Can’t find variable __doPostBack - javascript

Im programming my first asp.net website
To work on iPhone safari.
My code in default.aspx body :
<div id="pnlLogin" class="panel" selected="true" >
<h2>Login Details</h2>
<form ID="fLogin" runat="server" class="panel" selected="true" >
<fieldset>
<div class="row">
<label>Name</label>
<asp:TextBox id="txtUserName" runat="server" placeholder="Your username" />
</div>
<div class="row">
<label>Password</label>
<asp:TextBox id="txtPassword" textmode="Password" runat="server" placeholder="Your password" />
</div>
</fieldset>
<asp:LinkButton id="btnLogin" class="whiteButton" text="Log me in!" runat="server" onclick="Login_Clicked" />
</form>
</div>
In backend .cs file of default.aspx :
protected void Login_Clicked(object sender, EventArgs e)
{
var username = txtUserName.Text;
var password = txtPassword.Text;
if (username == "masi" && password == "pass")
{
Response.Redirect("ControlPanel.aspx");
}
}
Full Page Source from DESKTOP Safari :
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head><title>
Cover Plus
</title><meta id="viewport" name="viewport" content="width=device-width, user-scalable=0, initial-scale=1.0" /><link href="iui/iui.css" rel="stylesheet" type="text/css" /><link title="default" href="iui/t/default/default-theme.css" rel="stylesheet" type="text/css" />
<script type="application/x-javascript" src="iui/iui.js"></script>
<link rel="apple-touch-icon" href="img/touch-icon-iphone.png" /><link rel="apple-touch-icon" sizes="72x72" href="img/touch-icon-ipad.png" /><link rel="apple-touch-icon" sizes="114x114" href="img/touch-icon-iphone4.png" /><link rel="apple-touch-startup-image" href="img/startup.png" />
<script type="text/javascript">
function login()
{
var isVerified = Verify();
if (isVerified) {
ident.setAttribute("placeholder", "valid");
}
}
</script>
</head>
<body>
<div class="toolbar">
<h1 id="pageTitle">Login</h1>
</div>
<div id="pnlLogin" class="panel" selected="true" >
<h2>Login Details</h2>
<form method="post" action="Default.aspx" id="fLogin" class="panel" selected="true">
<div class="aspNetHidden">
<input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" />
<input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="" />
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUKLTY2NzcyMzEwM2Rk+CbfIXzzsip63MXaBjBxcQhbraDzpmAHkc6FH4cZIiE=" />
</div>
<script type="text/javascript">
//<![CDATA[
var theForm = document.forms['fLogin'];
if (!theForm) {
theForm = document.fLogin;
}
function __doPostBack(eventTarget, eventArgument) {
if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
theForm.__EVENTTARGET.value = eventTarget;
theForm.__EVENTARGUMENT.value = eventArgument;
theForm.submit();
}
}
//]]>
</script>
<div class="aspNetHidden">
<input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="/wEWBALC/9DxDQKMrfuqAgKOsPfSCQKRnIq9D4GV4RtvQeooslP0bkLhJVOPoPu6Gt6b0rGrW9P8fPbK" />
</div>
<fieldset>
<div class="row">
<label>Name</label>
<input name="ctl00$MainContent$txtUserName" type="text" id="MainContent_txtUserName" placeholder="Your username" />
</div>
<div class="row">
<label>Password</label>
<input name="ctl00$MainContent$txtPassword" type="password" id="MainContent_txtPassword" placeholder="Your password" />
</div>
</fieldset>
<a id="MainContent_btnLogin" class="whiteButton" href="javascript:__doPostBack('ctl00$MainContent$btnLogin','')">Log me in!</a>
</form>
</div>
</body>
</html>
Problem :
It works fine on desktop safari/chrome, I type masi/pass and press the button and goes to new page, but on iPhone it gives me a javascript error in the console and does nothing.
it says :
Javascript: Error
undefined
ReferenceError: Can't find variable: __doPostBack
I am completely clueless as to what to do.
Update - Solution:
I randomly deleted the little bit of javascript I had in the header (that did next to nothing) and now its working fine.

The problem is the default way ASP.net treats unknown browsers... such as the iPhone. Even though it would be nice to assume unknown browsers could use javascript... you can specify what capabilities that a browser has in the section of web.config or machine.config.
Check out http://slingfive.com/pages/code/browserCaps/ for an updated browsercaps config file for asp.net
Here is an example of a case to match GECKO Based Browsers (Netscape 6+, Mozilla/Firefox, ...)
Reference: this question and answer.
<case match="^Mozilla/5\.0 \([^)]*\) (Gecko/[-\d]+)(?'VendorProductToken' (?'type'[^/\d]*)([\d]*)/(?'version'(?'major'\d+)(?'minor'\.\d+)(?'letters'\w*)))?">
browser=Gecko
<filter>
<case match="(Gecko/[-\d]+)(?'VendorProductToken' (?'type'[^/\d]*)([\d]*)/(?'version'(?'major'\d+)(?'minor'\.\d+)(?'letters'\w*)))">
type=${type}
</case>
<case> <!-- plain Mozilla if no VendorProductToken found -->
type=Mozilla
</case>
</filter>
frames=true
tables=true
cookies=true
javascript=true
javaapplets=true
ecmascriptversion=1.5
w3cdomversion=1.0
css1=true
css2=true
xml=true
tagwriter=System.Web.UI.HtmlTextWriter
<case match="rv:(?'version'(?'major'\d+)(?'minor'\.\d+)(?'letters'\w*))">
version=${version}
majorversion=0${major}
minorversion=0${minor}
<case match="^b" with="${letters}">
beta=true
</case>
</case>
</case>

Related

Trying to redirect page after login validation using javascript and html, won't work

So just starting coding in html and js, need some help as to why the page isn't redirecting after validation. The page just resets after logging in, and i'm trying to get it to redirect to login.html. Any help please?
DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<title>Task Manager</title>
<link rel="stylesheet" href="style.css">
<script src ="login.js"> </script>
</head>
<body>
<div class="center">
<h1>Task Manager</h1>
<form method="post">
<div class="txt_field">
<input type="text" required name="" id="username">
<span></span>
<label>Username</label>
</div>
<div class="txt_field">
<input type="password" name="" id="password">
<span></span>
<label>Password</label>
</div>
<div class="pass">Forgot Password?</div>
<input type="submit" name="" value="Login" onclick="validate()">
<div class="signup_link">
Not a member? Signup
</div>
</form>
</div>
</body>
</html>
Javascript:
function validate()
{
var username=document.getElementById("username").value;
var password=document.getElementById("password").value;
if(username=="admin"&& password=="user")
{
alert("login succesfully");
window.location.href = "./todo.html";
return false;
}
else
{
alert("login failed");
return false;
}
}
Your problem is in the java script in the return part so I don't remember exactly how to end the redirect in true
You can change
window.location.href = "./todo.html";
to
window.location = "./todo.html";

access table from PHP database in Javascript

I have created a login page that allows you to log in using username and password. However, it is currently so that you are always redirected to the "profile" page and there is then checked by PHP whether the login data are correct, because the data are on the DB.
Therefore I have the idea with a validate function directly on the loginpage to check if the data is correct and then I just create a session.
Does anyone have an idea how I can do this?
Here is the code:
<?php session_start();?>
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<title>Login</title>
<link href="bootstrap_style.css" rel="stylesheet" id="bootstrap-css"> <!-- maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css -->
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script> <!-- //maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js or bootstrap.js-->
<script src="jquery.js"></script> <!-- //cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js -->
<link rel="stylesheet" href="style.css">
</head>
<body>
<div class="wrapper fadeInDown">
<div id="formContent">
<!-- Tabs Titles -->
<!-- Icon -->
<div class="fadeIn first">
<img src="default_logo2.png" id="icon" alt="User Icon" onclick="window.open('url', '_blank');"/>
</div>
<!-- Login Form -->
<form action="searchpage.php" method="post" onsubmit="validateForm(event);">
<input type="text" id="login" class="fadeIn second" name="username" placeholder="username">
<input type="password" id="password" class="fadeIn third" name="password" placeholder="password">
<input type="submit" class="fadeIn fourth" value="Log In">
</form>
<!-- Remind Passowrd -->
<div id="formFooter">
<a class="underlineHover" style="color:red" id="warning"></a>
</div>
</div>
</div>
</body>
</html>
<script type="text/javascript">
function validateForm(event) {
var input_username = document.getElementById("login");
var input_password = document.getElementById("password");
if (input_username.value == '' || input_username.value.charAt(0) == ' ' || input_password.value == '') {
event.preventDefault();
document.getElementById("warning").innerHTML = "Fill empty fields!";
}
else {
return true;
}
}
</script>
with this I reach the DB:
$pdo = new PDO('mysql:host=localhost;dbname=ausleihe', 'root', '');
and that is the SELECT:
$login_session = "SELECT * FROM login WHERE username = '".$hereshouldbetheusernamefromform."' AND password = '".herethepasswordfromform."'";
If you need more code or have questions, ask me!
Thx
Client-side JavaScript cannot directly access a Host-side PHP program except through AJAX calls. Only the Host-side software has access to Host-side databases.

Problems on the generated value of the qr code into a input field using JavaScript

JavaScript codes and HTML codes
I'm trying to put a generated value of the qr code a input text to be save in my SQLite database can't pust the darn value of the qr code
var resultDiv;
document.addEventListener("deviceready", init, false);
function init() {
document.querySelector("#startScan").
addEventListener("touchend", startScan, false);
resultDiv = document.querySelector("#results");//works in <p id="results"></p>
resultDiv = document.querySelector('#text4');//wont work at all <input id="text4" type="text" placeholder="Book Info"/>
}
function startScan() {
cordova.plugins.barcodeScanner.scan(
function (result) {
var s = result.text.split('|');
result.format;
result.cancelled;
resultDiv.innerHTML = s;
},
function (error) {
alert("Scanning failed: " + error);
}
);
}
JavaScript codes and HTML codes
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>qrBorrowers</title>
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<script type="text/javascript" src="cordova.js"></script>
<nav>
<div class="topnav">
Add
Borrow
Return
QR code
</div>
</nav>
<Label>
<h1> Borrow a Book </h1>
</Label>
<div class="borrow">
<input id="text1" type="text" placeholder="Borrower Number" onfocus="this.value=''"/>
<input id="text2" type="text" placeholder="Borrower Last Name" onfocus="this.value=''" />
<input id="text3" type="text" placeholder="Borrower First Name" onfocus="this.value=''" />
<input id="text4" type="text" placeholder="Book Info"/>
<input id="text6" type="date" placeholder="Date Borrowed" />
<br>
</div>
<div class="borrow">
<p id="results"></p>
<button id="startScan">Start Scan</button>
<button id="savedb">Save </button>
</div>
<script type="text/javascript" src="js/scanQR.js"></script>
</body>
</html>
With inner HTML it will not going to save your generated QR code to input box. You need to change the innerHTML to value to save the value in input box such that you can use that when form submit as value to save in database.
var resultDiv;
document.addEventListener("deviceready", init, false);
function init() {
document.querySelector("#startScan").
addEventListener("touchend", startScan, false);
resultDiv = document.querySelector("#results");//works in <p id="results"></p>
resultDiv = document.querySelector('#text4');//wont work at all <input id="text4" type="text" placeholder="Book Info"/>
}
function startScan() {
cordova.plugins.barcodeScanner.scan(
function (result) {
var s = result.text.split('|');
result.format;
result.cancelled;
resultDiv.value = s;
},
function (error) {
alert("Scanning failed: " + error);
}
);
}
JavaScript codes and HTML codes
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>qrBorrowers</title>
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<script type="text/javascript" src="cordova.js"></script>
<nav>
<div class="topnav">
Add
Borrow
Return
QR code
</div>
</nav>
<Label>
<h1> Borrow a Book </h1>
</Label>
<div class="borrow">
<input id="text1" type="text" placeholder="Borrower Number" onfocus="this.value=''"/>
<input id="text2" type="text" placeholder="Borrower Last Name" onfocus="this.value=''" />
<input id="text3" type="text" placeholder="Borrower First Name" onfocus="this.value=''" />
<input id="text4" type="text" placeholder="Book Info"/>
<input id="text6" type="date" placeholder="Date Borrowed" />
<br>
</div>
<div class="borrow">
<p id="results"></p>
<button id="startScan">Start Scan</button>
<button id="savedb">Save </button>
</div>
<script type="text/javascript" src="js/scanQR.js"></script>
</body>
</html>
To save the value in input box should not use "resultDiv.innerHTML = s;"
Rather you should use "resultDiv.value = s" which will save your code to input box which you can use to save in SQLite Database.

Prevent OnServerClick in OnClick?

I'm using ASP.NET and I have a link which has both onclick and onserverclick. Both are important, but I want the onclick to prevent the onserverclick running if at all possible.
Here is the item I'm playing with at the moment:
<ul class="clickables">
<asp:Repeater ID="MenuRepeater" runat="server">
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<li class=" <%# ((DataRowView)Container.DataItem)["CSSClass"]%>"
style="background-color: <%# ((DataRowView)Container.DataItem)["BackgroundColour"]%>">
<a id="A1"
runat="server"
onserverclick="LinkClick"
onclick=<%# "return javascript:LinkClick('" + ((DataRowView)Container.DataItem)["Postback"] + "')" %>
customid='<%# ((DataRowView)Container.DataItem)["UniqueID"]%>'
href='<%# ((DataRowView)Container.DataItem)["PageFile"]%>'>
</a>
<%# ((DataRowView)Container.DataItem)["DisplayName"]%>
</li>
</ItemTemplate>
<FooterTemplate>
</FooterTemplate>
</asp:Repeater>
</ul>
Here's the JS I'm expecting to stop the postback:
function LinkClick(parameters) {
if (parameters[0] == "False") {
return false;
}
Am I missing something? Is this even possible? I know that I can prevent a normal postback by returning false in onclick, but can I stop the onserverclick?
UPDATE
After debugging a little more (been away from webdev for a while...), the JS function isn't firing...
UPDATE 2
Here is the full rendered page source:
<!DOCTYPE html>
<link rel="stylesheet" type="text/css"
href="iphone.css" />
<link href="MenuStyles.css" rel="stylesheet" type="text/css">
<meta name="viewport" content="user-scalable=no, width=device-width" />
<script type="text/javascript" src="mootools-core-1.4.5-full-nocompat-yc.js"></script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head><title>
</title></head>
<body>
<form method="post" action="Main.aspx" id="form1">
<div class="aspNetHidden">
<input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" />
<input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="" />
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="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" />
</div>
<script type="text/javascript">
//<![CDATA[
var theForm = document.forms['form1'];
if (!theForm) {
theForm = document.form1;
}
function __doPostBack(eventTarget, eventArgument) {
if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
theForm.__EVENTTARGET.value = eventTarget;
theForm.__EVENTARGUMENT.value = eventArgument;
theForm.submit();
}
}
//]]>
</script>
<div class="aspNetHidden">
<input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="zxCYbgjQBAQXVsCg6EwWqRNbeqa/5PzOIgwdhVB5mEasbEk06ik+VT9njAhsM8vF0ymfwdsNmbuX2R7iMJjdpqLMAVABvva4eorpK2PdajpD+g2RzFXI5SEEG9VjwQUXf3kKgb0KnPjWGYQdgZHGDQ==" />
</div>
<div>
<div class="button">Back</div>
<div class="button-bold">+</div>
<h1>AAR</h1>
<h2 id="lblQuestion">Please wait for a question...</h2>
<ul class="clickables">
<li class=" arrow"
style="background-color: White">
<a id="MenuRepeater_A1_0" onclick="return LinkClick('True')" customid="80f03602-cb67-4d46-99ea-4200459e6a48" href="javascript:__doPostBack('MenuRepeater$ctl01$A1','')">
</a>
Question 1
</li>
<li class=" "
style="background-color: LightGray">
<a id="MenuRepeater_A1_1" onclick="return LinkClick('False')" customid="91f76613-ecaa-47df-a5d6-5a921935b1f9" href="javascript:__doPostBack('MenuRepeater$ctl02$A1','')">
</a>
Question 2
</li>
</ul>
<ul class="clickables">
</ul>
</div>
</form>
<script>
$$('.clickables').each(function(clickable) {
var list = clickable.getElements('li');
list.addEvent('click', function() {
var link = this.getElement('a');
if(this.getFirst('a')) {
window.location = link;
}
});
});
function LinkClick(parameters) {
if (parameters[0] == "False") {
return false;
}
return true;
}
</script>
</body>
</html>
Edit 3
Even when I do:
onclick='return LinkClick(False)'
OR
onclick="return LinkClick(False)"
I still get:
onclick="return LinkClick('True')"
Edit 4
Here is the current rendered source:
<!DOCTYPE html>
<link rel="stylesheet" type="text/css"
href="iphone.css" />
<link href="MenuStyles.css" rel="stylesheet" type="text/css">
<meta name="viewport" content="user-scalable=no, width=device-width" />
<script type="text/javascript" src="mootools-core-1.4.5-full-nocompat-yc.js"></script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head><title>
</title></head>
<body>
<form method="post" action="Main.aspx" id="form1">
<div class="aspNetHidden">
<input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" />
<input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="" />
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="ATtNaDBRU6vswFif62qens2E35fTb32GNoGWb9g2UFbg0Pli0sVNrzGeLKgFI41ojer32c0dUpY2F54DIn0L0dQgi7XFwJCum71RivEO8THI+xsj3ACip5IKj0hPTlB0mDtjRUcRAPxTUDJlxNB2ZvpP1nAR8i7b/tsSrF5sP3Xx3JOb59POn4nxVDOTm80j0OAolK09Mo0leI9EzyQWbpig8Q8FaT7eKzCoJ1Z40TNWX24ZKsxsND4ebBfakOnI8qd2lNdBcJ9FrhBCTEJDCQksXs/rhyJXkksaonPGNFdtWMpiIyQDGkT0V6Q+CPt5fFnZZp4fbKZyRVMcs6XdxwHG3qTYJJgnDbfSvnswKce7la8JVSxoWy+dufG6gxIfJK2rKw0mhfQ21y90ZtkaKZ4CeZWB4TveHRhYJVlinC7bwXwKJGXhqcHJeJ0IoinTS+ZgsbuJOo3zHCslpWThP+ib7IVpmFx+nluy31L65Zy7dVoSZeySboBq10C9e1D3Tm0K5Pvcn/ovG7NmRupa+vgrcYEWQgb6QKym1aartoVmtPm1dWZiJzwA9X7j7Wn5mus2XrE5SXqbvp0bANO1rQ==" />
</div>
<script type="text/javascript">
//<![CDATA[
var theForm = document.forms['form1'];
if (!theForm) {
theForm = document.form1;
}
function __doPostBack(eventTarget, eventArgument) {
if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
theForm.__EVENTTARGET.value = eventTarget;
theForm.__EVENTARGUMENT.value = eventArgument;
theForm.submit();
}
}
//]]>
</script>
<div class="aspNetHidden">
<input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="vi/Uef51SWAjwpFRuN3fwE5Y2FDB84KMHL6HjRIbWSKMEsSrg2RiGbteExTKFCbKhGe16A7xsn6DzMULMalMxqrg2yi9wkWZb0w2ifgCG6mmU0fH3V6zELQeACrtHDQ+4YlxeZ8k7HfGC592ammq3g==" />
</div>
<div>
<div class="button">Back</div>
<div class="button-bold">+</div>
<h1>AAR</h1>
<h2 id="lblQuestion">Please wait for the question...</h2>
<ul class="clickables">
<li class=" arrow"
style="background-color: White">
<a id="MenuRepeater_A1_0" onclick="return LinkClick(True);" customid="b88d214b-0d1c-4986-821e-c1650ffbdbfd" href="javascript:__doPostBack('MenuRepeater$ctl01$A1','')">
</a>
Question 1
</li>
<li class=" "
style="background-color: LightGray">
<a id="MenuRepeater_A1_1" onclick="return LinkClick(False);" customid="d566775f-4bee-4069-adb0-27e8cf8057d9" href="javascript:__doPostBack('MenuRepeater$ctl02$A1','')">
</a>
Question 2
</li>
</ul>
<ul class="clickables">
</ul>
</div>
</form>
<script>
$$('.clickables').each(function(clickable) {
var list = clickable.getElements('li');
list.addEvent('click', function() {
var link = this.getElement('a');
if(this.getFirst('a')) {
window.location = link;
}
});
});
function LinkClick(parameters) {
if (parameters[0] == "False") {
return false;
}
return true;
}
</script>
</body>
</html>
Update 5
So if I leave the method and just return true/false it should stop the postback? This doesn't work (more rendered source).
<!DOCTYPE html>
<link rel="stylesheet" type="text/css"
href="iphone.css" />
<link href="MenuStyles.css" rel="stylesheet" type="text/css">
<meta name="viewport" content="user-scalable=no, width=device-width" />
<script type="text/javascript" src="mootools-core-1.4.5-full-nocompat-yc.js"></script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head><title>
</title></head>
<body>
<script>
function LinkClick(parameters) {
if (parameters[0] == "False") {
return false;
}
return true;
}
</script>
<form method="post" action="Main.aspx" id="form1">
<div class="aspNetHidden">
<input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" />
<input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="" />
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="PiZp7nhFhCoiWV3slT5szv5Z5GAkeDWYHj7QpAPmnwSoKxWg6Zm9HTQGkZXS2Osddx6KwS0eGu/ZMaLjgxVBm1U+Eszzf/OjmAbB78jPAeSwW8GwXRUUp984a7cPZc9cYajKHkhBVtuuALV6HSsT3oRzEPlziohjgWGiV8HFAEOd1CWTj+RAC3B/mWcmrFcexzpR1XhQgnV5LQC7GplUB9Y2E/rb8MFQHfYsRxG5GjWJ5zqe51FhwstLL/dbSklaBkRlFHyFyZNUeA74My6AHCOAWbUjZ42sVcMjaSVnM1zZsxQtSG8+UdbshaLZ9Gz5SOB0Vq4fS8J+TrUlswsSLqQ77Q+m2ouZG+jhPf7jKC59KvIYGlKHkgYVqCvhqhkIG91xg7k9M3f5KAf0yOB6yaesVxnWBCC+UQWcKRePIV9tq2eE8C+8F+rLCPJ6RXgUzpC+DvVmlQMHzmiXWLehtymb2HRX4O/2RUJxLDlVP/8=" />
</div>
<script type="text/javascript">
//<![CDATA[
var theForm = document.forms['form1'];
if (!theForm) {
theForm = document.form1;
}
function __doPostBack(eventTarget, eventArgument) {
if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
theForm.__EVENTTARGET.value = eventTarget;
theForm.__EVENTARGUMENT.value = eventArgument;
theForm.submit();
}
}
//]]>
</script>
<div class="aspNetHidden">
<input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="aQDXp34k4YJiEBt3URBFL0do/c8NXsEmuBtFz8JLRhtXerYXPFYRZmyXIpCef68aO7itJ4EUwQ9eXl2KkxDndTmS4149nNN8BX3AoFLDgB0b4w6cNsn3nzoZ3ENnU4vExyeHdXVJyyVwmZruhoQ7GA==" />
</div>
<div>
<div class="button">Back</div>
<div class="button-bold">+</div>
<h1>AAR</h1>
<h2 id="lblQuestion">Please wait for a question...</h2>
<ul class="clickables">
<li class=" arrow"
style="background-color: White">
<a id="MenuRepeater_A1_0" onclick="return true;" customid="b88d214b-0d1c-4986-821e-c1650ffbdbfd" href="javascript:__doPostBack('MenuRepeater$ctl01$A1','')"></a>
Question 1
</li>
<li class=" "
style="background-color: LightGray">
<a id="MenuRepeater_A1_1" onclick="return false;" customid="d566775f-4bee-4069-adb0-27e8cf8057d9" href="javascript:__doPostBack('MenuRepeater$ctl02$A1','')"></a>
Question 2
</li>
</ul>
<ul class="clickables">
</ul>
</div>
</form>
<script>
$$('.clickables').each(function (clickable) {
var list = clickable.getElements('li');
list.addEvent('click', function () {
var link = this.getElement('a');
if (this.getFirst('a')) {
window.location = link;
}
});
});
</script>
</body>
</html>
You should not do onclick=<%# .... %>, because that automatically encodes output.
It should be something like:
<a onclick="javascript:return LinkClick('<%# ((DataRowView)Container.DataItem)["Postback"] %>')" href="something"></a>
Your output return LinkClick('True') is not even javascript call. That's why you don't see any error.
There is usefull link about asp.net inline expressions:
http://support.microsoft.com/kb/976112
Thank you all so much for your help. The issue was .NET's XSS stuff (built in, automagically screwing with you via the config file..)
Once I removed this line it worked, I guess the way I'm getting my server variable into the JS makes my site think it's being attacked... It's going to be a private site anyway, so XSS is being turned off. If anyone can find a better solution (safer) then please post and I'll try it out...
<httpRuntime requestValidationMode="4.5" targetFramework="4.5" encoderType="System.Web.Security.AntiXss.AntiXssEncoder, System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
^^ Remove that line from Web.config (at your own peril)...
Have you checked to see that parameters[0] == "False"? Could be a string comparison issue? Or it could be that your text is actually outside of the link tag:
<a id="A1"
runat="server"
onserverclick="LinkClick"
onclick=<%# "return javascript:LinkClick('" + ((DataRowView)Container.DataItem)["Postback"] + "')" %>
customid='<%# ((DataRowView)Container.DataItem)["UniqueID"]%>'
href='<%# ((DataRowView)Container.DataItem)["PageFile"]%>'>
</a>
<%# ((DataRowView)Container.DataItem)["DisplayName"]%>
should probably be:
<a id="A1"
runat="server"
onserverclick="LinkClick"
onclick=<%# "return javascript:LinkClick('" + ((DataRowView)Container.DataItem)["Postback"] + "')" %>
customid='<%# ((DataRowView)Container.DataItem)["UniqueID"]%>'
href='<%# ((DataRowView)Container.DataItem)["PageFile"]%>'>
<%# ((DataRowView)Container.DataItem)["DisplayName"]%>
</a>
If I understood your question, then suppressing the onserverclick because of something that happended in the onclick event is quite simple:
<span class="psw">Forgot password?</span>
This is an actual forgot password link on one of my pages. The code behind ForgotPassword() method specified in the onserverclick event is never triggered unless a valid email address is present.
The 'checkForRequiredEmailAddress' method checks for its existence, structure and correctness and then returns true or false depending on the outcome of the checks.
I know your question says that you tried this, but it is definitely working for me so I can only assume it is something silly. Maybe the missing semi-colon in the click event makes a difference.

Cannot talk to asp.net server

Totally n00b question, Im making my first ASP.NET website, with the added twist of using IUI framework that makes things look nice on the iPhone.
How do I hookup the whitebutton to go and verify the user and password on the database?
How do I make the brower go to a different window if the password was good else...
How do I append a message like "password incorrect" on the current page?
I am a c# programmer by default and totally lost in this new field. Please not I cannot make an it doesnt seem to work with IUI.
Master
<%# Master Language="C#" AutoEventWireup="true" CodeBehind="Site.master.cs" Inherits="Cover_Plus.SiteMaster" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head runat="server">
<title></title>
<meta name="viewport" id="viewport" content="width=device-width, user-scalable=0, initial-scale=1.0" />
<link href="iui/iui.css" rel="stylesheet" type="text/css" />
<link title="default" href="iui/t/default/default-theme.css" rel="stylesheet" type="text/css" />
<script type="application/x-javascript" src="iui/iui.js"></script>
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black" />
<link rel="apple-touch-icon" href="img/touch-icon-iphone.png" />
<link rel="apple-touch-icon" sizes="72x72" href="img/touch-icon-ipad.png" />
<link rel="apple-touch-icon" sizes="114x114" href="img/touch-icon-iphone4.png" />
<link rel="apple-touch-startup-image" href="img/startup.png" />
<asp:ContentPlaceHolder ID="HeadContent" runat="server"> </asp:ContentPlaceHolder>
</head>
<body>
<asp:ContentPlaceHolder ID="MainContent" runat="server"/>
</body>
</html>
Default.aspx
<%# Page Title="Cover Plus" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Cover_Plus._Default" %>
<%--Header--%>
<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">
<script type="text/javascript">
</script>
</asp:Content>
<%--Body--%>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<div class="toolbar">
<h1 id="pageTitle">System Login</h1>
</div>
<div class="panel" selected="true" id="loginPanel">
<h2>Login to Cover Plus</h2>
<fieldset>
<div class="row">
<label>Name</label>
<input type="text" name="ident" text="hhh" placeholder="Your login" />
</div>
<div class="row">
<label>Password</label>
<input type="password" name="password" placeholder="Your password" />
</div>
</fieldset>
<form id="Form1" title="Index" name="formname" method="POST">
<a class="whiteButton" type="submit" href="javascript:formname.submit()">Login me in!</a>
</form>
</div>
</asp:Content>
UPDATE :
I think a screenshot may be helpful.
The problem is that "whitebutton" seems to be what I have to use, its not like an asp.net server side button, thus I cannot simply double click to hookup the click event.
I tried Humpty Dumptys method, but it doesnt call the Verify() method in my .CS file at all. I tried with just onclick="Login();" instead of Javascript:Login(); both dont work.
UPDATE 2:
The works at the bottom, but as soon as I replace the Input to Textbox see what happens ...
Many Thanks In Advance
Final Solution :
<div class="toolbar">
<h1 id="pageTitle">Login</h1>
</div>
<div id="pnlLogin" class="panel" selected="true" >
<h2>Login Details</h2>
<form ID="fLogin" runat="server" class="panel" selected="true" >
<fieldset>
<div class="row">
<label>Name</label>
<asp:TextBox id="txtUserName" runat="server" placeholder="Your username" />
</div>
<div class="row">
<label>Password</label>
<asp:TextBox id="txtPassword" textmode="Password" runat="server" placeholder="Your password" />
</div>
</fieldset>
<asp:LinkButton id="btnLogin" class="whiteButton" text="Log me in!" runat="server" onclick="Login_Clicked" />
</form>
</div>
Basically the form was decorated with "class=panel" and the asp: style controls were used to connect to the backend.
You have to validate the user details on your buttonclick event.
If you have a database fields to username and password you can create a function which accept username and password and verify against the database.
eg. in your button click event you can do something similar
var status = verifyUser(username,password);//might return Boolean value
if(!status)
somelable.text = "username or password incorrect";
else
// do something - redirect to some page may be
also have a read at this article about Validating ASP.NET Server Controls and if you willing to use asp.net membership provider,Use Membership in ASP.NET and Validating User Credentials Against the Membership User
if use still not understand ...
modify your code something similar to this
your fronted
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<fieldset>
<div class="row">
<label>Name :</label>
<asp:TextBox ID="txbUserName" runat="server"></asp:TextBox>
</div>
<div class="row">
<label>Password :</label>
<asp:TextBox ID="txbPassword" runat="server"></asp:TextBox>
</div>
<div class="row">
<asp:Button ID="btnLogin" runat="server" Text="Button" CssClass ="whiteButton"
onclick="btnLogin_Click" />
<asp:Label ID="lblError" runat="server" Text="Label"></asp:Label>
</div>
</fieldset>
</asp:Content>
Your Backend
protected void btnLogin_Click(object sender, EventArgs e)
{
var username = txbUserName.Text;
var password = txbPassword.Text;
if(!string.IsNullOrEmpty(username) && !string.IsNullOrEmpty(password))
{
if(!VerifyUser(username,password))
{
lblError.Text = "username or password incorrect";
}
}
}
// I recommend this function to be in a separate class but for example
public static Boolean VerifyUser(string username,string password)
{
//
return true or false
}
WebForms, as it appears you're using, generally has a page-wide <form runat="server">. This will usually be defined as part of the MasterPage (~/Site.master in your case) and can usually be found just a few lines after the <body> tag.
If your site has this form, communication with the server is then handled through server-side Controls (marked with runat="server"):
<asp:TextBox ID="Username" Text="hhh" runat="server"
placeholder="Your Login" />
<asp:TextBox ID="Password" TextMode="Password" runat="server"
placeholder="Your password" />
<asp:LinkButton ID="Login" Text="Login me in!" runat="server"
CssClass="whitebutton" OnClick="Login_Clicked" />
Each server-side control represents regular HTML that it generates during rendering, so the above would become something like this:
<input id="ct100_Username" name="ct100$Username" type="text" value="hhh" placeholder="Your Login" />
<input id="ct100_Password" name="ct100$Password" type="password" placeholder="Your password" />
<a id="ct100_Login" class="whitebutton" href="javascript:__doPostBack('ct100$Login','')">Login me in!</a>
(Note: The actual client-side IDs and names may be a lot different than the examples here.)
The ID attributes of these server-side controls are generally mapped to properties/fields of the Page class, so this.Username will return the TextBox instance representing the 1st <asp:TextBox />.
With AutoEventWireup="True", as you have, you would then define the method that was specified in the OnClick of the <asp:LinkButton /> as part of the Page class:
protected void Login_Clicked(object sender, EventArgs e)
{
var user = Username.Text;
var pass = Password.Text;
if (ValidateUser(user, pass))
// etc.
}

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