How To Use The Captcha Image Verification In C#
Dec 26, 2010how can i use CAPTCHA Image Verification in C#
View 10 Replieshow can i use CAPTCHA Image Verification in C#
View 10 Replieshow you have implemented mathematics type captcha in comments sections in URL...I like to implement this type of captcha security, its more clean and user friendly.
View 1 Repliesanyone have link or code to create image / word verification? i want to use this on my contact form to avoid spamming and better security. i've not found anything useful on net.
View 3 RepliesI'm implementing captcha on my website like the one in [URL]. It is working fine while running on VS2008. However, not when uploaded on IIS. I think the image is being blocked by IIS.. anyone knows how to fix this?
View 1 RepliesI want to have the captcha image validation where users need to enter the text shown in image.
View 1 Replies I have a web application running asp.net and SQL Server 2008.
When i run the site within VS2008, the captcha image works fine, but when i run the site via the internet i have no captcha image.
I used a custom captha inside my mvc application and it works perfectly fine in local but in production it isn't being generated. why is that?
I used the following statement for saving the image. do you think it is beacuse of that?
[Code]....
i have a image control that show Captcha...
Problem:in the Host(not local system) Captcha show only one image that created for first time,but in my local system every things is right,and captcha change for every page load...
i think image can't find server folder address and always show first produced image!!!
see code:
[Code]....
where is the problem?
notice:when i see server "Upload" folder and "AddIntuitionReflexRandom.gif" file,content change truly,but that can't show in my image.
[URL]
I have implemented as writeen in the aritcle but the captcha image is not being shown when I run the application.why
captcha which supports in MVC application and allow captcha image to refresh with "Genreate new image" link.
View 5 RepliesI have issue in Mathematical captcha, its not working in IIS,Image path not getting, it shows altertext "Captcha".
View 1 RepliesI have implemented captcha control in my webpage based on the article How to implement Captcha in ASP.Net.
It is working fine when running through the VS IDE, but when i deployed the website in IIS 8 (Windows 8.1) server the captcha image does not show.
How can I bind image control with captcha from generic handler using jquery.
View 1 RepliesI tried this link to generate verification Image [URL] ..... It works fine.
But I'd like to put a button in page for regenerating captcha for example. When the image was unreadable for user.
So I put an updatepanel in page and this is my code:
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<tr> <td colspan="2">
<asp:Image ID="imCaptcha" ImageUrl="~/Captcha.ashx" runat="server" />
[Code] .....
Although the image changes but the whole page is refreshed. Whether this is due to incompatibilities httphandler and updatepanel?
Does anyone know if its possible to log someone into a site from their verification email? I don't want to take them to the login page from their email.
View 6 RepliesI am using the ASPNET_Captcha control for my login page. It works fine. However when i implement the forms authentication, the catcha image does not appear.
Do i need the location section in the web.config file? If yes can you share the details for the same.
i my project i used sand box account for online transfer, to get the ipn value for the verification of the payment,
i used the following codes for sending request, and getting responce,the value i'm getting is alwaya
[code]....
the value in the above buffer is always Invalied.
My ASP.NET application is using an assembly without strong name. When I run it in IE, it shows an error saying: Could not load file or assemlby 'xxxxx.' or one of its dependencies. Strong name signatuer could not be verified. The assembly may have been tampered with, or it was delay signed but not fully signed with the correct private key. (Exception from HRESULT: 0x80131045)"I use sn.exe -Vr xxxx to register that assembly to skip the strong name verification, but still it shows that error. What could be causing this problem, and what can I do next to fix it?
View 1 RepliesI just wanted to ask the procedure of email verification, whats the best method. So far i have a class that stores the information from the register.aspx form, then i send out an email to the user, but what should i send him, should i send the user a guid?. Also my membership class that stores the register data is stored in a session, is this a good idea, becuase if the user session times out then the membership class will be nothing and the user will be prompted to register again in a Session Timeout webpage, is this a good method?
But what if i send the user a guid and then store the user data to the database with the guid and then check the email guid with the corresponding user guid in the database, what should i do?Also i have a Regular expression that checks that the email is valid, its not that good yet and i havent tested it properly, is there free email verification api's out there?
I have an aspx box with with to asp controls; one text box for entering a password and a button for submitting. Now, when the user enters a password he has to click the submit button.
I want to set it up so the after the user enters a password all he has to do is hit the enter key on the keyboad instead of having to click the submit button. I want it to work just like it does on this forum; all I have to do is enter my user name and password and hit the enter key on the keyboad. The only difference is that I only have a password field and not a user name field.
I tried setting the password to autopost back and it didn't work or at least I didn't have the code correct.
There used to a lot of tutorials on the asp.net site and I can't find any of them anymore. Anyway, I'm looking for a tutorial on how to send out an email to the newly registered user for verficiation. After the user checks his/her email and click the link in the email, it automatically unlock the user's account and allow him/her to login to the site. Below is what I have so far:
[Code]....
[Code]....
And verification page_load:
[Code]....
The user does receive the verification email and when he/she click on the link it does come over to the verification.aspx page; however, the user still can't login. When I looked at the status of the user, it's still locked.
We want new user for the application to register. Upon initial/ temporary registration completion, we need to email them a link for verification (like all standard user based WebApplications will do).
I am planning to use CreateUserWizard control in Asp.Net, which could send an email, if the credentials are provided.
As per my knowledge,
we can send this email by providing required credentials and the SMTP server details and that is it. The link in the email will bring back client to one of confirm Registration pages with a unique Id as query string. (as we add the link in email)
My question is, can we do this verification, by sending email as above without having some Emailing Component implemented or I am missing something.
NOTE: using SqlServer 2005, C#
The entire message is Viewstate verification failed. Reason: Viewstate was invalid.
This is getting logged to the eventlog on our "dev" server. It suddenly started to happen. I have been programming locally and I am often (daily, hourly) moving new dll's and pages to the dev server so our BA can test. When my application gets an exception it puts up an error page and there's usually an event logged with "Error" severity - like if an index goes beyond array bounds, etc. The BA is getting the error page, but the message at the time is "Warning" severity and it's this viewstate thing. But the log is indicating it happened in my page. So I don't understand what I could've done to cause it.
I'm using the following code to send an email verification link (from the security tutorials). How would I modify the code below so that if the user has already clicke the verification link, it will display "account already verified" and redirect them to the login page?
using System; using System.Web.Security; public partial class Verification : System.Web.UI.Page
{ protected void Page_Load(object sender, EventArgs e)
{ if (string.IsNullOrEmpty(Request.QueryString["ID"])) [code].....
I am using the register.aspx that came with VS2010 when I create a new website. When a user is created, the user is automatically logged and NOT send in a verification email. I thought I've modified that but it's not working. Here's what I have:
[Code]....
And here's the C# code:
[Code]....