You must Sign In to post a response.
  • Category: ASP.NET

    Want some clarification about creating captcha code

    Good noon How to generate captcha code using asp.net and c#,scanner must need na..whether check if its human or not.so guys want solution thankyou
  • #765069
    There are lot of ways are there to handle it.

    1. You can have list of questions and corresponding answers in your database.
    2. Ask any of the simple question randomly in the registration page(Ex. Show one string ask length of the string, Show some numericals and ask which is grater etc...)
    3. Provide the text box/option box for the user. If the answer is correct you can decide it is not a robot.
    4. The other way is to create random number and show it as a image in the client side. And ask the user to enter the number. In the process you can validate that.

    Following is the link. You can refer my following article for more information

    http://www.dotnetspider.com/resources/28997-Create-your-own-simple-Captcha.aspx
    You can fine the sample code to create captcha

    By Nathan
    Direction is important than speed

  • #765077
    I am not robot -reCapcha option is available by google, you need to register your application at google's reCaptcha website. Click on Get reCAPTCHA button. (check link : https://www.google.com/recaptcha/intro/index.html)
    After Registration you will get Site Key and Secret Key, then add code given in below link
    http://www.codingfusion.com/Post/Google-New-reCaptcha-I-am-not-a-robot-using-asp-n
    hope it helps

    Thanks
    Koolprasd2003
    Editor, DotNetSpider MVM
    Microsoft MVP 2014 [ASP.NET/IIS]


Sign In to post your comments