Google reCAPTCHA using HttpClient in ASP.NET
Introduction reCAPTCHA is a free service that protects your site from spam and abuse. It uses advanced risk analysis techniques to tell humans and bots apart. With the new API, a significant number of your valid human users will pass the reCAPTCHA challenge without having to solve a CAPTCHA . Building The Code Before you start, visit this link https://www.google.com/recaptcha/intro/index.html and click on the Get reCAPTCHA button and follow the steps. Let's Get started Step 1 : Create a class or a method in your controller and add the code below. public async Task<string> GetRecaptcha() { var response = HttpContext.Current.Request["g-recaptcha-response"]; const string secretKey = "your secret key"; var apiConsumer = new ApiConsumer(); const string url = "https://www.google.com/recaptcha/"; apiConsume