Question

我的小项目是用Java编写的，我需要用C＃重写它。

它差不多完成了，但我仍然坚持使用Selenium webdriver获取元素的截图。我用下一种方式在Java中做到了：

    public String saveImage(){
        String src = "";
        try{
            File screenshot = ((TakesScreenshot)driver).getScreenshotAs(OutputType.FILE);
            BufferedImage fullImg = ImageIO.read(screenshot);
            Point point = elementToScreent.getLocation();
            int eleWidth = elementToScreent.getSize().getWidth();
            int eleHeight = elementToScreent.getSize().getHeight();
            BufferedImage eleScreenshot= fullImg.getSubimage(point.getX(), point.getY(), eleWidth,
            eleHeight);
            ImageIO.write(eleScreenshot, "png", screenshot);
            src = path + System.currentTimeMillis() +".png";
            FileUtils.copyFile(screenshot, new File(src));
    }catch(Exception e){
        e.printstacktrace();
    }
    return src;
}

它在Java中运行得很完美，但我不知道如何用C＃重写它，因为我对它不太熟悉。

有人可以提出一些在C＃中实现相同目标的好方法吗？

Answer 1

在这里，我编写了一些代码，使用c＃

来截取元素的屏幕

 FirefoxDriver driver = null;
    private WebDriverWait wait;

    // Use this function to take screen short of an element.  

public static Bitmap GetElementScreenShort(IWebDriver driver, IWebElement element)
{
    Screenshot sc = ((ITakesScreenshot)driver).GetScreenshot();
    var img = Image.FromStream(new MemoryStream(sc.AsByteArray)) as Bitmap;
    return img.Clone(new Rectangle(element.Location, element.Size), img.PixelFormat);
}
 //testing function
    public void GetIPLocation(string IPAddress)
    {
        try
        {
            if (driver == null)
                driver = new FirefoxDriver();
            if (driver.Title != "IP Location Finder - Geolocation")
                driver.Navigate().GoToUrl("https://www.iplocation.net/");
            if (wait == null)
                wait = new WebDriverWait(driver, TimeSpan.FromSeconds(60));
            var ipTextBox = wait.Until(ExpectedConditions.ElementExists(By.CssSelector("input[type='text']")));

            ipTextBox.Clear();
            ipTextBox.SendKeys(IPAddress);
            wait.Until(ExpectedConditions.ElementExists(By.CssSelector("input[type='submit']"))).Click();

            foreach (IWebElement element in driver.FindElements(By.CssSelector("div>.col.col_12_of_12")))
            {
                if (element.FindElements(By.TagName("h4")).Count > 0)
                {                          
                     var img = GetElementScreenShort(driver, element);
                    img.Save("test.png", System.Drawing.Imaging.ImageFormat.Png);
                }
            }
        }
        catch (Exception)
        {

            throw;
        }
    }

如果有任何问题，请告诉我。

Answer 2

我没有检查代码，但必须能正常工作：

public Bitmap MakeElemScreenshot( IWebDriver driver, WebElement elem)
{
    Screenshot myScreenShot = ((ITakesScreenshot)driver).GetScreenshot();

    Bitmap screen = new Bitmap(new MemoryStream(myScreenShot.AsByteArray));
    Bitmap elemScreenshot = screen.Clone(new Rectangle(elem.Location, elem.Size), screen.PixelFormat);

    screen.Dispose();

    return elemScreenshot;
}

顺便说一下，它是c＃代码。但是java的代码将与此类似。

如何在C＃中使用WebDriver获取指定元素的屏幕截图

2 个答案: