Captcha Image using C# in ASP.NET

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8 Responses

  1. bennny says:

    can you give coding’s for good designed calculation captcha

    • Admin says:

      Hi Bennny,
      Thanks for you comments… In sort time we will come back to you with new article about mathematical captcha in ASP.NET.
      So keep in touch…

      Share our articles with your friends…

  2. palanis says:

    i have use same code but image not show how can image display can you help me ji

    • Admin says:


      Have you check the references dll that will properly set in the location or can you please download the source code and compare it with your code.

      If anything then let us know.

      Keep in touch…
      Share articles with your friends…

  3. vasundhara says:

    sir,iam getting an error like this.

    “An ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode.”

  4. rajesh says:

    how i can set CaptchaMinTimeout = 5 minuts because it expire due to long form

  5. Badal Dangaich says:

    When i run my project the captcha image was not shown

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