用C#在WebDriver中打开新窗口

Question

编辑4：

编辑2

    string currentWindow = driver.CurrentWindowHandle;

    driver.SwitchTo().Window("");
    string childTitle = driver.Title;

    driver.SwitchTo().Window(currentWindow);
    string parentTitle = driver.Title;

上面的代码为父窗口或子窗口提供了相同的标题。

<a id="ctl00_ctl00_Features_ctl03_lnkPage" class="title" target="_blank" href="websiteaddress">Stay  Around</a>

GoToMysiteUrl();
IWebElement addtoList = driver.FindElement(By.XPath(_pageName));
addtoList.Click();

Answer 1

大多数人在IE中处理弹出窗口时忽略的一点是，对元素的单击是异步的。也就是说，如果在单击后立即检查.windowhandles属性，您可能会失去竞争条件，因为在IE有机会创建新窗口之前，您正在检查新窗口的存在，而驱动程序有机会注册它的存在。

下面是我用来执行相同操作的C#代码：

string foundHandle = null;
string originalWindowHandle = driver.CurrentWindowHandle;

// Get the list of existing window handles.
IList<string> existingHandles = driver.WindowHandles;
IWebElement addtoList = driver.FindElement(By.XPath(_pageName));
addtoList.Click();

// Use a timeout. Alternatively, you could use a WebDriverWait
// for this operation.
DateTime timeout = DateTime.Now.Add(TimeSpan.FromSeconds(5));
while(DateTime.Now < timeout)
{
    // This method uses LINQ, so it presupposes you are running on
    // .NET 3.5 or above. Alternatively, it's possible to do this
    // without LINQ, but the code is more verbose.
    IList<string> currentHandles = driver.WindowHandles;
    IList<string> differentHandles = currentHandles.Except(existingHandles).ToList();
    if (differentHandles.Count > 0)
    {
        // There will ordinarily only be one handle in this list,
        // so it should be safe to return the first one here.
        foundHandle = differentHandles[0];
        break;
    }

    // Sleep for a very short period of time to prevent starving the driver thread.
    System.Threading.Thread.Sleep(250);
}

if (string.IsNullOrEmpty(foundHandle))
{
    throw new Exception("didn't find popup window within timeout");
}

driver.SwitchToWindow(foundHandle);

// Do whatever verification on the popup window you need to, then...
driver.Close();

// And switch back to the original window handle.
driver.SwitchToWindow(originalWindowHandle);

顺便说一句，如果使用.NET绑定，则可以访问WebDriver.support.dll程序集中的PopupWindowfinder类，该类使用与定位弹出窗口非常相似的方法。您可能会发现该类完全符合您的需求，并且无需修改即可使用它。