Captcha Code System in ASP.Net
In this Article, I will explain how to incorporate Captcha Control in ASP.Net. Captcha control helps to avoid spam and generally used in Contact us or Sign Up forms.
Basically the user is shown an image with some characters and user has to fill the same character in a textbox provided, then the content of the image is matched with the textbox and if it matches it ensures that it’s a valid submission and the form gets submitted.
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