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How to use Worker class of PuppeteerSharp package

Best Puppeteer-sharp code snippet using PuppeteerSharp.Worker

WorkerActivities.cs

Source:WorkerActivities.cs

...12    using Microsoft.Extensions.Options;13    using Newtonsoft.Json;14    using OpenScraping.Config;15    using PuppeteerSharp;16    public static class WorkerActivities17    {18        // A) Create login and return [cookies]19        [FunctionName("Authenticate")]20        public static async Task<string> Authenticate(21                [ActivityTrigger] DurableActivityContext ctx,22                TraceWriter log)23        {24            var credentials = ctx.GetInput<string>();25            var browser = await Puppeteer.ConnectAsync(new ConnectOptions { BrowserWSEndpoint = Constants.BrowserWSEndpoint });26            var page = await browser.NewPageAsync();27            var login = new UIAction.Login();28            CookieParam[] cookies = null;29            cookies = await login.RunAsync(page, log);30            // page is closed implicitly31            browser.Disconnect();32            if (cookies != null)33            {34                return CookieConverter.EncodeCookie(cookies);35            }36            throw new Exception("Failed to authenticate.");37        }38        // A) Accept search query and cookies return [totalpages]39        [FunctionName("QueryGuru")]40        public static async Task<int> QueryGuru(41                [ActivityTrigger] DurableActivityContext ctx,42                TraceWriter log)43        {44            var arguments = ctx.GetInput<Tuple<string, string>>();45            var searchargs = arguments.Item1.Split(':');46            if (searchargs.Length != 2)47            {48                throw new ArgumentException("Activity.QueryGuru: Expected search query to be in format <query>:<type>");49            }50            var query = searchargs[0];51            var type = searchargs[1];52            var cookies = CookieConverter.DecodeCookie(arguments.Item2);53            var browser = await Puppeteer.ConnectAsync(new ConnectOptions { BrowserWSEndpoint = Constants.BrowserWSEndpoint });54            var page = await browser.NewPageAsync();55            await page.SetCookieAsync(cookies);56            var search = new UIAction.NavigateSearch(query, type);57            var pages = await search.RunAsync(page);58            browser.Disconnect();59            return pages;60        }61        // O) Accept search query and cookies and page and configsection then return result62        [FunctionName("RetrievePageContent")]63        public static async Task<WorkerResult> RetrievePageContent(64                [ActivityTrigger] DurableActivityContext ctx,65                TraceWriter log)66        {67            var arguments = ctx.GetInput<Tuple<string, string, int, string>>();68            var searchargs = arguments.Item1.Split(':');69            if (searchargs.Length != 2)70            {71                throw new ArgumentException("Activity.QueryGuru: Expected search query to be in format <query>:<type>");72            }73            var query = searchargs[0];74            var type = searchargs[1];75            var cookies = CookieConverter.DecodeCookie(arguments.Item2);76            var pagenumber = arguments.Item3;77            var config = JsonConvert.DeserializeObject<ConfigSection>(arguments.Item4);78            var browser = await Puppeteer.ConnectAsync(new ConnectOptions { BrowserWSEndpoint = Constants.BrowserWSEndpoint });79            var page = await browser.NewPageAsync();80            await page.SetCookieAsync(cookies);81            var search = new UIAction.NavigateSearch(query, type, true);82            await search.RunAsync(page);83            var collect = new UIAction.NavigateCollect(pagenumber, ctx.InstanceId, ctx.InstanceId, config);84            var result = await collect.RunAsync(page);85            // page is closed implicitly86            browser.Disconnect();87            var customresult = new WorkerResult { html = result, page = pagenumber };88            return customresult;89        }90        // A) Accept number of pages and return a range from 1 to number of pages91        [FunctionName("CreateWorkload")]92        public static async Task<List<int>> CreateWorkload(93                [ActivityTrigger] DurableActivityContext ctx,94                TraceWriter log)95        {96            var totalpages = ctx.GetInput<int>();97            var workload = Enumerable.Range(1, totalpages).ToList();98            return await Task.FromResult(workload);99        }100        // A) Accept number of pages and return a range from 1 to number of pages101        [FunctionName("RaiseFinishedEvent")]102        public static async Task RaiseFinishedEvent(103                [ActivityTrigger] DurableActivityContext ctx,104                [OrchestrationClient] DurableOrchestrationClient client,105                TraceWriter log)106        {107            var args = ctx.GetInput<WorkerWorkResult>();108            var instanceid = args.instanceid;109            var reason = args.result;110            await client.RaiseEventAsync(instanceid, "Finished", reason);111        }112        [FunctionName("RetrieveScrapingConfig")]113        public static async Task<ConfigSection> RetrieveScrapingConfig(114                [ActivityTrigger] DurableActivityContext ctx,115                [Blob("config/propertyrecord.json", Connection = "StorageAccount")] TextReader file,116                TraceWriter log)117        {118            var configjson = await file.ReadToEndAsync();119            var config = OpenScraping.Config.StructuredDataConfig.ParseJsonString(configjson);120            return await Task.FromResult(config);121        }122    // [FunctionName("A_InitBrowser")]123    //    public static async Task<string> InitBrowser(124    //        [ActivityTrigger] DurableActivityContext ctx,125    //        TraceWriter log)126    //    {127    //        var connectionstring = ctx.GetInput<string>();128    //        var browser = await Puppeteer.ConnectAsync(new ConnectOptions { BrowserWSEndpoint = connectionstring });129    //        var json = JsonConvert.SerializeObject(browser, Formatting.None, new JsonSerializerSettings { PreserveReferencesHandling = PreserveReferencesHandling.All, TypeNameAssemblyFormatHandling = TypeNameAssemblyFormatHandling.Full });130    //        return json;131    //    }132    // [FunctionName("A_InitBrowserPage")]133    //    public static async Task<Page> InitBrowserPage(134    // [ActivityTrigger] DurableActivityContext ctx,135    // TraceWriter log)136    //    {137    //        var browser = ctx.GetInput<Browser>();138    //        var page = await browser.NewPageAsync();139    //        return page;140    //    }141    // [FunctionName("A_ScrapeSingle")]142    //    public static async Task<Model.WorkerResult> ScrapeSingle(143    //        [ActivityTrigger] DurableActivityContext ctx,144    //        TraceWriter log )145    //    {146    //        var workerid = "AAAA";147    //        var workerargsjson = ctx.GetInput<string>();148    //        log.Warning(workerargsjson);149    //        var workerargs = JsonConvert.DeserializeObject<Model.WorkerArgs>(workerargsjson);150    //        var asm = Assembly.Load("Microsoft.Extensions.Options, Culture=neutral, PublicKeyToken=adb9793829ddae60");151    //        PuppeteerSharp.Browser browser = null;152    //        try153    //        {154    //           // await workerargs.Action.RunAsync(workerargs.Page);155    //        }156    //        catch (Exception ex)157    //        {158    //            return new Model.WorkerResult() { WorkerId= workerid, Success=false };159    //        }160    //        finally161    //        {162    //            if (browser != null)163    //            {164    //                browser.Disconnect();165    //            }166    //        }167    //        return new Model.WorkerResult() { WorkerId= workerid, Success=true };168    //    }169    // [FunctionName("A_TestSingle")]170    //    public static async Task<string> TestSingle(171    // [ActivityTrigger] DurableActivityContext ctx,172    // TraceWriter log)173    //    {174    //        var workerid = "AAAA";175    //        var workerargsjson = ctx.GetInput<string>();176    //        log.Warning(workerargsjson);177    //        PuppeteerSharp.Browser browser = null;178    //        try179    //        {180    //            //await Task.Delay(1000);181    //            return "Yes";...

Worker.cs

Source:Worker.cs

...4using System.Threading.Tasks;5namespace PuppeteerSharp6{7    /// <summary>8    /// The Worker class represents a WebWorker (<see href="https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API"/>).9    /// The events <see cref="Page.WorkerCreated"/> and <see cref="Page.WorkerDestroyed"/> are emitted on the page object to signal the worker lifecycle.10    /// </summary>11    /// <example>12    /// <code>13    /// <![CDATA[14    /// page.WorkerCreated += (sender, e) => Console.WriteLine('Worker created: ' + e.Worker.Url);15    /// page.WorkerDestroyed += (sender, e) => Console.WriteLine('Worker destroyed: ' + e.Worker.Url);16    /// for (var worker of page.Workers)17    /// {18    ///     Console.WriteLine('  ' + worker.Url);19    /// }20    /// ]]>21    /// </code>22    /// </example>23    public class Worker24    {25        private readonly CDPSession _client;26        private ExecutionContext _executionContext;27        // private readonly Func<ConsoleType, JSHandle[], StackTrace, Task> _consoleAPICalled;28        private readonly Action<EvaluateExceptionResponseDetails> _exceptionThrown;29        private readonly TaskCompletionSource<ExecutionContext> _executionContextCallback;30        private Func<ExecutionContext, RemoteObject, JSHandle> _jsHandleFactory;31        internal Worker(32            CDPSession client,33            string url,34            Func<ConsoleType, JSHandle[], Task> consoleAPICalled,35            Action<EvaluateExceptionResponseDetails> exceptionThrown)36        {37            _client = client;38            Url = url;39            _exceptionThrown = exceptionThrown;40            _client.MessageReceived += OnMessageReceived;41            _executionContextCallback = new TaskCompletionSource<ExecutionContext>(TaskCreationOptions.RunContinuationsAsynchronously);42            _ = _client.SendAsync("Runtime.enable").ContinueWith(task =>43            {44            });45            _ = _client.SendAsync("Log.enable").ContinueWith(task =>46            {47            });48        }49        /// <summary>50        /// Gets the Worker URL.51        /// </summary>52        /// <value>Worker URL.</value>53        public string Url { get; }54        internal void OnMessageReceived(object sender, MessageEventArgs e)55        {56            try57            {58                switch (e.MessageID)59                {60                    case "Runtime.executionContextCreated":61                        OnExecutionContextCreated(e.MessageData.ToObject<RuntimeExecutionContextCreatedResponse>(true));62                        break;63                    //case "Runtime.consoleAPICalled":64                    //    await OnConsoleAPICalled(e).ConfigureAwait(false);65                    //    break;66                    case "Runtime.exceptionThrown":67                        OnExceptionThrown(e.MessageData.ToObject<RuntimeExceptionThrownResponse>(true));68                        break;69                }70            }71            catch (Exception ex)72            {73                var message = $"Worker failed to process {e.MessageID}. {ex.Message}. {ex.StackTrace}";74                _client.Close(message);75            }76        }77        private void OnExceptionThrown(RuntimeExceptionThrownResponse e) => _exceptionThrown(e.ExceptionDetails);78        private void OnExecutionContextCreated(RuntimeExecutionContextCreatedResponse e)79        {80            if (_jsHandleFactory == null)81            {82                _jsHandleFactory = (ctx, remoteObject) => new JSHandle(ctx, _client, remoteObject);83                _executionContext = new ExecutionContext(84                    _client,85                    e.Context,86                    null);87                _executionContextCallback.TrySetResult(_executionContext);...

ServiceWorkerController.cs

Source:ServiceWorkerController.cs

1ï»¿using Microsoft.AspNetCore.Mvc;2using Microsoft.Extensions.Logging;3using PuppeteerSharp;4using PWABuilder.ServiceWorkerDetector.Models;5using PWABuilder.ServiceWorkerDetector.Services;6using System;7using System.Collections.Generic;8using System.Linq;9using System.Threading.Tasks;10namespace PWABuilder.ServiceWorkerDetector.Controllers11{12    [ApiController]13    [Route("[controller]/[action]")]14    public class ServiceWorkerController : ControllerBase15    {16        private readonly PuppeteerDetector puppeteerSwDetector;17        private readonly AllDetectors allDetectors;18        public ServiceWorkerController(19            PuppeteerDetector puppeteerSwDetector,20            AllDetectors allDetectors)21        {22            this.puppeteerSwDetector = puppeteerSwDetector;23            this.allDetectors = allDetectors;24        }25        [HttpGet]26        public ActionResult Index()27        {28            return File("~/index.html", "text/html");29        }30        [HttpGet]31        public Task<ServiceWorkerDetectionResult> RunAllChecks(Uri url)32        {33            return this.allDetectors.Run(url);34        }35        public async Task<ServiceWorkerDetectionResult> EnsureServiceWorkerFound(Uri url)36        {37            var result = await this.puppeteerSwDetector.Run(url, cacheSuccessfulResults: false);38            if (!result.HasSW)39            {40                throw new InvalidOperationException($"No service worker found for {url}. Timed out: {result.ServiceWorkerDetectionTimedOut}, Details: {result.NoServiceWorkerFoundDetails}");41            }42            return result;43        }44        [Obsolete("Used only for back compat with PWABuilder web site v2. V3 has it all included in the RunAllChecks result.")]45        [HttpGet]46        public Task<bool> GetPeriodicSyncStatus(Uri url)47        {48            return this.puppeteerSwDetector.GetPeriodicSyncStatus(url);49        }50        [HttpGet]51        public Task<bool> GetOfflineSupport(Uri url)52        {53            return this.puppeteerSwDetector.GetOfflineSupport(url);54        }...

PuppeteerBrowser.cs

Source:PuppeteerBrowser.cs

...5using System.Collections.Generic;6using System.IO;7using System.Text;8using System.Threading.Tasks;9namespace Screenshot.Worker.Browser10{11    // Simply wraps Puppeteer.Browser12    class PuppeteerBrowser : IBrowser13    {14        private readonly string _outputDir;15        private PuppeteerSharp.Browser _browser;16        private IOptionsMonitor<BrowserConfiguration> _options;17        private ILogger _logger;18        public PuppeteerBrowser(IOptionsMonitor<BrowserConfiguration> optionsAccessor, ILogger<PuppeteerBrowser> logger) 19        {20            _logger = logger;21            _options = optionsAccessor;22            _outputDir = _options.CurrentValue.OutputDirectory;23            // This can definitely fail and probably shouldn't be in a constructor, but......

ConcurrentBrowserActivities.cs

Source:ConcurrentBrowserActivities.cs

...39                }40            }41            return $"Processed {url} shit all.";42        }43        [FunctionName("A_Worker")]44        public static async Task<string> Worker(45        [ActivityTrigger] DurableActivityContext ctx,46        TraceWriter log47        )48        {49            return "";50        }51    }52    public static class Constants53    {54        public static string BrowserWSEndpoint = "ws://localhost:9222/devtools/browser/d326cbdc-0779-41de-bfb4-18d89e3bd310";55    }56}...

ServiceWorkerExistsResult.cs

Source:ServiceWorkerExistsResult.cs

1ï»¿using PuppeteerSharp;2using System;3using System.Diagnostics.CodeAnalysis;4namespace PWABuilder.ServiceWorkerDetector.Models5{6    public class ServiceWorkerExistsResult : IDisposable7    {8        public ServiceWorkerExistsResult(ServiceWorkerDetails worker, Page page, Browser browser)9        {10            this.Worker = worker;11            this.Page = page;12            this.Browser = browser;13        }14        public ServiceWorkerExistsResult(string notFoundDetails, bool timedOut, Page? page, Browser browser)15        {16            this.NoServiceWorkerFoundDetails = notFoundDetails;17            this.TimedOut = timedOut;18            this.Page = page;19            this.Browser = browser;20        }21        public ServiceWorkerDetails? Worker { get; }22        public string? NoServiceWorkerFoundDetails { get; }23        public bool TimedOut { get; }24        public Browser Browser { get; }25        public Page? Page { get; }26        [MemberNotNullWhen(true, nameof(Worker), nameof(Page))]27        public bool ServiceWorkerDetected => Worker != null && Page != null;28        public void Dispose()29        {30            Page?.Dispose();31            Browser.Dispose();32            GC.SuppressFinalize(this);33        }34    }35}

TargetType.cs

Source:TargetType.cs

...22        /// <summary>23        /// Target type service worker.24        /// </summary>25        [EnumMember(Value = "service_worker")]26        ServiceWorker,27        /// <summary>28        /// Target type browser.29        /// </summary>30        [EnumMember(Value = "browser")]31        Browser,32        /// <summary>33        /// Target type background page.34        /// </summary>35        [EnumMember(Value = "background_page")]36        BackgroundPage,37        /// <summary>38        /// Target type worker.39        /// </summary>40        [EnumMember(Value = "worker")]41        Worker,42    }43}...

ServiceWorkerDetails.cs

Source:ServiceWorkerDetails.cs

2using System;3using System.Collections.Generic;4using System.Linq;5using System.Threading.Tasks;6namespace PWABuilder.ServiceWorkerDetector.Models7{8    public class ServiceWorkerDetails9    {10        public ServiceWorkerDetails(Target target, Uri uri)11        {12            this.Target = target;13            this.Uri = uri;14        }15        public Target Target { get; }16        public Uri Uri { get; }17    }18}...

Worker

Using AI Code Generation

1using PuppeteerSharp;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            {9                Args = new string[] { "--no-sandbox" }10            };11            using (var browser = await Puppeteer.LaunchAsync(options))12            using (var page = await browser.NewPageAsync())13            {14                await page.ScreenshotAsync("example.png");15            }16        }17    }18}19const puppeteer = require('puppeteer');20(async () => {21  const browser = await puppeteer.launch();22  const page = await browser.newPage();23  await page.screenshot({path: 'example.png'});24  await browser.close();25})();26const { chromium } = require('playwright');27(async () => {28  const browser = await chromium.launch();29  const context = await browser.newContext();30  const page = await context.newPage();31  await page.screenshot({ path: `example.png` });32  await browser.close();33})();34using PlaywrightSharp;35using System;36using System.Threading.Tasks;37{38    {39        static async Task Main(string[] args)40        {41            using var playwright = await Playwright.CreateAsync();42            await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions43            {44                Args = new string[] { "--no-sandbox" }45            });46            var context = await browser.NewContextAsync();47            var page = await context.NewPageAsync();48            await page.ScreenshotAsync("example.png");49        }50    }51}52using OpenQA.Selenium;53using OpenQA.Selenium.Chrome;54using OpenQA.Selenium.Remote;55using System;56using System.Collections.Generic;57using System.Linq;58using System.Text;59using System.Threading.Tasks;

Worker

Using AI Code Generation

1using PuppeteerSharp;2using System;3using System.Threading.Tasks;4{5    {6        static void Main(string[] args)7        {8            MainAsync().Wait();9        }10        static async Task MainAsync()11        {12            var browser = await Puppeteer.LaunchAsync(new LaunchOptions13            {14                Args = new[] { "--no-sandbox" }15            });16            var page = await browser.NewPageAsync();17            Console.WriteLine(await page.GetContentAsync());18            await browser.CloseAsync();19        }20    }21}22using PuppeteerSharp;23using System;24using System.Threading.Tasks;25{26    {27        static void Main(string[] args)28        {29            MainAsync().Wait();30        }31        static async Task MainAsync()32        {33            var browser = await Puppeteer.LaunchAsync(new LaunchOptions34            {35                Args = new[] { "--no-sandbox" }36            });37            var page = await browser.NewPageAsync();38            await page.ScreenshotAsync("google.png");39            await browser.CloseAsync();40        }41    }42}43using PuppeteerSharp;44using System;45using System.Threading.Tasks;46{47    {48        static void Main(string[] args)49        {50            MainAsync().Wait();51        }52        static async Task MainAsync()53        {54            var browser = await Puppeteer.LaunchAsync(new LaunchOptions55            {56                Args = new[] { "--no-sandbox" }57            });58            var page = await browser.NewPageAsync();59            await page.ScreenshotAsync("google.png");60            await page.PdfAsync("google.pdf");61            await browser.CloseAsync();62        }63    }64}65ing PuppeteerSharp;;66using System;67{68    {69        static void Main(string[] args)70        {

Worker

Using AI Code Generation

1ususing Worker = PuppeteerSharp.Worker;2using PuppeteerSharp;3ing System;;4{5    {6        static void Main(string[] args)7        {8            MainAsync(args).GetAwaiter().GetResult();9        }10        static async Task MainAsync(string[] args)11        {12            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);13            using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false }))14            using (var page = await browser.NewPageAsync())15            {16                await page.GoToAsync("https:uswww.google.com");17                Console.WriteLine("page title: " + page.Title);18                await page.WaitForSelectorAsync("input[name=q]");19                await page.TypeAsync("input[name=q]", "puppeteer");20                await page.ClickAsync("input[valie=Google Search]");21                await page.WaitForNavigationAsync();22                Connole.WriteLg e("page title: " + paSe.Title);23                awaitypage.screenshotAstnc("google.png");24                Console.WriteLine("screenshot saved");25                await worker.EvaluateExpressionAeync("documenm.querySel.ctor('input[naTe=q]')")h26            }reading.Tasks;27        }28    }29}30usspacPuppeteereharp;31using S Cons;32using SystemoThreading.Tasks;33{34    {35        static void Main(string[] args)36        {37            MainAsync(args).GetAwaiter().GetResult();38        }39        static async Task MainAsync(string[] args)40        {41            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);42            using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false }))43            using (var page = await browser.NewPageAsync())44            {45                Console.WriteLine("page title: " + page.Title);46                await page.WaitForSelectorAsync("input[name=q]");47                await page.TypeAsync("input[name=q]", "puppeteer");48                await page.ClickAsync("input[value=Google Search]");49                await page.WaitForNavigationAsync();50                Console.WriteLine("page title: " + page.Title);51                await page.ScreenshotAsync("google.png");52                Console.WriteLine("screenshot saved

Worker

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            var browser = await Puppeteer.LaunchAsync(new LaunchOptions9            {10            });11            var page = await browser.NewPageAsync();12            await page.ScreenshotAsync("example.png");13            await browser.CloseAsync();14        }15    }16}17using System;18using System.Threading.Tasks;19using PuppeteerSharp;20{21    {22        static async Task Main(string[] args)23        {24            var browser = await Puppeteer.LaunchAsync(new LaunchOptions25            {26            });27            var page = await browser.NewPageAsync();28            await page.ScreenshotAsync("example.png");29            await browser.CloseAsync();30        }31    }32}33using System;34using System.Threading.Tasks;35using PuppeteerSharp;36{37    {38        static async Task Main(string[] args)39        {40            var browser = await Puppeteer.LaunchAsync(new LaunchOptions41            {42            });43            var page = await browser.NewPageAsync();44            await page.ScreenshotAsync("example.png");45            await browser.CloseAsync();46        }47    }48}49using System;50using System.Threading.Tasks;51using PuppeteerSharp;52{53    {

Worker

Using AI Code Generation

1{2    {3        static void Main(string[] args)4        {5            MainAsync().Wait();6        }7        static async Task MainAsync()8        {9            var browser = await Puppeteer.LaunchAsync(new LaunchOptions10            {11                Args = new[] { "--no-sandbox" }12            });13            var page = await browser.NewPageAsync();14            Console.WriteLine(await page.GetContentAsync());15            await browser.CloseAsync();16        }17    }18}19using PuppeteerSharp;20using System;21using System.Threading.Tasks;22{23    {24        static void Main(string[] args)25        {26            MainAsync().Wait();27        }28        static async Task MainAsync()29        {30            var browser = await Puppeteer.LaunchAsync(new LaunchOptions31            {32                Args = new[] { "--no-sandbox" }33            });34            var page = await browser.NewPageAsync();35            await page.ScreenshotAsync("google.png");36            await browser.CloseAsync();37        }38    }39}40using PuppeteerSharp;41using System;42using System.Threading.Tasks;43{44    {45        static void Main(string[] args)46        {47            MainAsync().Wait();48        }49        static async Task MainAsync()50        {51            var browser = await Puppeteer.LaunchAsync(new LaunchOptions52            {53                Args = new[] { "--no-sandbox" }54            });55            var page = await browser.NewPageAsync();56            await page.ScreenshotAsync("google.png");57            await page.PdfAsync("google.pdf");58            await browser.CloseAsync();59        }60    }61}62}

Worker

Using AI Code Generation

1using PuppeteerSharp;2using System;3using System.Threading.Tasks;4{5    {6        static void Main(string[] args)7        {

Worker

Using AI Code Generation

1using PuppeteerSharp;2using System;3using System.Threading.Tasks;4{5    {6        static void Main(string[] args)7        {8            MainAsync(args).GetAwaiter().GetResult();9        }10        static async Task MainAsync(string[] args)11        {12            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);13            using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false }))14            using (var page = await browser.NewPageAsync())15            {16                Console.WriteLine("page title: " + page.Title);17                await page.WaitForSelectorAsync("input[name=q]");18                await page.TypeAsync("input[name=q]", "puppeteer");19                await page.ClickAsync("input[value=Google Search]");20                await page.WaitForNavigationAsync();21                Console.WriteLine("page title: " + page.Title);22                await page.ScreenshotAsync("google.png");23                Console.WriteLine("screenshot saved");24                await worker.EvaluateExpressionAsync("document.querySelector('input[name=q]')");25            }26        }27    }28}29using PuppeteerSharp;30using System;31using System.Threading.Tasks;32{33    {34        static void Main(string[] args)35        {36            MainAsync(args).GetAwaiter().GetResult();37        }38        static async Task MainAsync(string[] args)39        {40            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);41            using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false }))42            using (var page = await browser.NewPageAsync())43            {44                Console.WriteLine("page title: " + page.Title);45                await page.WaitForSelectorAsync("input[name=q]");46                await page.TypeAsync("input[name=q]", "puppeteer");47                await page.ClickAsync("input[value=Google Search]");48                await page.WaitForNavigationAsync();49                Console.WriteLine("page title: " + page.Title);50                await page.ScreenshotAsync("google.png");51                Console.WriteLine("screenshot saved

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