide',
hide: 'slide'
});
})
</script>
</div>
</body>
I did something like above it works. I kept form1 inside dialog.
Actually there are several issues, quickest solution would be to use an existing plugin, like the jQuery Form Plugin.
I found the solution. Just add the dialog to the form.
See http://labs.kaliko.com/2011/08/jquery-ui-dialog-aspnet-postback.html
Update 1:
To make all happy, the solution is to register the modal into the form:
var myDialog = jQuery("#myDialog").dialog({ width: 480, height: 400 });
myDialog.parent().appendTo(jQuery("form:first"));
Related
I have a simple web form with a single button:
<%# Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="DemoWeb.Default" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script src="https://unpkg.com/showmodaldialog"></script>
<script>
function showPopup() {
var ret = window.showModalDialog("Popup.aspx");
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
</div>
</form>
</body>
</html>
How do I make that button open Popup.aspx with ShowModalDialog Polyfill from https://github.com/niutech/showModalDialog?
I tried Default.aspx.cs like this:
using System;
namespace DemoWeb
{
public partial class Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Button1.Attributes.Add("OnClick", "showPopup()");
}
protected void Button1_Click(object sender, EventArgs e)
{
}
}
}
It works in IE with old showModalDialog, but in Chrome popup appears and immediately disappears.
Well, if you button click is to run server side code, then you get a full page post back, and that will re-load the page.
But, you CAN have that asp.net button call 100% browser side code and NOT run the button click event stub on the server.
You can use this format:
<form id="form1" runat="server">
<div>
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" OnClientClick="showpopup()";return false;" />
</div>
<script>
function showpopup() {
var ret = window.showModalDialog("Popup.aspx");
}
</script>
</form>
So, when you click on the asp.net button, it will call the client side function. (you use OnClientClick(). Also, we added a return false to that click event, and this will prevent the server side Button1_Click event from running. However, you can have the js code return true or false, and if the routine returns true, then the button_click (server side) code will run, but if your js returns false, then the server side event code will not run.
Also, showModalDialog has been REMOVED from most browsers. So it will not work. I suggest you adopt jQuery and also adopt jQuery.ui, and use that to pop up a dialog.
Also if a browser STILL DOES support showModalDialgo (and it HAS been removed), even if it worked, then 99% of popup blocks which now even browsers have turned on by default will block anyway.
So, to run the above with jQuery and also jQuery.ui, then your code to pop up the dialog will become this:
<form id="form1" runat="server">
<asp:Button ID="Button1" runat="server" Text="Button" Width="94px" OnClientClick="showpage();return false;" />
<br />
<br />
<div id="poppagearea">
</div>
<br />
<script>
function showpage() {
var mydiv = $('#poppagearea');
mydiv.dialog({
autoOpen: false, modal: true, title: 'My cool other page', width: '30%',
position: { my: 'top', at: 'top+150' },
buttons: {
'ok': function () {
mydiv.dialog('close');
// code here for ok click alert('user click ok');
},
'cancel': function () {
mydiv.dialog('close');
// code here for a cancel click alert('user click cancel');
}
}
});
}
</script>
</form>
So you CAN use a alert(); in pure js, or you can prompt the user with a confirm('do you want to do this'). But if you want to pop up a dialog - especially another page, then I would quite much suggest that jQuery and jQuery.UI are the way to go here.
Polyfill won't work with a server side control. Replace your asp button with an input type="button" and add the click event using addEventhandler with async and await. Control flow should stop on ShowModelDialog call then and will resume when you close the popup.
I created jquery popup dialog and asp.net dropdownlist control in my aspx page.
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js" type="text/javascript" ></script>
<script src="//code.jquery.com/ui/1.10.0/jquery-ui.js" type="text/javascript" ></script>
<script type="text/javascript">
$(document).ready(function () {
$('#div_popup').dialog({
resizable: true,
height: 300,
width: 300,
position: 'center',
zIndex: 10000
});
});
</script>
<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.0/themes/base/jquery-ui.css" type="text/css" />
<style type="text/css" >
#div_dropdownlist
{
margin-left : 50%;
margin-top : 50%;
z-index: -1;
}
#div_popup
{}
</style>
</head>
<body>
<form id="form1" runat="server">
<div id="div_dropdownlist">
<asp:DropDownList runat="server" ID="ddlList" Width="200px"></asp:DropDownList>
</div>
<div id="div_popup">
My test Popup
</div>
</form>
</body>
</html>
My purpose is to show jquery dialog popup over every other controls when you drag it over other controls.
Everything work well in every browsers but IE6.
I tried css zIndex. But it has no effect in IE6.
So, please let me know how I can make it correct in IE6.
Updated
I changed my div popup style to
#div_popup
{
z-index: 10000;
}
and I had changed my jquery dialog css style to
$('#div_popup').dialog({
...
zIndex: 10000
});
But in IE6, that jquery popup cannot display over asp.net dropdown list box when I drage over that control.
For your reference , here is my_source_code.
As mentioned in http://coding.smashingmagazine.com/2009/09/15/the-z-index-css-property-a-comprehensive-look/
There is an ie bug and the select boxes shows on top.
I would hide the select box as suggested or use an shim for ie6.
I test jQuery and ASP.NET with Webcontrols and in my test load the Side everytime new if I click on the Button. The jQuery Code add a Css Class to a Label.
My aspx:
<%# Page Language="C#" AutoEventWireup="true" CodeBehind="Main.aspx.cs" Inherits="jQueryAnwendung.Main" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>jQuery Anwendung</title>
<script src="Scripte/jquery-1.8.0.min.js" type="text/javascript"></script>
<style type="text/css">
.CssKlasse
{
background:red;
font-size:40px;
}
</style>
<script type="text/javascript" language="javascript">
$(document).ready(function () {
$("#<%= b1.ClientID%>").click(function (event) {
$("#<%= bild1.ClientID %>").slideToggle('slow');
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="b1" runat="server" text="Bild verkleinern/vergrößern"/>
<asp:Image ID="bild1" runat="server" ImageUrl="~/Theme/net.png" Width="50" Height="50" />
</div>
</form>
</body>
</html>
What can I do?
tarasov
inside your handler, prevent the button from behaving normally:
$("#<%= b1.ClientID%>").click(function (event) {
event.preventDefault(); //prevent the control to act in its default way
$("#<%= bild1.ClientID %>").slideToggle('slow');
});
Asp button causes Post back when you click it - page reloads and your script is not executed, you can use HTML button instead or try to disable postback on this button.
if you using asp controls you have 2 ways to handle it
First is change "#b1 and "#l1" to "<%= #b1.ClientID%>" and "<%= #l1.ClientID %>" in your jQuery function
Second is to add attribute ClientIDMode="Static" to your asp:Button and asp:Label
The generated id is more verbose; open your browser and click View source. You will notice it. Copy and paste the ID into your jQuery selector.
Another way is to call b1.clientID inside your .aspx: $("<%= b1.ClientID %>"), which will output the generated clientID at runtime.
Since ASP.NET 4, StaticMode allows you to have complete control over the generated ID. For more information, check it out: http://msdn.microsoft.com/en-us/library/system.web.ui.control.clientid.aspx
I am trying to set the disabled property for my CheckBox to true. However, when I do a postback the CheckBox is still enabled?
HTML:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
<head runat="server">
<title></title>
<script>
$(document).ready(
function () {
$("#CheckBoxList1_0").attr('disabled',true);
}
);
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:CheckBoxList ID="CheckBoxList1" runat="server">
<asp:ListItem>een</asp:ListItem>
<asp:ListItem>twee</asp:ListItem>
<asp:ListItem>drie</asp:ListItem>
</asp:CheckBoxList>
</div>
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
</form>
</body>
</html>
c#:
protected void Button1_Click(object sender, EventArgs e)
{
if (!CheckBoxList1.Items[0].Enabled)
{
Response.Write("it is disabled");
}
}
CSS properties like disabled added with jQuery, or added in any way for that matter, will not post to the server when you do a postback.
If you really need to keep track of which checkboxes are disabled, one way to accomplish this would be to store those elements' ids into a hidden input, the value of which will post to the server.
Something like this should work
<input type="hidden" runat="server" id="yourHiddenInput" />
$("form").submit(function(){
var allIds = [];
$("input[type='checkbox']:disabled").each(function() {
allIds.push($(this).attr("id"));
});
$("#yourHiddenInput").val(allIds.join());
//form is about to post. When it does,
//you'll be able to read the ids via yourHiddenInput.Value
});
When you change the checkbox using javascript that change is on the client only, I believe that the viewstate information for the checkbox won't be updated and so when the postback occurs as far as the page knows the checkbox is still unchecked
I have the following ASPX page:
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title></title>
<script src="js/jquery-1.2.6.min.js" type="text/javascript"></script>
<script src="js/jquery-ui-1.6.custom.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function() {
$("#dialog").dialog({
bgiframe: true,
autoOpen: false,
height: 300,
modal: true,
buttons: {
'Ok': function() {
$(this).dialog('close');
__doPostBack('TreeNew', '');
},
Cancel: function() {
$(this).dialog('close');
}
},
close: function() {
;
}
});
});
function ShowDialog() {
$('#dialog').dialog('open');
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="TreeNew" runat="server" Text="Nuevo" OnClientClick="ShowDialog(); return false;"/>
<asp:Label ID="Message" runat="server"></asp:Label>
<div id="dialog" title="Create new user">
<p id="validateTips">All form fields are required.</p>
<asp:RadioButtonList ID="ContentTypeList" runat="server">
<asp:ListItem Value="1">Text</asp:ListItem>
<asp:ListItem Value="2">Image</asp:ListItem>
<asp:ListItem Value="3">Audio</asp:ListItem>
<asp:ListItem Value="4">Video</asp:ListItem>
</asp:RadioButtonList>
</div>
</div>
</form>
</body>
</html>
When the user click on TreeNew button appears the modal dialog, then he/she choose an option an click Ok button to do a postback.
I need that the server side execute TreeNew_Click method: How can I do that?
If I use __doPostBack('TreeNew', '') it throws me the following error: "Object expected".
UPDATE:
I found the origin for the error: the function __doPostBack is not defined. I'm not going to delete the question because I think Chris Clark's answer is so interesting.
As a rule, if you find yourself ever typing the text "__doPostBack(...", you should re-evaluate your approach.
In this case, you should just put a server-side asp.net button inside the div that you are turning into the dialog and use that instead of the generates jQuery button. That way the postback code will get wired up for you. There is one caveat however - when jQuery turns your div (I'm going to assuming it's a div) into a dialog, it rips the div out of the form element. That means you have to attach it BACK to the form BEFORE the postback occurs. You can do that in the close function of the dialog. The postback will then occur properly.
If you really want to use the generated jQuery OK button, you have a couple of options. First, you can slap a server-side asp.net button on the page and hide it, then call the asp.net button's click event from the OK button's code. Second, you can emit a javascript function form the server using Page.ClientScript.GetPostBackEventReference that will contain the __doPostBack code that you were trying to hand-write above. Then call that emitted function from the OK button's JS code.