WebDriverWait 不等待我指定的元素

问题描述

我试图让我的代码在尝试从元素中获取文本之前等待元素出现.如果我单步执行允许元素时间出现的代码，它会按预期工作，但如果我在没有断点的情况下运行它，等待似乎会被忽略并引发异常.

I am trying to get my code to wait for an element to appear before trying to get the text from the element. If I step through the code allowing the element time to appear it works as expected, but if I run it without breakpoints the wait appears to be ignored and an exception is raised.

我不明白为什么它被忽略了?

I don't understand why it is being ignored?

WebDriverWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(30));
IWebElement message = wait.Until(driver => driver.FindElement(By.ClassName("block-ui-message")));
string messageText = message.Text;

推荐答案

作为替代方案，您可以为 ElementIsVisible() 引入 WebDriverWait，您可以使用以下 定位器策略:

As an alternative you can induce WebDriverWait for the ElementIsVisible() and you can use the following Locator Strategy:

string messageText = new WebDriverWait(driver, TimeSpan.FromSeconds(30)).Until(ExpectedConditions.ElementIsVisible(By.ClassName("block-ui-message"))).GetAttribute("innerHTML");

<小时>

将 DotNetSeleniumExtras.WaitHelpers 与 nuget 一起使用:

不太清楚你所说的我需要的具体使用指令到底是什么意思.如果您使用的是 SeleniumExtras 和 WaitHelpers，您可以使用以下解决方案:

Using DotNetSeleniumExtras.WaitHelpers with nuget:

Not that super clear what exactly you meant by specific using directive I need. In-case you are using SeleniumExtras and WaitHelpers you can use the following solution:

string messageText = new WebDriverWait(driver, TimeSpan.FromSeconds(10)).Until(SeleniumExtras.WaitHelpers.ExpectedConditions.ElementIsVisible(By.ClassName("block-ui-message"))).GetAttribute("innerHTML");

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