IWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(3));
IWebElement element = wait.Until(ExpectedConditions.ElementExists(By.Id("foo")));

[FindsBy(How = How.Id, Using = "errorMessage")]
    public IWebElement btnSubmit { get; set; }

CheckElementExists(errorMessage))

public bool CheckElementExists(IWebElement pageObject)
    {
        Browser.getDriver.Manage().Timeouts().ImplicitWait = TimeSpan.FromMilliseconds(100);
        try
        {
            return pageObject.Equals(pageObject);
        }
        catch (NoSuchElementException)
        {
            return false;
        }
        finally
        {
            Browser.getDriver.Manage().Timeouts().ImplicitWait = TimeSpan.FromSeconds(30);
        }
    }