How to capture a screenshot using Selenium WebDriver?

Answer

Capturing screenshot is easy. Just use the method GetScreenshot() of the Selenium driver. if you are using interface IWebDriver, you will need to cast the driver instance to ITakesScreenshot interface.

C#

try {
  var screenshot = ((ITakesScreenshot)driver).GetScreenshot();
  var screenshotFileName = @"C:\Tests\Screenshots\Screenshot.jpg";
  screenshot.SaveAsFile(screenshotFileName, System.Drawing.Imaging.ImageFormat.Jpeg);
}
catch (System.Exception ex) {
  Console.WrieLine(ex.ToString());
}

Note that the code can fail while generationg screenshot or saving the screenshot to a filesystem so it's always a good practice to use try/catch.