C#操作网页WebBorowser和Selenium方法

方法一：使用Winform 的WebBorowser控件操控网页

page_load

{

webBrowser1.DocumentCompleted += WebBorowser1_DocumentCompleted;

//Load web
webBrowser1.Navigate("https://website/test.com");

}

private void WebBorowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
System.Drawing.Rectangle screenSize = Screen.PrimaryScreen.Bounds;
webBrowser1.Width = screenSize.Width;
webBrowser1.Height =screenSize.Height;

    //    //webBrowser1.Width = webBrowser1.Document.Body.ScrollRectangle.Width;
     //    //webBrowser1.Height = webBrowser1.Document.Body.ScrollRectangle.Height;

        HtmlElement element = webBrowser1.Document.GetElementsByTagName("a")[0];

       if (element != null)
        {
            string elementContent = element.InnerText;
             MessageBox.Show(elementContent);

   
         }
         else
        {
            MessageBox.Show("Not Found.");
        }

       //HtmlElementCollection elements = webBrowser1.Document.GetElementsByTagName("input"); // 替换为你要查找的元素标签名                   //foreach (HtmlElement element in elements)

   // {

    //if (element.GetAttribute("value") == "按钮的文本") // 替换为按钮的文本或其他属性

    // {

    //element.InvokeMember("click"); // 点击按钮 break;

     //}

}

     }

//截图保存
//private void SavePic()
//{
// Bitmap bitmap = new Bitmap(webBrowser1.Width, webBrowser1.Height);

     //    webBrowser1.DrawToBitmap(bitmap, new System.Drawing.Rectangle(0, 0, webBrowser1.Width, webBrowser1.Height));
     //    bitmap.Save("test.png", System.Drawing.Imaging.ImageFormat.Png);

    //    MessageBox.Show("Picture Save Done");
     //}

方法二：使用Selenium操控网页

安装Selenium及对应浏览器驱动

using (var driver = new EdgeDriver())
{
driver.Navigate().GoToUrl("https://website/test.com");

            driver.Manage().Window.Maximize();
             //等待某元素出现并截图

            //wait.Until(ExpectedConditions.ElementIsVisible(By.Id("lab1")));
             //var screenshot=((ITakesScreenshot)driver).GetScreenshot();
             //screenshot.SaveAsFile("test.png");
             try
             {
                 WebDriverWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(2));

                //等待直到标题出现
                 //wait.Until(d=>d.Title.Contains("Example Domain"));

                //等待特定元素出现
                 wait.Until(d => d.FindElement(By.Id("lab1")).Displayed);
                 wait.Until(d => d.FindElement(By.Id("checkbox1")).Displayed);

                wait.Until(d => d.FindElement(By.Id("btn1")).Displayed);
                 IWebElement checkbox = driver.FindElement(By.Id("checkbox1"));

              //勾选框操作
                 if (checkbox.Selected == false)
                 {
                     checkbox.Click();
                 }
                 
                 //查找按钮元素并点击
                 IWebElement buttonElement = driver.FindElement(By.Id("btn1"));

                buttonElement.Click();
                 //wait.Until(d => d.FindElement(By.Id("btn_system")).Displayed);

                //执行JavaScript脚本来滚动页面
                 //IJavaScriptExecutor js = (IJavaScriptExecutor)driver;
                 //js.ExecuteScript("window.scrollTo(0,document.body.scrollHeight)");
                 //滚动到某个元素位置
                 //js.ExecuteScript("arguments[0].scrollIntoView(true);",targetElement);

                System.Threading.Thread.Sleep(TimeSpan.FromSeconds(3));
                 
             }
             catch
             {
                 //....
             }
             
         }