How to take reCaptcha image in selenium C#
Edit-1
Below code works fine for me and gives 16 images
ChromeDriver _driver; _driver = new ChromeDriver(); _driver.Url = "https://www.google.com/recaptcha/api2/demo"; Thread.Sleep(5000); _driver.SwitchTo().Frame(_driver.FindElement(By.CssSelector("iframe[src*='recaptcha']"))); _driver.FindElement(By.ClassName("recaptcha-checkbox-checkmark")).Click(); Thread.Sleep(2000); //_driver.SwitchTo().Frame(_driver.FindElement(By.CssSelector("iframe[src*='recaptcha']"))); _driver.SwitchTo().DefaultContent(); _driver.SwitchTo().Frame(_driver.FindElements(By.TagName("iframe"))[1]); images = _driver.FindElements(By.CssSelector("img")); Console.WriteLine(images.Count.ToString());Original Answer
Your issue is the below statement
_driver.SwitchTo().Frame(0);You are assuming there is just one frame. But there are multiple frames
You need to use
_driver.SwitchTo().Frame(_driver.FindElement(By.Css("iframe[src*='recaptcha']")));