如何自动控制并传递网页文本框中的值

Question

我想自动加载 url 并获取登录按钮的控制权并在 Visual Studio 中使用 c# 将值传递给文本。我尝试使用 htmlagilitypack 获取控件并在文本框中传递值，我有使用硒网络驱动程序。我能够加载 url 并且无法获得登录按钮的控制并且无法在文本框中传递值。在这种情况下，有人可以帮助我吗？我在过去一周被困住了。我附上了我尝试过的示例代码。

using System;
using HtmlAgilityPack;
using System.IO;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Diagnostics;
using OpenQA.Selenium;
using OpenQA.Selenium.Edge;
using System.Threading;
using System.Threading.Tasks;   

namespace HtmlAgilityPackTest
{​​​​​
    class Program
    {​​​​​
        static void Main(string[] args)
        {​​​​​
            //string driver = "Email";
            string itext = "Sign In";
            //string email = "Email";
            //IWebDriver driver = new EdgeDriver();
            var uri = "https://developer.servicenow.com";
            var psi = new System.Diagnostics.ProcessStartInfo();
            psi.UseShellExecute = true;
            psi.FileName = uri;

            System.Diagnostics.Process.Start(psi);
            //Thread.Sleep(3000);
            var func = string.Format(@"document.getElementsByClass('dps-button-label').innerText = '{​​​​​0}​​​​​';",itext);

            //Thread.Sleep(3000);
                IWebDriver driver = new EdgeDriver();
                IWebElement element = driver.FindElement(By.Name("form-control input-box username-box"));

                element.SendKeys("xyz@gmail.com");  

Answer 1

编辑

您的按钮在很多 shadowRoot 中：您必须执行此功能才能点击登录按钮：

using OpenQA.Selenium;
using OpenQA.Selenium.Firefox;
using OpenQA.Selenium.Support.UI;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Threading;
using System.Threading.Tasks;
using ExpectedConditions = SeleniumExtras.WaitHelpers.ExpectedConditions;

:
:
:
        WebDriverWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(20));

        driver.Manage().Window.Maximize();
        driver.Url = "https://developer.servicenow.com";
        Thread.Sleep(3000);
        IJavaScriptExecutor js = (IJavaScriptExecutor)driver;
        var query = "return document.querySelector('dps-app').shadowRoot";
        query += ".querySelector('dps-navigation-header').shadowRoot";
        query += ".querySelector('dps-login').shadowRoot";
        query += ".querySelector('dps-button')";
        IWebElement elt = (IWebElement)js.ExecuteScript(query);
        elt.Click();
           
        # you have to install SeleniumExtras.WaitHelpers nugget package fo that
        wait.Until(ExpectedConditions.ElementExists(By.Id("username"))).SendKeys("xyz@gmail.com");
        wait.Until(ExpectedConditions.ElementToBeClickable(By.Id("usernameSubmitButton"))).Click();

        wait.Until(ExpectedConditions.ElementExists(By.Id("username"))).SendKeys("email@toto.fr");
        wait.Until(ExpectedConditions.ElementToBeClickable(By.Id("usernameSubmitButton"))).Click();
        var but = wait.Until(ExpectedConditions.ElementToBeClickable(By.Id("submitButton")));
        driver.FindElement(By.Id("password")).SendKeys("password");
        but.Click();

在执行此代码之前，等待 3 或 5 秒以确保页面 html 已完全加载

所以我没有 EDGE，我用 firefox 测试过