Selenium C# WebDriver: Wait until element is present

Question

I want to make sure that an element is present before the webdriver starts doing stuff.

I\'m trying to get something like this to work:

WebDriverWait w         


        

Answer 1

Inspired by Loudenvier's solution, here's an extension method that works for all ISearchContext objects, not just IWebDriver, which is a specialization of the former. This method also supports waiting until the element is displayed.

static class WebDriverExtensions
{
    /// 

    /// Find an element, waiting until a timeout is reached if necessary.
    /// 
    /// The search context.
    /// Method to find elements.
    /// How many seconds to wait.
    /// Require the element to be displayed?
    /// The found element.
    public static IWebElement FindElement(this ISearchContext context, By by, uint timeout, bool displayed=false)
    {
        var wait = new DefaultWait(context);
        wait.Timeout = TimeSpan.FromSeconds(timeout);
        wait.IgnoreExceptionTypes(typeof(NoSuchElementException));
        return wait.Until(ctx => {
            var elem = ctx.FindElement(by);
            if (displayed && !elem.Displayed)
                return null;

            return elem;
        });
    }
}

Example usage:

var driver = new FirefoxDriver();
driver.Navigate().GoToUrl("http://localhost");
var main = driver.FindElement(By.Id("main"));
var btn = main.FindElement(By.Id("button"));
btn.Click();
var dialog = main.FindElement(By.Id("dialog"), 5, displayed: true);
Assert.AreEqual("My Dialog", dialog.Text);
driver.Close();