How to use Browser class of PuppeteerSharp package

...9using System.Collections.Generic;10using System.Linq;11using System.Threading.Tasks;12using ProxyType = RuriLib.Models.Proxies.ProxyType;13namespace RuriLib.Blocks.Puppeteer.Browser14{15    [BlockCategory("Browser", "Blocks for interacting with a puppeteer browser", "#e9967a")]16    public static class Methods17    {18        [Block("Opens a new puppeteer browser", name = "Open Browser")]19        public static async Task PuppeteerOpenBrowser(BotData data)20        {21            data.Logger.LogHeader();22            // Check if there is already an open browser23            var oldBrowser = data.TryGetObject<PuppeteerSharp.Browser>("puppeteer");24            if (oldBrowser is not null && !oldBrowser.IsClosed)25            {26                data.Logger.Log("The browser is already open, close it if you want to open a new browser", LogColors.DarkSalmon);27                return;28            }29            var args = data.ConfigSettings.PuppeteerSettings.CommandLineArgs;30            if (data.Proxy != null && data.UseProxy)31            {32                if (data.Proxy.Type == ProxyType.Http || !data.Proxy.NeedsAuthentication)33                {34                    args += $" --proxy-server={data.Proxy.Type.ToString().ToLower()}://{data.Proxy.Host}:{data.Proxy.Port}";35                }36                else37                {38                    var proxyType = data.Proxy.Type == ProxyType.Socks5 ? Yove.Proxy.ProxyType.Socks5 : Yove.Proxy.ProxyType.Socks4;39                    var proxyClient = new ProxyClient(40                        data.Proxy.Host, data.Proxy.Port,41                        data.Proxy.Username, data.Proxy.Password, 42                        proxyType);43                    data.SetObject("puppeteer.yoveproxy", proxyClient);44                    args += $" --proxy-server={proxyClient.GetProxy(null).Authority}";45                }46            }47            // Configure the options48            var launchOptions = new LaunchOptions49            {50                Args = new string[] { args },51                ExecutablePath = data.Providers.PuppeteerBrowser.ChromeBinaryLocation,52                Headless = data.ConfigSettings.PuppeteerSettings.Headless,53                DefaultViewport = null // This is important54            };55            // Add the plugins56            var extra = new PuppeteerExtra();57            extra.Use(new StealthPlugin());58            // Launch the browser59            var browser = await extra.LaunchAsync(launchOptions);60            browser.IgnoreHTTPSErrors = data.ConfigSettings.PuppeteerSettings.IgnoreHttpsErrors;61            // Save the browser for further use62            data.SetObject("puppeteer", browser);63            var page = (await browser.PagesAsync()).First();64            SetPageAndFrame(data, page);65            await SetPageLoadingOptions(data, page);66            // Authenticate if the proxy requires auth67            if (data.UseProxy && data.Proxy is { NeedsAuthentication: true, Type: ProxyType.Http } proxy)68                await page.AuthenticateAsync(new Credentials { Username = proxy.Username, Password = proxy.Password });69            data.Logger.Log($"{(launchOptions.Headless ? "Headless " : "")}Browser opened successfully!", LogColors.DarkSalmon);70        }71        [Block("Closes an open puppeteer browser", name = "Close Browser")]72        public static async Task PuppeteerCloseBrowser(BotData data)73        {74            data.Logger.LogHeader();75            var browser = GetBrowser(data);76            await browser.CloseAsync();77            StopYoveProxyInternalServer(data);78            data.Logger.Log("Browser closed successfully!", LogColors.DarkSalmon);79        }80        [Block("Opens a new page in a new browser tab", name = "New Tab")]81        public static async Task PuppeteerNewTab(BotData data)82        {83            data.Logger.LogHeader();84            var browser = GetBrowser(data);85            var page = await browser.NewPageAsync();86            await SetPageLoadingOptions(data, page);87            SetPageAndFrame(data, page); // Set the new page as active88            data.Logger.Log($"Opened a new page", LogColors.DarkSalmon);89        }90        [Block("Closes the currently active browser tab", name = "Close Tab")]91        public static async Task PuppeteerCloseTab(BotData data)92        {93            data.Logger.LogHeader();94            var browser = GetBrowser(data);95            var page = GetPage(data);96            97            // Close the page98            await page.CloseAsync();99            100            // Set the first page as active101            page = (await browser.PagesAsync()).FirstOrDefault();102            SetPageAndFrame(data, page);103            if (page != null)104                await page.BringToFrontAsync();105            data.Logger.Log($"Closed the active page", LogColors.DarkSalmon);106        }107        [Block("Switches to the browser tab with a specified index", name = "Switch to Tab")]108        public static async Task PuppeteerSwitchToTab(BotData data, int index)109        {110            data.Logger.LogHeader();111            var browser = GetBrowser(data);112            var page = (await browser.PagesAsync())[index];113            await page.BringToFrontAsync();114            SetPageAndFrame(data, page);115            data.Logger.Log($"Switched to tab with index {index}", LogColors.DarkSalmon);116        }117        [Block("Reloads the current page", name = "Reload")]118        public static async Task PuppeteerReload(BotData data)119        {120            data.Logger.LogHeader();121            var page = GetPage(data);122            await page.ReloadAsync();123            SwitchToMainFramePrivate(data);124            data.Logger.Log($"Reloaded the page", LogColors.DarkSalmon);125        }126        [Block("Goes back to the previously visited page", name = "Go Back")]127        public static async Task PuppeteerGoBack(BotData data)128        {129            data.Logger.LogHeader();130            var page = GetPage(data);131            await page.GoBackAsync();132            SwitchToMainFramePrivate(data);133            data.Logger.Log($"Went back to the previously visited page", LogColors.DarkSalmon);134        }135        [Block("Goes forward to the next visited page", name = "Go Forward")]136        public static async Task PuppeteerGoForward(BotData data)137        {138            data.Logger.LogHeader();139            var page = GetPage(data);140            await page.GoForwardAsync();141            SwitchToMainFramePrivate(data);142            data.Logger.Log($"Went forward to the next visited page", LogColors.DarkSalmon);143        }144        private static PuppeteerSharp.Browser GetBrowser(BotData data)145            => data.TryGetObject<PuppeteerSharp.Browser>("puppeteer") ?? throw new Exception("The browser is not open!");146        private static PuppeteerSharp.Page GetPage(BotData data)147            => data.TryGetObject<PuppeteerSharp.Page>("puppeteerPage") ?? throw new Exception("No pages open!");148        private static void SwitchToMainFramePrivate(BotData data)149            => data.SetObject("puppeteerFrame", GetPage(data).MainFrame);150        private static void SetPageAndFrame(BotData data, PuppeteerSharp.Page page)151        {152            data.SetObject("puppeteerPage", page);153            SwitchToMainFramePrivate(data);154        }155        private static void StopYoveProxyInternalServer(BotData data)156            => data.TryGetObject<ProxyClient>("puppeteer.yoveproxy")?.Dispose();157        private static async Task SetPageLoadingOptions(BotData data, PuppeteerSharp.Page page)158        {159            await page.SetRequestInterceptionAsync(true);...

...33        {34            //如果这一步发生异常了，可以参考 https://www.cnblogs.com/zhaotianff/p/13528507.html35            try36            {37                await new PuppeteerSharp.BrowserFetcher().DownloadAsync(PuppeteerSharp.BrowserFetcher.DefaultRevision);3839                var browser = await PuppeteerSharp.Puppeteer.LaunchAsync(new PuppeteerSharp.LaunchOptions40                {41                    Headless = true42                });4344                var page = await browser.NewPageAsync();  //打开一个新标签45                await page.GoToAsync(this.tbox_Url.Text); //访问页面4647                //设置截图选项48                PuppeteerSharp.ScreenshotOptions screenshotOptions = new PuppeteerSharp.ScreenshotOptions();49                //screenshotOptions.Clip = new PuppeteerSharp.Media.Clip() { Height = 0, Width = 0, X = 0, Y = 0 };//设置截剪区域50                screenshotOptions.FullPage = true; //是否截取整个页面51                screenshotOptions.OmitBackground = false;//是否使用透明背景，而不是默认白色背景52                screenshotOptions.Quality = 100; //截图质量 0-100（png不可用）53                screenshotOptions.Type = PuppeteerSharp.ScreenshotType.Jpeg; //截图格式5455                var fileName = Environment.CurrentDirectory + $"\\download\\{await page.GetTitleAsync()}.jpg";5657                if (System.IO.File.Exists(fileName))58                {59                    fileName = fileName.Replace(".jpg", $"{DateTime.Now.ToString("ffff")}.jpg");60                }6162                await page.ScreenshotAsync(fileName, screenshotOptions);6364                if (System.IO.File.Exists(fileName))65                {66                    BitmapImage bi = new BitmapImage();67                    bi.BeginInit();68                    bi.UriSource = new Uri(fileName, UriKind.Absolute);69                    bi.EndInit();70                    this.image.Source = bi;71                }72                else73                {74                    EMessageBox.Show("保存网页截图失败");75                }7677                //在最后记得关闭浏览器及释放资源78                browser.Disconnect();79                browser.Dispose();80            }81            catch(Exception ex)82            {83                EMessageBox.Show(ex.Message);84            }85        }8687        private async void btn_SaveAsPDF_Click(object sender, RoutedEventArgs e)88        {89            //打开网页的操作跟上面是一样的90            try91            {92                await new PuppeteerSharp.BrowserFetcher().DownloadAsync(PuppeteerSharp.BrowserFetcher.DefaultRevision);93                var browser = await PuppeteerSharp.Puppeteer.LaunchAsync(new PuppeteerSharp.LaunchOptions94                {95                    Headless = true96                });97                var page = await browser.NewPageAsync();  //打开一个新标签98                await page.GoToAsync(this.tbox_Url.Text); //访问页面99100                //设置PDF选项101                PuppeteerSharp.PdfOptions pdfOptions = new PuppeteerSharp.PdfOptions();102                pdfOptions.DisplayHeaderFooter = false; //是否显示页眉页脚103                pdfOptions.FooterTemplate = "";   //页脚文本104105                var width = await page.EvaluateFunctionAsync<int>("function getWidth(){return document.body.scrollWidth}");106                var height = await page.EvaluateFunctionAsync<int>("function getHeight(){return document.body.scrollHeight}");
...

...6using System.Threading.Tasks;7using Microsoft.Extensions.Logging;8using PuppeteerSharp;9using Weikio.TypeGenerator;10namespace Weikio.ApiFramework.Plugins.Browser11{12    public class ApiFactory13    {14        private readonly ILogger<ApiFactory> _logger;15        public ApiFactory(ILogger<ApiFactory> logger)16        {17            _logger = logger;18        }19        public async Task<List<Type>> Create(BrowserOptions configuration)20        {21            var executablePath = configuration?.ExecutablePath;22            var downloadBrowser = string.IsNullOrWhiteSpace(executablePath) && string.IsNullOrWhiteSpace(configuration?.BrowserWSEndpoint);23            if (downloadBrowser)24            {25                var path = GetBrowserPath();26                _logger.LogDebug("Downloading browser to path {Path}", path);27                28                var browserConfigurationFile = Path.Combine(path, ".browser.config");29                if (File.Exists(browserConfigurationFile))30                {31                    executablePath = await File.ReadAllTextAsync(browserConfigurationFile, Encoding.UTF8);32                    if (!File.Exists(executablePath))33                    {34                        File.Delete(browserConfigurationFile);35                        Directory.Delete(path, true);36                        executablePath = string.Empty;37                        await Task.Delay(TimeSpan.FromMilliseconds(300));38                    }39                }40                if (!File.Exists(browserConfigurationFile))41                {42                    if (!Directory.Exists(path))43                    {44                        Directory.CreateDirectory(path);45                    }46                    var browserFetcherOptions = new BrowserFetcherOptions { Path = path };47                    var browserFetcher = new BrowserFetcher(browserFetcherOptions);48                    await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision).ConfigureAwait(false);49                    executablePath = browserFetcher.GetExecutablePath(BrowserFetcher.DefaultRevision);50                    await File.WriteAllTextAsync(browserConfigurationFile, executablePath, Encoding.UTF8);51                    await Task.Delay(TimeSpan.FromMilliseconds(300));52                }53                executablePath = await File.ReadAllTextAsync(browserConfigurationFile, Encoding.UTF8);54            }55            var code = string.Empty;56            if (!string.IsNullOrWhiteSpace(executablePath))57            {58                if (!File.Exists(executablePath))59                {60                    throw new ArgumentException($"Can not use executable as the browser. File {executablePath} not found.");61                }62                _logger.LogDebug("Using locally installed Chromium based browser");63                var sourceWriter = new StringBuilder();64                sourceWriter.UsingNamespace("System.Threading.Tasks");65                sourceWriter.UsingNamespace("PuppeteerSharp");66                sourceWriter.Namespace("Weikio.ApiFramework.Plugins.Browser");67                sourceWriter.StartClass($"ExecutableBrowser : WebBrowser");68                sourceWriter.WriteLine($"private readonly string _executablePath = @\"{executablePath}\";");69                sourceWriter.Write(70                    "protected override async Task<PuppeteerSharp.Browser> GetBrowser() { var launchOptions = new LaunchOptions() { Headless = true, ExecutablePath = _executablePath };var result = await Puppeteer.LaunchAsync(launchOptions); return result; }");71                sourceWriter.FinishBlock(); // Finish the class72                sourceWriter.FinishBlock(); // Finish the namespace73                code = sourceWriter.ToString();74            }75            else76            {77                _logger.LogDebug("Using remote browser");78                var sourceWriter = new StringBuilder();79                sourceWriter.UsingNamespace("System.Threading.Tasks");80                sourceWriter.UsingNamespace("PuppeteerSharp");81                sourceWriter.Namespace("Weikio.ApiFramework.Plugins.Browser");82                sourceWriter.StartClass($"RemoteBrowser : WebBrowser");83                sourceWriter.WriteLine($"private readonly string _browserWSEndpoint = \"{configuration?.BrowserWSEndpoint}\";");84                sourceWriter.Write(85                    "protected override async Task<PuppeteerSharp.Browser> GetBrowser() { var connectOptions = new ConnectOptions() { BrowserWSEndpoint = _browserWSEndpoint };var result = await Puppeteer.ConnectAsync(connectOptions); return result; }");86                sourceWriter.FinishBlock(); // Finish the class87                sourceWriter.FinishBlock(); // Finish the namespace88                code = sourceWriter.ToString();89            }90            var generator = new CodeToAssemblyGenerator();91            generator.ReferenceAssemblyContainingType<WebBrowser>();92            generator.ReferenceAssemblyContainingType<PuppeteerSharp.Browser>();93            var assembly = generator.GenerateAssembly(code);94            var result = assembly.GetExportedTypes()95                .ToList();96            return result;97        }98        public static string GetBrowserPath()99        {100            return Path.Combine(Path.GetTempPath(), "ApiFramework_Browser");101        }102    }103}...

...9    class GistGithubService : IGistGithubService10    {11        private readonly GitHubClient client =12            new GitHubClient(new ProductHeaderValue("Patrick-Star-Helper"));13        private readonly PuppeteerSharp.BrowserFetcher browserFetcher =14            new PuppeteerSharp.BrowserFetcher();15        private readonly GitHubModel gitHubModel;16        public bool IsAuthenticated { get; private set; }17        private readonly ICredentialStore credentialStore;18        public GistGithubService(19            IAppConfigProvider configProvider,20            ICredentialStore credentialStore)21        {22            this.credentialStore = credentialStore;23            gitHubModel = configProvider.Configuration.GitHub!;24            browserFetcher.DownloadProgressChanged += Fetcher_DownloadProgressChanged;25        }26        private void Fetcher_DownloadProgressChanged(object sender, System.Net.DownloadProgressChangedEventArgs e)27        {28            Console.WriteLine("Downloading Chromium: {0}%", e.ProgressPercentage);29        }30        public async Task<bool> Authenticate()31        {32            var accessToken = await credentialStore.LoadAccessToken();33            //if (!string.IsNullOrEmpty(accessToken))34            //{35            //    IsAuthenticated = true;36            //    client.Credentials = new Credentials(accessToken);37            //    return true;38            //}39            var loginRequest = new OauthLoginRequest(gitHubModel.ClientId);40            foreach (var scope in gitHubModel.Scopes!)41                loginRequest.Scopes.Add(scope);42            var redirectPage = client.Oauth.GetGitHubLoginUrl(loginRequest);43            client.Credentials = await FetchGitCredential(redirectPage);44            await credentialStore.StoreAccessToken(client.Credentials.GetToken());45            IsAuthenticated = true;46            return true;47        }48        public async Task<string?> Create(GistModel gist)49        {50            try51            {52                var result = await client.Gist.Create(new NewGist53                {54                    Files =55                    {56                        [gist.Name] = gist.Content57                    },58                    Description = gist.Description59                });60                return result?.Id;61            }62            catch (Exception ex)63            {64                var msg = ex.Message;65                throw;66            }67        }68        public async Task<string?> Update(string id, GistModel gist)69        {70            var result = await client.Gist.Edit(id, new GistUpdate71            {72                Files =73                {74                    [gist.Name] = new GistFileUpdate75                    {76                        Content = gist.Content77                    }78                },79                Description = gist.Description80            });81            return result?.Id;82        }83        public async Task<GistModel?> Find(string id)84        {85            var result = await client.Gist.Get(id);86            if (result != null)87            {88                var firstEntry = result.Files.FirstOrDefault();89                return new GistModel(firstEntry.Value.Filename, firstEntry.Value.Content)90                {91                };92            }93            return null;94        }95        private async Task<Credentials> FetchGitCredential(Uri redirectPage)96        {97            var targetUrl = await GetRedirectCallbackResult(redirectPage);98            var queryString = QueryStringHelper.ToDictionary(targetUrl);99            var code = queryString[gitHubModel.TargetRedirectKey!];100            var result = await client.Oauth.CreateAccessToken(101                new OauthTokenRequest(gitHubModel.ClientId, gitHubModel.ClientSecret, code));102            return new Credentials(result.AccessToken);103        }104        private async Task<Uri> GetRedirectCallbackResult(Uri redirectPage)105        {106            var revisionInfo = await browserFetcher107                .DownloadAsync(PuppeteerSharp.BrowserFetcher.DefaultRevision);108            using var browser = await PuppeteerSharp.Puppeteer.LaunchAsync(new PuppeteerSharp.LaunchOptions109            {110                Headless = false,111                LogProcess = true,112                DumpIO = true113            });114            var page = await browser.NewPageAsync();115            var redirectResult = await page.GoToAsync(redirectPage.AbsoluteUri);116            var target = await browser.WaitForTargetAsync(e => e.Url.Contains(gitHubModel.RedirectUrl!));117            return new Uri(target.Url);118        }119    }120}...

...3namespace web_browser_csharp4{5    class Program6    {7        static PuppeteerSharp.Browser browser;8        static PuppeteerSharp.Page browserPage;9        static Action<string> callbackFromBrowserDelegate;10        static string UserDataDirPath() =>11            System.IO.Path.Combine(Environment.GetEnvironmentVariable("LOCALAPPDATA"), "bot", "web-browser", "user-data");12        static void Main(string[] args)13        {14            /*15            2020-02-17 Observation before introducing the killing of previous web browser processes:16            LaunchAsync failed if a process from the last run was still present.17            (See report of this issue at https://forum.botengine.org/t/farm-manager-tribal-wars-2-farmbot/3038/32?u=viir)18            Unhandled exception. System.AggregateException: One or more errors occurred. (Failed to launch Chromium! [28592:33396:0217/074915.470:ERROR:cache_util_win.cc(21)] Unable to move the cache: Access is denied. (0x5)19            [28592:33396:0217/074915.471:ERROR:cache_util.cc(141)] Unable to move cache folder C:\Users\John\AppData\Local\bot\web-browser\user-data\ShaderCache\GPUCache to C:\Users\John\AppData\Local\bot\web-browser\user-data\ShaderCache\old_GPUCache_00020            [28592:33396:0217/074915.471:ERROR:disk_cache.cc(178)] Unable to create cache21            [28592:33396:0217/074915.471:ERROR:shader_disk_cache.cc(601)] Shader Cache Creation failed: -222            [28592:33396:0217/074915.473:ERROR:browser_gpu_channel_host_factory.cc(138)] Failed to launch GPU process.23            )24            ---> PuppeteerSharp.ChromiumProcessException: Failed to launch Chromium! [28592:33396:0217/074915.470:ERROR:cache_util_win.cc(21)] Unable to move the cache: Access is denied. (0x5)25            [28592:33396:0217/074915.471:ERROR:cache_util.cc(141)] Unable to move cache folder C:\Users\John\AppData\Local\bot\web-browser\user-data\ShaderCache\GPUCache to C:\Users\John\AppData\Local\bot\web-browser\user-data\ShaderCache\old_GPUCache_00026            [28592:33396:0217/074915.471:ERROR:disk_cache.cc(178)] Unable to create cache27            [28592:33396:0217/074915.471:ERROR:shader_disk_cache.cc(601)] Shader Cache Creation failed: -228            [28592:33396:0217/074915.473:ERROR:browser_gpu_channel_host_factory.cc(138)] Failed to launch GPU process.29            at PuppeteerSharp.ChromiumProcess.State.StartingState.StartCoreAsync(ChromiumProcess p)30            at PuppeteerSharp.ChromiumProcess.State.StartingState.StartCoreAsync(ChromiumProcess p)31            at PuppeteerSharp.Launcher.LaunchAsync(LaunchOptions options)32            at PuppeteerSharp.Launcher.LaunchAsync(LaunchOptions options)33            */34            KillPreviousWebBrowserProcesses();35            StartWebBrowser().Wait();36        }37        static void KillPreviousWebBrowserProcesses()38        {39            var matchingProcesses =40                System.Diagnostics.Process.GetProcesses()41                /*42                2020-02-1743                .Where(process => process.StartInfo.Arguments.Contains(UserDataDirPath(), StringComparison.InvariantCultureIgnoreCase))44                */45                .Where(ProcessIsWebBrowser)46                .ToList();47            foreach (var process in matchingProcesses)48            {49                if (process.HasExited)50                    continue;51                process.Kill();52            }53        }54        static bool ProcessIsWebBrowser(System.Diagnostics.Process process)55        {56            try57            {58                return process.MainModule.FileName.Contains(".local-chromium");59            }60            catch61            {62                return false;63            }64        }65        static async System.Threading.Tasks.Task StartWebBrowser()66        {67            await new PuppeteerSharp.BrowserFetcher().DownloadAsync(PuppeteerSharp.BrowserFetcher.DefaultRevision);68            browser = await PuppeteerSharp.Puppeteer.LaunchAsync(new PuppeteerSharp.LaunchOptions69            {70                Headless = false,71                UserDataDir = UserDataDirPath(),72                DefaultViewport = null,73            });74            browserPage = (await browser.PagesAsync()).FirstOrDefault() ?? await browser.NewPageAsync();75            await browserPage.ExposeFunctionAsync("____callback____", (string returnValue) =>76            {77                callbackFromBrowserDelegate?.Invoke(returnValue);78                return 0;79            });80        }81    }82}...

...18    private string url;19    private double searchRadius;20    private string browserPath;21    private Dictionary<string, string> browserArgs = new Dictionary<string, string>();22    private PuppeteerSharp.Browser browser;23    private PuppeteerSharp.Page page;24    private bool isFirstPage = true;25    public Crawler SetPhrase(string phrase)26    {27        this.phrase = phrase.Replace(" ", "+");28        this.url = $"{_GoogleMapUrl}/{this.phrase}";29        return this;30    }31    public double SearchRadius { set => this.searchRadius = value; get => searchRadius; }32    public string BrowserPath { set => this.browserPath = value; get => browserPath; }33    private double sourceLat;34    private double sourceLon;35    private HtmlDocument doc = new HtmlDocument();36    public Crawler SetProxy(string host, int port)37    {38        if (browserArgs.ContainsKey("proxy"))39        {40            browserArgs["proxy"] = string.Concat("--proxy-server=", host, ":", port);41        }42        else43        {44            browserArgs.Add("proxy", string.Concat("--proxy-server=", host, ":", port));45        }46        return this;...

...13	[Route("[controller]")]14	public class DocumentsV2Controller: ControllerBase {15		//private readonly LaunchOptions _browserOptions = new LaunchOptions { Headless = true, ExecutablePath = @"C:\Users\Zeroget\Downloads\chrome-win\chrome-win\chrome.exe", Args = new string[] { "--no-sandbox" } };16		private readonly LaunchOptions _browserOptions = new LaunchOptions { Headless = true, ExecutablePath = @"/usr/bin/chromium-browser", Args = new string[] { "--no-sandbox" } };17		private static Browser s_browser = null;18		private readonly ILogger<DocumentsV2Controller> _logger;19		public DocumentsV2Controller(ILogger<DocumentsV2Controller> logger) {20			_logger = logger;21		}22		[HttpPost("byUrl")]23		public async Task<IActionResult> Get(List<string> url, bool landscape) {24			Stopwatch stopwatch = Stopwatch.StartNew();25			stopwatch.Start();26			var files = await GeneratePdfAsync(url, landscape);27			return Ok(new { Paths = files.Select(x => "/pdf/" + x), Elapsed = stopwatch.ElapsedMilliseconds });28		}29		[HttpPost("byFile")]30		public async Task<IActionResult> Post(IFormFileCollection fileStream, bool landscape) {31			Stopwatch stopwatch = Stopwatch.StartNew();...

...17        });18        var page = (await browser.PagesAsync())[0];19        //await page.WaitForNavigationAsync();20        return new PageResult{21            Browser = browser, // they may need the browser to close it after they are done22            Page = page23        };24    }25    26}27public class PageResult {28    public PuppeteerSharp.Browser Browser {get; set; }29    public PuppeteerSharp.Page Page {get; set; }30    /*31    For deconstruct in dotnet see this: https://docs.microsoft.com/en-us/dotnet/csharp/deconstruct32    */33    public void Deconstruct(out PuppeteerSharp.Page page,34                            out PuppeteerSharp.Browser browser){35        page = this.Page;36        browser = this.Browser;37    }38}...

1using PuppeteerSharp;2using System;3using System.Threading.Tasks;4{5    static async Task Main(string[] args)6    {7        var browser = await Puppeteer.LaunchAsync(new LaunchOptions8        {9            ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe"10        });11        var page = await browser.NewPageAsync();12        await page.ScreenshotAsync("google.png");13        await browser.CloseAsync();14    }15}

1using PuppeteerSharp;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            var browserFetcher = new BrowserFetcher();9            await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision);10            var browser = await Puppeteer.LaunchAsync(new LaunchOptions11            {12                Args = new[] { "--no-sandbox" }13            });14            var page = await browser.NewPageAsync();15            await page.ScreenshotAsync("google.png");16            await browser.CloseAsync();17        }18    }19}20using PuppeteerSharp;21using System;22using System.Threading.Tasks;23{24    {25        static async Task Main(string[] args)26        {27            var browserFetcher = new BrowserFetcher();28            await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision);29            var browser = await Puppeteer.LaunchAsync(new LaunchOptions30            {31                Args = new[] { "--no-sandbox" }32            });33            var page = await browser.NewPageAsync();34            await page.ScreenshotAsync("google.png");35            await browser.CloseAsync();36        }37    }38}39using PuppeteerSharp;40using System;41using System.Threading.Tasks;42{43    {44        static async Task Main(string[] args)45        {46            var browserFetcher = new BrowserFetcher();47            await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision);48            var browser = await Puppeteer.LaunchAsync(new LaunchOptions49            {50                Args = new[] { "--no-sandbox" }51            });52            var page = await browser.NewPageAsync();53            await page.ScreenshotAsync("google.png");54            await browser.CloseAsync();55        }56    }57}58using PuppeteerSharp;59using System;60using System.Threading.Tasks;61{62    {63        static async Task Main(string[] args

1using PuppeteerSharp;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions9            {10            }))11            using (var page = await browser.NewPageAsync())12            {13                await page.ScreenshotAsync("google.png");14            }15        }16    }17}

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            using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions13            {14            }))15            using (var page = await browser.NewPageAsync())16            {17                await page.ScreenshotAsync("google.png");18            }19        }20    }21}22using PuppeteerSharp;23using System;24using System.Threading.Tasks;25{26    {27        static void Main(string[] args)28        {29            MainAsync(args).GetAwaiter().GetResult();30        }31        static async Task MainAsync(string[] args)32        {33            using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions34            {35            }))36            using (var page = await browser.NewPageAsync())37            {38                await page.ScreenshotAsync("google.png");39            }40        }41    }42}

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 LaunchOptions { Headless = false });13            var page = await browser.NewPageAsync();14        }15    }16}17   at PuppeteerSharp.ChromiumProcess.GetExecutablePath()18   at PuppeteerSharp.ChromiumProcess..cctor()19   at PuppeteerSharp.ChromiumProcess..ctor()20   at PuppeteerSharp.Puppeteer.LaunchAsync(LaunchOptions options)21   at PuppeteerSharp.Program.MainAsync() in C:\Users\user\source\repos\puppeteer-sharp\puppeteer-sharp\Program.cs:line 2122   at PuppeteerSharp.Program.MainAsync() in C:\Users\user\source\repos\puppeteer-sharp\puppeteer-sharp\Program.cs:line 2223   at PuppeteerSharp.Program.Main(String[] args) in C:\Users\user\source\repos\puppeteer-sharp\puppeteer-sharp\Program.cs:line 924using PuppeteerSharp;25using System;26using System.Threading.Tasks;27{28    {29        static void Main(string[] args)30        {31            MainAsync().Wait();32        }33        static async Task MainAsync()34        {

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    static async Task Main(string[] args)6    {7        await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);8        using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))9        {10            using (var page = await browser.NewPageAsync())11            {12                await page.ScreenshotAsync("google.png");13            }14        }15    }16}17using System;18using System.Threading.Tasks;19using PuppeteerSharp;20{21    static async Task Main(string[] args)22    {23        await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);24        using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))25        {26            using (var page = await browser.NewPageAsync())27            {28                await page.ScreenshotAsync("google.png");29            }30        }31    }32}33using System;34using System.Threading.Tasks;35using PuppeteerSharp;36{37    static async Task Main(string[] args)38    {39        await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);40        using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))41        {42            using (var page = await browser.NewPageAsync())43            {44                await page.ScreenshotAsync("google.png");45            }46        }47    }48}49using System;50using System.Threading.Tasks;51using PuppeteerSharp;52{53    static async Task Main(string[] args)54    {55        await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);56        using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))57        {

1using PuppeteerSharp;2using System.Threading.Tasks;3{4    {5        static async Task Main(string[] args)6        {7            var browser = await Puppeteer.LaunchAsync(new LaunchOptions8            {9            });10            var page = await browser.NewPageAsync();11            var title = await page.EvaluateExpressionAsync<string>("document.title");12            System.Console.WriteLine(title);13        }14    }15}16using PuppeteerSharp;17using System.Threading.Tasks;18{19    {20        static async Task Main(string[] args)21        {22            var browser = await Puppeteer.LaunchAsync(new LaunchOptions23            {24                ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe"25            });26            var page = await browser.NewPageAsync();27            var title = await page.EvaluateExpressionAsync<string>("document.title");28            System.Console.WriteLine(title);29        }30    }31}32using PuppeteerSharp;33using System.Threading.Tasks;34{35    {36        static async Task Main(string[] args)37        {38            var browser = await Puppeteer.LaunchAsync(new LaunchOptions39            {40                ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe"41            });42            var page = await browser.NewPageAsync();43            var title = await page.EvaluateExpressionAsync<string>("document.title");44            System.Console.WriteLine(title);