Web Forms :: OnServerClick - How To Validate Captcha In Javascript
Feb 10, 2011
I would like to do the validation work using javascript or jquery in onclientclick and then show blockUI, next page using server click. But, I have a captcha validation in server click and I don't know how to validate the captcha in jquery or javascript.
protected void btnRegister_Click(object sender, EventArgs e) {
lblMessage.Text = ""; if (Page.IsValid) { if (txtUserName.Text == "") {
lblMessage.Text = "نام کاربری را وارد نمائید";
txtUserName.Focus(); return;
} if (!BLL.IsStrictPassword(txtPassword.Text)) {
lblMessage.Text = "طول کلمه عبور حداقل باید 5 کاراکتر باشد";
txtPassword.Focus(); return; } if (ddlYear.Text == "<سال>"
|| ddlMonth.Text == "<ماه>" || ddlDay.Text == "<روز>") {
lblMessage.Text = "لطفا تاریخ تولدتان را وارد نمائید";
return; } if (!chk_Low.Checked) {
lblMessage.Text = "برای عضویت می بایست قوانین سایت را بپذیرید"; return; } if (txtSecurityCode.Text == String.Empty) {
.Text = "کد امنیتی را وارد نکرده اید";
txtSecurityCode.Focus(); return; } secCode.ValidateCaptcha(txtSecurityCode.Text);
if (!secCode.UserValidated) {
lblMessage.Text = "کد امنیتی نادرست وارد شده است";
return; } try { //some code } }
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Jun 6, 2010
We use Captcha control in a registration form that we make full client validation for all fields in JavaScript ( JQuery ) beside server validation .. I tried a lot of ways but all will write the Captcha value in JavaScript that can be accessed by anyone :( I search if is there any way that allow me validate Captcha value in client side using JQuery in secure way or it can't be done ?
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May 29, 2010
I have several html buttons on my form which I have calling the same routine in my code behind.
For example:
<input id="cmdSaveChangesOnEdit" type="submit" value="Save Changes" name="cmdSaveChangesOnEdit" runat="server"
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Dec 25, 2010
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Jan 20, 2011
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Jan 28, 2011
I've created some dynamic buttons on page load but the buttons need to have an onserverclick event and pass a value. I used buttons because they can pass a value. My code below so far, just outputs onserverlick to the html page, which is obviously not what I want. Would it be possible to use some other method, I originally used hyperlinks until I needed to pass a value (I didn't want to use querystrings).
[Code]....
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Sep 12, 2010
I have checkboxes in one column of listview and outside the listview I have one dropdown and one button.
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Aug 20, 2010
I'm new with ASP.NET, and this is my first project that make myself cruel. I'm trying to create a link on every row that created dynamically.(I'm using GridView). The Problem is, the onserverclick eventhandler show nothing.? Heres the code:
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e.Row.Cells[0].Text += "<font id='12345' runat='server' color='blue'
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Here the click EventHandler on also on code behind :
protected void Submit_Click(object sender, EventArgs e) {
Label1.Text = "Hello --->"; }
I don't want use Java script to for onclick() handler, I want to do it on code behind.
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Apr 6, 2010
Can any one let me know "How to validate the length of the text present in the textboxes of a Gridview using javascript".
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Mar 12, 2010
I'm making a website in ASP.NET 4.0 where I make use of the RequiredFieldValidator control to validate a wizardstep.It works perfectly with Javascript enabled, but when I turn it off (in my Firefox) it just goes to the next step.We don't do a Page.IsValid check, but we don't do much on the "next button clicked" event either.Certainly not something that is forcing it to go to the next step.
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Feb 1, 2010
Here's what is in my .aspx:
<div> <input id="testButton" type="image" src="<%=TestImageUrl %>" onserverclick="RedirectTest" /> </div>
And in my code-behind this:
protected void RedirectTest(object sender, EventArgs e) {
// Logic is here}
It's not hitting my method at all when I click the image. And please note, I do not want to use an ImageButton. I want to figure out how to get this working with a plain old input tag.
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Feb 22, 2010
Im using regular asp.net c# (webforms)
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Dec 27, 2010
How Can I use Java Script to Validate Pages Example : Check Required Field Before Saving
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Jan 5, 2011
The event is simply not firing, what am I missing?
Code for the button:
<input type="button" class="button hide" id="savetext" style="float:right;" value="Hello" runat="server" OnServerClick="savetext_Click"/>
And the code that is generated (i.e. when opened in a browser and the source is viewed) is this:
<input onclick="__doPostBack('ctl00$Main$savetext','')" name="ctl00$Main$savetext" type="button" id="savetext" style="float:right;" class="button hide" value="Save to text" />
I've got <pages clientIDMode="Static" /> in web.config but the name and generated onclick event are prefixed despite that. Server side code:
Protected Sub savetext_Click(ByVal sender As Object, ByVal e As System.EventArgs)
End Sub
To be clear, my goal is to register a click on a button server-side, not just client-side.
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Jan 28, 2011
protected void btnNext_Click(object sender, EventArgs e) { btnNext.InnerHtml = "CLICK";
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This works fine, but when I add an onclick event:
<button type="submit" runat="server" onserverclick="btnNext_Click" onclick="return checkForm();" id="btnNext">Next > </button>
And in the head:
<script type="text/javascript"> function checkForm() {
if (document.getElementById("<%=lstChooseSpec.ClientID %>").value) {
return true; } else {
$.jGrowl("<strong>Warning!</strong><br />Please select an item", { sticky: true });
return false; } } </script>
It submits the form, but doesn't change the buttons text to 'CLICK'. The text only changes to 'CLICK' when the onclick() isn't defined, although the form is still submitting!
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Nov 22, 2010
I have a form with my own JQuery validation. When a JQuery <button id=btnRegister type=submit> is clicked, my validation code is invoked and if invalid, form does not submit. All works great. I have another <button id=btnSave> on this form. I would like btnSave to fire asp.net server side event (onserverclick) only if form data is valid. I have tried following -
<button type=submit onclick='if($(this).closest('form').submit()==false) return;' onserverclick='btnSave_click' runat =server>Save</button>
When I click on the btnSave, it does invoke my form's submit event handler, which correctly returns false, if invalid. So far so good. After this point, I would like the onserverclick event not trigger. However, the onserverclick does trigger and the page posts back, even when the form is invalid. As I see it, cannot have onclick and onserverclick at the same time. What should I do to make them co-exist harmoniously? If I change <button> to <input type=submit> it all works out. But I like <button>'s look and feel more.
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n my aspx page i am having a checkbox list ..It has binded values from a table..
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for(i=0; i<elements.length;i++)
{
if(elements[i].checked)
[code]....
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Feb 12, 2010
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Feb 10, 2011
I am trying to validate that each radiobuttonlist has been selected. the radiobuttonlist is dynamically created from a sql database. The following line errors out "if (MyRadio[j].checked) {", the error is "checked' is null or not an object". The following is the code.
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder2" runat="Server">
<cc1:TabContainer ID="TabContainer1" runat="server" ActiveTabIndex="0" CssClass="ajax__myTab" Width="100%" ScrollBars="Horizontal">
<cc1:TabPanel ID="TabPanel1" runat="server" HeaderText="" Enabled="true">
[Code]....
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Feb 2, 2010
I have been experiencing some very strange behavior using html buttons with the onserverclick attribute. What I am trying to do is use jQuery to designate the default button on the page. By default button I mean the button that is "clicked" when a user hits enter. In testing, I would hit enter while in an input field and sometimes the intended "default" button was clicked and the server side method defined in the corresponding onserverclick attribute was hit. Other times a post back was made without hitting the server method. In order to isolate the issue I created a minimal test case and found some very interesting results.
Client side:
[Code] ....
Server side:
public partial class admin_spikes_ButtonSubmitTest : System.Web.UI.Page {
protected void Page_Load(object sender, EventArgs e) {
} protected void ServerMethod1(object sender, EventArgs e) {
_response.Text = "server method1 was hit";
} protected void ServerMethod2(object sender, EventArgs e) {
_response.Text = "server method2 was hit"; } }
What I found was that everything worked as expected with this code except when I removed one of the input elements. In Firefox 3.6 and IE 8 when only one input exists on the page, hitting enter does not trigger the onserverclick, it makes a post back without even being jQuery "clicked" or actually "clicked". You can test this by starting with two inputs and clicking "test2". This will output "server method2 was hit". Then just hit enter and the output will be "server method1 was hit. Now take away an input and run the same test. Click "test2" see the results, then hit enter and you will see that nothing will change because the "test1" method was never hit. Chrome worked as expected
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Dec 17, 2010
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how to validate date in datalist using javascript. let me know as soon possible.
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I'm trying to validate an integer range with a CustomValidator. The range is set dynamically, so when either the min/max values on my usercontrol change, the client validation function is updated. However, I can't get the validation function to fire. I have this code:
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