问等待使用Selenium加载框架

EN

//wait for 10 seconds max for the frame
WebDriverWaitwait = new WebDriverWait(driver, TimeSpan.FromSeconds(10));
wait.Until(SeleniumExtras.WaitHelpers.ExpectedConditions.FrameToBeAvailableAndSwitchToIt(By.Id("FRAMEID")));

     protected void SwitchToFrame(int iframe = 1)
    {
        var driver = GetWebDriver();
        driver.SwitchTo().DefaultContent();
        bool done = false, timeout = false;
        int counter = 0;
        do
        {
            counter++;
            try
            {
                driver.SwitchTo().Frame(iframe);
                done = true;
            }
            catch (OpenQA.Selenium.NoSuchFrameException)
            {
                if (counter <= Constants.GLOBAL_MAX_WAIT_SEC)
                {
                    Wait(1);
                    continue;
                }
                else timeout = true;
            } 
        } while (!done && !timeout);
        if (timeout) throw new OpenQA.Selenium.NoSuchFrameException(iframe.ToString());
    }