hi
Please see the Steps Below.
Installation instruction:
1.Unzip the downloaded file.
2.Copy MSCaptcha.dll and MSCaptcha.xml files to your /bin application directory.
3.In your ASP.NET application, add reference to mscaptcha.dll file.
4.Modify your web.config file, by adding this line to <httphandlers> section:
<add verb="GET" path="CaptchaImage.axd" type="MSCaptcha.CaptchaImageHandler, MSCaptcha " />
5.If using IIS 7, add name parameter .
6.If using Captcha version 4, use "MSCaptcha.captchaImageHandler" instead.
7.Add MSCaptcha control to your Visual Studio toolbox (optional)
That's it!
Downloading your FREE copy:
From here
1.
Captcha version 2.0 for .NET
2.Captcha version 4.0 for .NET framework 4
Thanks
Mordhwaj Chauhan