How to control Chrome Downloads page Using Selenium c

Question

I'm trying to manipulate "chrome://downloads/" URL using Selenium.

My objective is to

• Start a download,
• Make sure that download get start
• Cancel the download

But the problem is that I´m not able to get the values of the downloads or cancel.

It shows an error:  that my id isn't correct. Does anyone know if there any restriction to this kind of page?

Below is my code:

using System;

using System.IO;

using System.Net;

using System.Net.Sockets;

using System.Text.RegularExpressions;

using System.Threading;

using OpenQA.Selenium.Chrome;

using OpenQA.Selenium.Firefox;

namespace SitesApplications

{

    class Program

    {

        static void Main(string[] args)

        {

           BrowseUrl.driver = new ChromeDriver();

            //ChromeOptions TESTE = new ChromeOptions();

            //TESTE.AddArgument("--disable-privacy");

            FileDownload teste = new FileDownload("https://img.cs.montana.edu/linux/centos/7.4.1708/isos/x86_64/", 60);


            teste.gotoDownloadList("chrome://downloads/", 60);


            //ChromeWebElement haha = new ChromeWebElement(BrowseUrl.DriverChrome, "pause-or-resume");


            ////haha.Clicks(20);


            //haha.Cliquei(20);


            teste.CancelaTeste(10);


        }


    }

Program Calls

using OpenQA.Selenium;

using OpenQA.Selenium.Support.PageObjects;

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;


namespace SitesApplications

{

    class FileDownload

    {

        /// <summary>

        /// Enta no link direto para o download.

        /// </summary>

        /// <param name="Url">Link de destino para o download.</param>

        /// <param name="time">Tempo maximo para abertura da pagina.</param>

        public FileDownload(string Url, int time)

        {

            BrowseUrl CentOs = new BrowseUrl(Url, time);

            PageFactory.InitElements(BrowseUrl.driver, this);

        }


        public void gotoDownloadList(string url, int timeout)

        {


            BrowseUrl downList = new BrowseUrl(url, timeout);

            PageFactory.InitElements(BrowseUrl.driver, this);


        }


        private bool barra_prog;


        public bool barraprog

        {

            get { return barra_prog; }

Answer 1

In your case you must replace 'cancel' by 'Cancelar'.

Check this Question : Accessing Shadow DOM tree with Selenium

Read this article on Shadow DOM Elements here: http://www.seleniumeasy.com/selenium-tutorials/accessing-shadow-dom-elements-with-webdriver.To know how to handle the Chrome download page you must know how to handle Shadow DOM Elements. I tried a lot of different solutions before I finally managed to get the one below working:

 IJavaScriptExecutor jse2 = (IJavaScriptExecutor)Driver;

        jse2.ExecuteScript("return document.querySelector('downloads-manager').shadowRoot.querySelector('downloads-item').shadowRoot.getElementById('cancel').click()");