Selenium - Wait until element is NOT visible

Question

In the code below, I attempt to wait until an element is visible:

var wait = new WebDriverWait(Driver.Instance, TimeSpan.FromSeconds(10));
wait.Until(ExpectedCon         


        

Answer 1

The following should wait until the element is no longer displayed i.e. not visible (or time out after 10 seconds)

var wait = new WebDriverWait(Driver.Instance, TimeSpan.FromSeconds(10));
wait.Until(driver => !driver.FindElement(By.Id("processing")).Displayed);

It will throw an exception if an element cannot be found with the id processing.