I have an asp page which calling another popup page on button click event. and few values are returned from the popup page by following code.
function ShowSelfpopup() {var customizeParamGL = 'status:no;help:no;dialogWidth:600px;dialogHeight:550px;scrolling=no';
var FunctionID = document.getElementById("ctl00_contPlcHdrMasterHolder_LstxtHidFUNCTION_ID").value;
window.showModalDialog('corBrmBlockIssuAndMaintFindUI.aspx?Function_Id=' + FunctionID + '', window, customizeParamGL);
debugger;
if (XYZ_PID != '') {
debugger;
document.getElementById("ctl00_contPlcHdrMasterHolder_LsddlProductID99").value = XYZ_PID;
document.getElementById("ctl00_contPlcHdrMasterHolder_LstxtStartNo").value = XYZ_SN;
document.getElementById("ctl00_contPlcHdrMasterHolder_LstxtEndNo").value = XYZ_EN;
document.getElementById("ctl00_contPlcHdrMasterHolder_lstxthide").value = XYZ_BP;
aspnetForm.submit();
return true;
}
else {
return false;
}
}
Now I have a Text changed event method for LstxtEndNo. Which is firing only first time I am getting data from the popup form. next time I'm calling the popup form and getting data as i confirmed by debugging. but its neither changing values in the textbox nor firing text changed event.
For Javascript Dont use Textchange event instead onchange
<head runat="server">
<title>
</title>
<script>
function AlertTest()
{
alert('hELLO');
}
</script>
</head>
<body>
<form id="form1" runat="server">
<ajax:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server"> </ajax:ToolkitScriptManager>
<div>
<asp:TextBox ID="Button1" runat="server" Text="Button" onchange="AlertTest()" />
</div>
</form>
</body>
Try this with your example
Related
i have created "ButtonClick" function in ASP.NET as following:
<asp:Button ID="btnLogin" runat="server" Text="Login" CssClass="button" CausesValidation="true" onclick="btnLogin_Click"/>
i want to know, is it possible to call a javascript function before and after calling asp.net button click function...???
Thanks.
Yes it's possible, here is quick example:
Java script function to call.
<script type="text/javascript">
function clientValidate() {
alert("execute before");
return true;
}
function executeAfter() {
alert("execute after");
}
</script>
Here is snapshoot for button
<asp:Button ID="btnLogin" runat="server" Text="Login" CausesValidation="true" OnClientClick="clientValidate()" onclick="btnLogin_Click"/>
Notice property onClientClick="clientValidate()", it will be trigger script before button click on the server.
On the server side:
protected void btnLogin_Click(object sender, EventArgs e)
{
ScriptManager.RegisterClientScriptBlock(this, GetType(), "none", "<script>executeAfter();</script>", false);
}
Notice executeAfter();, it will trigger javascript execution after server event.
Don't forget to place <asp:ScriptManager runat="server"></asp:ScriptManager> in your aspx file.
Hope it help
put this on your page and make sure you have a scriptmanager. these codes will handle your pre & post postbacks.
var prm, postBackElement;
if (typeof Sys != "undefined") {
prm = Sys.WebForms.PageRequestManager.getInstance();
prm.add_initializeRequest(InitializeRequest);
prm.add_endRequest(EndRequest);
}
function InitializeRequest(sender, e) {
postBackElement = e.get_postBackElement();
if (postBackElement.id == "btnLogin") {
// before click codes
}
}
function EndRequest(sender, e) {
if (postBackElement.id == "btnLogin") {
// after click codes
}
}
Before:
<script type="text/javascript">
function executeBefore() {
alert("execute before");
}
</script>
<asp:Button ID="btnLogin" runat="server" Text="Login" CausesValidation="true" OnClientClick="executeBefore()" onclick="btnLogin_Click"/>
After:
<script type="text/javascript">
function executeAfter() {
alert("execute after ");
}
</script>
Add this code to your server side event:
Page.ClientScript.RegisterStartupScript(GetType(), "none", "<script>executeAfter();</script>", false);
If you don't have a master page, or are not using ajax, there is no need to add ScriptManager.
You can call Java scrip function before server side click using OnClientClick():
aspx(design)
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script type="text/javascript">
function Test() {
alert('client click');
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button Text="btn" runat="server" ID="btn"
OnClick="btn_Click" OnClientClick="Test()" />
</div>
</form>
</body>
</html>
.cs
protected void btn_Click(object sender, EventArgs e)
{
Response.Write("Server Click");
}
First time you can call your javascript function in Button's OnClientClick event passing your function name.
<asp:Button ID="btnLogin" runat="server" Text="Login" CssClass="button" CausesValidation="true" onclick="btnLogin_Click" OnClientClick="return functionNAME();"/>
Second time, in your button click event btnLogin_Click call js as follow
ScriptManager.RegisterStartupScript(this.Page, this.Page.GetType(), "script", "<script type='text/javascript'>functionNA();</script>", false);
For calling it before, you could consider using onload function, like this example:
<body onload="myFunction()">
For calling it afterwards, just link the button to execute JS onClick?
I don't think I quite understand your intentions.
I have a dropdownlist control ddlAffilation, a panel pnlForms, a panel Complete, a button Submit, a button Return.
I have a validationcontrol on the dropdownlist.
here is my jquery code
<script type="text/javascript">
$(document).ready(function () {
$("#<%= Submit.ClientID %>").click(function () {
$("#<%= pnlForms.ClientID %>").fadeOut('slow');
$("#Complete").delay(800).fadeIn('slow');
});
$("#<%= Return.ClientID %>").click(function () {
$("#Complete").fadeOut('slow');
$("#<%= pnlForms.ClientID %>").delay(800).fadeIn('slow');
});
});
</script>
I have 2 problems:
1) With this jQuery code, I can go back and forth (fade out pnlForms, fade in Complete when click on Submit and vice versa when click on Return) only when i don't choose any value in the dropdownlist box. If I choose any value in the dropdownlist, the Return button doesn't work.
2) The jquery code bypass the .net server validation control. I need the code not do anything if no value is selected from the dropdownlist. I have tried
var isValid = true;
if ($("#<%= ddlAffilation.ClientID %>").val() == "") {
isValid = false;
return false;
}
if (isValid == true) {
...
but it doesn't work. What's the best way to do this?
Thanks,
==================================================================================
I can't add an answer to my own question so I reply to John here:
Thanks John. I have my code like this and it solves problem 2.
<script type="text/javascript">
$(document).ready(function () {
$("#<%= Submit.ClientID %>").click(function (e) {
if (IsValid() == false) {
e.preventDefault();
return false;
}
else {
$("#<%= pnlForms.ClientID %>").fadeOut('slow');
$("#Complete").delay(800).fadeIn('slow');
}
});
$("#<%= Return.ClientID %>").click(function () {
alert('blah2');
$("#Complete").fadeOut('slow');
$("#<%= pnlForms.ClientID %>").delay(800).fadeIn('slow');
});
function IsValid() {
// Add any other validation in here
if ($("#<%= ddlAffilation.ClientID %>").val() == "") {
return false;
}
return true;
}
});
</script>
However, problem 1 still exists. Let me clarify. I have a few textboxes, a dropdownlist and a submit button to collect feedback from the users. They are all in the panel pnlForms.
All controls can be empty except for the dropdownlist. We took care of this using your code and a server validation control.
when the users click the submit button, I want the pnlForms to fadeOut and a hidden panel called pnlComplete to fadeIn. The pnlComplete has a text saying thanks for the feedback and a button called Return that let the users send another feedback.
When the users click on the Return button, the opposite happens here. The pnlComplete fadeOut and the pnlForms fadeIn.
The Submit button works well but the Return button doesn't work at all. I set some alert() inside the Return.click(function but it doesn't hit.
Any ideas?
Here is the code of the whole page.
<%# Page Title="" Language="C#" MasterPageFile="~/Master.master"
AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Default" %>
<asp:Content ID="Content1" ContentPlaceHolderID="content" runat="Server">
<asp:UpdatePanel ID="pnlForms" runat="server">
<ContentTemplate>
<fieldset>
<legend>Your Information</legend>
<ol>
<li>
<label for="ctl00_content_name">
Your Name:</label>
<asp:TextBox ID="Name" runat="server" Width="150px"></asp:TextBox>
<em class="optional">Optional </em></li>
<li>
<label for="ctl00_content_status">
Your Affiliation:*</label>
<asp:DropDownList ID="ddlAffilation" runat="server" Width="155px">
<asp:ListItem Text="--Select One--" Value="" Selected="True" />
<asp:ListItem>F</asp:ListItem>
<asp:ListItem>S</asp:ListItem>
<asp:ListItem>T</asp:ListItem>
</asp:DropDownList>
<em class="required">Required
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage=" - Please select your affiliation"
ControlToValidate="ddlAffilation" SetFocusOnError="True" ForeColor=""></asp:RequiredFieldValidator>
</em></li>
</ol>
</fieldset>
<div style="text-align: center;">
<asp:Button ID="Submit" runat="server" Text="Submit" OnClick="submit_Click" /></div>
</ContentTemplate>
</asp:UpdatePanel>
<div id="Complete" style="display: none;">
<asp:UpdatePanel ID="pnlComplete" runat="server">
<ContentTemplate>
<p>Thank you</p>
<div style="text-align: center;">
<asp:Button ID="Return" runat="server" Text="Return" /></div>
</ContentTemplate>
</asp:UpdatePanel>
</div>
</asp:Content>
<asp:Content ID="Content3" runat="server" ContentPlaceHolderID="cpClientScript">
<script type="text/javascript">
$(document).ready(function () {
$("#<%= Submit.ClientID %>").click(function (e) {
if (IsValid() == false) {
e.preventDefault();
return false;
}
else {
$("#<%= pnlForms.ClientID %>").fadeOut('slow');
$("#Complete").delay(800).fadeIn('slow');
}
});
$("#<%= Return.ClientID %>").click(function () {
$("#Complete").fadeOut('slow');
$("#<%= pnlForms.ClientID %>").delay(1000).fadeIn('slow');
});
function IsValid() {
// Add any other validation in here
if ($("#<%= ddlAffilation.ClientID %>").val() == "") {
return false;
}
return true;
}
});
</script>
</asp:Content>
I'm not sure if I read your question right or not, but if your issue is that you don't want the jquery to continue firing and allow the form to submit if the dropdown is empty do this:
Instead of attaching a .click event to your button, attach a .submit event to your form. Then you want to use e.PreventDefault() to stop the main submit execution if its not valid
Eg:
$("#FORMNAME").submit(function(e) {
if (IsValid() == false) {
e.preventDefault();
return false;
}
// Submitting form...
}
function IsValid() {
// Add any other validation in here
if ($("#<%= ddlAffilation.ClientID %>").val() == "") {
return false;
}
return true;
}
Also, you should ALWAYS do server validation along with your client validation.. otherwise all someone has to do is directly submit / bypass your javascript checks
Edit for your edit:
Is the return button being created dynamically or is it there on page load? If its dynamic, its probably never getting assigned to in your jquery, as it doesn't exist when it runs.
Here is a quick test you could try:
var returnButton = $("#<%= Return.ClientID %>");
alert(returnButton.attr("id");
If you don't get back the ID of your return button, its not matching up in your code and thats why your click event isn't working. If thats the case, do a view source on your page and find out what the actual return button ID is set to (this is easier with FireBug or similar tool)
Adding this as a separate answer since its just a huge chunk of code that isn't exactly related to the original answer, but does work as intended. I took the code you gave and converted to basic html from asp.net, and it does work correct, does it work for you?
Could you try posting the output from the asp.net page instead of the code itself? Maybe something isn't being set right on the button element's ID.
<html>
<head>
<script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.6.2.js" type="text/javascript"></script>
</head>
<body>
<div ID="Content1">
<div ID="pnlForms">
<fieldset>
<legend>Your Information</legend>
<ol>
<li>
<label for="ctl00_content_name">
Your Name:</label>
<textbox ID="Name" runat="server" Width="150px"></TextBox>
<em class="optional">Optional </em></li>
<li>
<label for="ctl00_content_status">
Your Affiliation:*</label>
<select ID="ddlAffilation" Width="155px">
<option Value="" Selected="True">--Select One--</option>
<option>F</option>
<option>S</option>
<option>T</option>
</select
</li>
</ol>
</fieldset>
<div style="text-align: center;">
<Button ID="Submit" Value="Submit" OnClick="submit_Click">Submit</Button></div>
</div>
<div id="Complete" style="display: none;">
<div ID="pnlComplete">
<p>Thank you</p>
<div style="text-align: center;">
<Button ID="Return" Value="Return">Return</Button></div>
</div>
</div>
</div>
<div ID="Content3">
<script type="text/javascript">
$(document).ready(function () {
$("#Submit").click(function (e) {
if (IsValid() == false) {
e.preventDefault();
return false;
}
else {
$("#pnlForms").fadeOut('slow');
$("#Complete").delay(800).fadeIn('slow');
}
});
$("#Return").click(function () {
$("#Complete").fadeOut('slow');
$("#pnlForms").delay(1000).fadeIn('slow');
});
function IsValid() {
// Add any other validation in here
if ($("#ddlAffilation").val() == "") {
return false;
}
return true;
}
});
</script>
</div>
</body>
</html>
Is there a way to send data to an aspcontrol say a label called label1? Via jquery?
I know jquery only likes html but is there a way to just send the raw text to an asp control using a similar method below:
<script type="text/javascript">
$(function () {
$('button').click(function () {
$(document).ready(function () {
var x = $('textarea').val();
$('textarea').val('');
var label = $("#<%= Label1.ClientID %>");
var newdiv = $("<div></div>").html(x).attr('id', 'test');
$('#test1').append(newdiv);
var serializer = new XMLSerializer();
label.text(serializer.serializeToString(newdiv));
return false;
});
});
});
</script>
I think the bigger issue is asp.net changes the id and trying to get that in the code isn't that easy.
Can you use the name attribute? If so you can just look for the name attribute containing your name using the jquery selector '[ name *="YourName"]'
EDIT: I meant to add firebug is a great help for examining page elements and figuring exactly what you can use (Ex: asp.net adds a name attribute to a button by default) and whats going on (like your return false failing) then tweaking your jquery from the watch window.
Sample asp.net form content:
<p>
<asp:TextBox ID="TextBox1" name="TextBox1" runat="server" Rows="3"></asp:TextBox>
</p>
<p>
<asp:Button ID="Button1" runat="server" Text="Button" /></p>
<p>
<asp:Label ID="Label1" name="Label1" runat="server" Text="Label"></asp:Label>
</p>
<div id="test1"></div>
jquery:
$(function () {
$('[name*= "Button1"]').click(function () {
var x = $('[name*= "TextBox1"]').val();
var newdiv = $("<div></div>").html(x).attr('id', 'test');
$('#test1').append(newdiv);
$('[name*= "Label1"]').text($('#test1').html());
$('[name*= "TextBox1"]').val('');
return false;
});
});
Here's how to do it without jQuery:
<%# Page Inherits="System.Web.UI.Page" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Test</title>
<script type="text/javascript" src="App_Resources/JavaScript/jquery-1.4.4.min.js"></script>
</head>
<body>
<form runat="server">
<asp:Label ID="testLabel" runat="server" Text="test" />
<script type="text/javascript">
$(document).ready(function ()
{
var label = document.getElementById("<%= testLabel.ClientID %>");
var div = document.createElement("div");
div.innerText = "content";
label.innerText = div.outerHTML;
});
</script>
</form>
</body>
</html>
I'm trying to show a modal dialog when the user click on an ASP.Net button. This is my 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');
},
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="New" OnClientClick="ShowDialog();"/>
<asp:Label ID="Message" runat="server"></asp:Label>
<div id="dialog" title="Select content type">
<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 I click on TreeNew button appears modal popup but inmediately the page do postback.
What's happening?
While adding a return false; will fix your problem (as suggested by other answers), I think the best thing for you to do is use a standard HTML button. There is no reason to use an ASP.NET control in this case since you do not intend to postback.
If you insist to use a ASP.NET button, however, at least set UseSubmitBehavior="False" so that the button is rendered as <input type="button"/> instead of <input type="submit"/>.
Try
OnClientClick="return ShowDialog();"
AND
function ShowDialog() {
$('#dialog').dialog('open');
return false;
}
This will prevent the postback.
Your OnClientClick needs to return false like so:
OnClientClick="ShowDialog(); return false;"
Buttons by default postback but return false prevents the default behavior
You're not returning false from your OnClientClick. When you don't explicitly return false, "true" in this situation is assumed. A return value of true from your OnClientClick indicates it's fine to do a postback. Try changing OnClientClick to the following (adding "return false" after your call to ShowDialog())
OnClientClick="ShowDialog();return false;"
This article maybe of some value to you: using-jquery-modal-dialog-confirmation-with-an-asp-net-server-control.
Hope this helps some.
Use preventDefault() jQuery function to prevent button postback
Try this:
function ShowDialog(evt) {
evt.preventDefault();
$('#dialog').dialog('open');
}
I have an aspx page defined as follows:
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script type="text/javascript" language='javascript'>
function changecolor() {
var lbl = document.getElementById('lblDisplayDate');
lbl.style.color = 'red';
};
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="lblDisplayDate" runat="server"
Text="Label"></asp:Label><br />
<asp:Button ID="btnPostBack2" runat="server"
Text="Register Client Block Script"
onclick="btnPostBack2_Click" />
</div>
</form>
Here is the btnPostBack2 Click event:
protected void btnPostBack2_Click(object sender, EventArgs e)
{
if (!ClientScript.IsClientScriptBlockRegistered("JSScriptBlock"))
{
ClientScript.RegisterClientScriptBlock(this.GetType(),
"JSScriptBlock",
"changecolor();",
true);
}
}
Even though, I put the script in a function to change the color, it is still not doing it and why do I need to add the script tags to true if the function is already enclosed in script tags?
lblDisplayDate is in the Page Load where it is set to the current time on every page reload.
Change this line:
var lbl = document.getElementById('lblDisplayDate');
to:
var lbl = document.getElementById('<%= lblDisplayDate.ClientID %>');
Also, this probably isn't doing what you want it to do anyway. Try adding:
OnClientClick="changecolor()"
to your <asp:Button /> tag.
Edit At this point I am pretty confused as to what exactly you are trying to accomplish...
If you just want to change the color of the label without posting back, change your <asp:Button /> to a normal <input type="button" /> with an onclick handler and call your script, like this:
<input type="button" ... onclick="changeColor();" />
If you want to change the color of the label while posting back, then just change the label's background in the code-behind like this:
protected void btnPostBack2_Click(object sender, EventArgs e)
{
/* ... other stuff goes here ... */
lblDisplayDate.BackColor = Color.Red;
/* ... other stuff goes here ... */
}
like what Sean already stated: it is best to use OnClientClick in this case. OnClientClick would prevent a postback occuring - it is done dynamically using javascript. All u need to do is preference it to the javascript function.
I do not understand y u want to do a "RegisterStartupScript and RegisterClientScriptBlock" on colour change. These should be used when u want to add javascript from the code behind, but seeing that u have it written out already in the aspx page, its use is pointless.
Check this out. I have modified your code and its working fine now without postback.
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
<script type="text/javascript" language='javascript'>
function changecolor() {
var lbl = document.getElementById('lblDisplayDate');
lbl.style.color = 'red';
};
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="lblDisplayDate" runat="server"
Text="Label"></asp:Label><br />
<asp:Button ID="btnPostBack2" runat="server"
Text="Register Client Block Script"
OnClientClick="changecolor(); return false" />
</div>
</form>
</body>
</html>
hope this helps