Web Forms :: Recaptcha And Auto-postback?
Feb 11, 2010
I am using the captcha from recaptcha.net in my asp.net webform. The webform has a checkbox list which does an auto-postback. Now when I select any of the checkboxes, the pages is posting back and the captcha is refreshing too and gives me a new image and also throws the validation error,"Incorrect word, please enter".how to avoid the refrshing of the image(or captcha) on every postback of the page.I tried using other capctha controls from code project but I need an audio control for my captcha and have tried to use .net speech libraries to produce the audio, but could not succeed.So I am working with the recaptcha instead.
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Aug 10, 2010
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Jan 11, 2011
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I make a project to solve this and I share the code of it here. (VB.Net 4.0)
Front Code:
[Code]....
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Aug 27, 2012
How to delay the Auto postback for 10sec in textbox of asp.net.
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Mar 11, 2010
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Jul 22, 2010
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Here is my code:
[Code]....
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Aug 9, 2010
i have a multiline textbox .
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Mar 3, 2011
I have a web flow (asp.net) which has a drop down and a check box.
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Working on VS2008 with using .vb
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Here are some of the codes which are relevant to it.
[code]....
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Jul 6, 2010
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Sep 22, 2010
I have a CreateUserWizard where there are two plain WizardSteps, then the CreateUserWizardStep, then CompleteWizardStep. In the CreateUserWizardStep I would like to use a reCAPTCHA control. Obviously when I go to the first plain WizardStep the reCAPTCHA control is invalid. So when I click the Next button from the first WizardStep the form isn't valid and I can't progress. I'm not sure how to handle this situation.
Custom navigation template somewhere maybe?
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Jan 3, 2010
I have deployed reCaptcha using ASP.NET. [URL]
Users are complaining they need to click the submit button. They want the option to use the Enter Key on the keyboard as well. How do I enable the Enter Key?
Below is my working code.
<asp:Content ID="Content1" ContentPlaceHolderID="ContentSpeeD" Runat="Server">
<p>Prove yourself Human by passing the Captcha Test.<br>
Please type the two words below.<br>
The purpose of this test is to help prevent our site being spammed.</p>
<recaptcha:RecaptchaControl
ID="recaptcha"
runat="server"
PublicKey="pubkey"
PrivateKey="privkey"
/>
<br />
<asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click" />
<br/>
<asp:Label Visible=false ID="lblResult" runat="server" />
</asp:Content>
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Sep 20, 2015
When I select the Search By dropdown, an additional gridview is created on auto-postback.I will ad a visual and code as soon as this is accepted for review.
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Feb 22, 2010
I am using th recaptcha control in a update panel. It does'nt seem to validate the second word entered otherwise it works fine.
Attached is the code
<asp:UpdatePanel>
<ContentTemplate>
<table><tr>
<td height="20" valign="top"><div style="margin-left:50px;margin-top:3px">Comments/request: </div></td>
[Code]....
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Mar 9, 2010
I have a "database explorer" page that is desgined to be pointed to an unknown database and allow users to browse the data, so it basically uses the SQL system tables to develop its queries and pull in data to tables using auto-generate columns.The problem that I have is that I would like certain types of columns to have certain formats and I'm wondering the best way to go about it. I could format the column in code in the RowDataBound event I assume, but I'm wondering if there some better standard way to do this? Is there a setting of any kind that I can use? For example I want all of the datetime fields to be formated for short date, like {0:d}, I want decimal fields to have 4 decimal places, etc.
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I want this task to be done every day at 12 pm or every n hour.
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Jan 6, 2011
How do I implement reCaptcha in ASP.NET MVC and C#?
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Jan 25, 2010
I am using recaptcha in an ASP.NET 3.5 application and for some odd reason the ErrorMessage property is not working. Below is my code
<recaptcha:RecaptchaControl ID="recaptcha" runat="server" PublicKey="*******************************" PrivateKey="*******************" Theme="white" ErrorMessage="This is an typo error" />
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Nov 8, 2010
I've implemented reCAPTCHA following the instructions on this site:[URL]However I am unable to get it to render on my lightbox. It renders as below when i check with firebug.
<noscript> <iframe src="http://www.google.com/recaptcha/api/noscript?k=6Lctg74SAAAAADV4UAfyRdEUdZi_FGc4PCqA7LEn" width="500" height="300" frameborder="0"> </iframe><br /><textarea name="recaptcha_challenge_field" rows="3" cols="40"></textarea><input name="recaptcha_response_field" value="manual_challenge" type="hidden" /> </noscript>
Note that when i look in firebug the < and > display as the text "& lt;" and "& gt;" (without the space)
Let me know if there's any additional information required to help with this problem.
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Oct 3, 2010
I am using this this Recaptcha approach in my MVC project however it does not validate to Strict 1.0 DOCTYPE.
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Jun 25, 2010
I'm implementing the recaptcha control from google.
I built a simple c# test project from their example and all works. Now, instead of having the PublicKey and PrivateKey in the aspx page, I'd rather assign these values at run time as they will most likely be pulled from either the web.config or a database table.
I tried the following in the Page_Load
protected void Page_Load(object sender, EventArgs e) {
recaptcha.PublicKey = "<deleted for obvious reasons>";
recaptcha.PrivateKey = "<ditto>";
}
but I get an error stating "reCAPTCHA needs to be configured with a public & private key."
I also tried overriding the oninit method of the page and assigning the values there, but no joy.
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May 17, 2010
I have a master page which contains a Login control so that the user can login/logout from any page. However, a couple of content pages require a Recaptcha control. This causes problems because when I try and log in on a page that has the Recaptcha control, the system expects me to enter the words. I'm aware of the lack of validation groups in the Recaptcha control, and the fact that you can't have multiple forms on an ASP.NET page. Is there a way to work around this? A 'hacky' way I can think of, is in the "Login" event, check the page for a Recaptcha control. If one exists, then disable it, otherwise continue. However, that just seems quite inefficient especially when there are quite a few pages and most won't have a Recaptcha control.
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Mar 30, 2010
The reCaptcha example for ASP.NET does not seem to work. I followed the instructions but it always returns false, "The verification words are incorrect.". The entries are good. I'm using localhost as the site but am not getting any public/private key errors which I did get when adding a bad key (as a test).I've seen this error reported a lot but no good answers. Some suggest to call the validate on the control before checking to see if it is valid but this did not work for me.
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