namespace TwoCaptcha
{
    public class Scraper
    {
        static void Main(string[] args)
        {
            //...

            // select g-recaptcha-response element
            IWebElement recaptchaResponseElement = driver.FindElement(By.Id("g-recaptcha-response"));

            // set the value of selected element to the CAPTCHA solution
            ((IJavaScriptExecutor)driver).ExecuteScript($"arguments[0].value = '{solution}';", recaptchaResponseElement);

            // click the submit button
            IWebElement submitButton = driver.FindElement(By.CssSelector("#recaptcha-demo-submit"));
            submitButton.Click();

            // take a screenshot
            ((ITakesScreenshot)driver).GetScreenshot().SaveAsFile("screenshot.png");

            // close the browser
            driver.Quit();
        }
    }
}