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How to use Browser class of PuppeteerSharp package

Best Puppeteer-sharp code snippet using PuppeteerSharp.Browser

Methods.cs

Source:Methods.cs

...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);...

SaveWebPage.xaml.cs

Source:SaveWebPage.xaml.cs

...33        {34            //å¦æè¿ä¸æ¥åçå¼å¸¸äºï¼å¯ä»¥åè 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();  //æå¼ä¸ä¸ªæ°æ ç¾45                await page.GoToAsync(this.tbox_Url.Text); //è®¿é®é¡µé¢4647                //è®¾ç½®æªå¾éé¡¹48                PuppeteerSharp.ScreenshotOptions screenshotOptions = new PuppeteerSharp.ScreenshotOptions();49                //screenshotOptions.Clip = new PuppeteerSharp.Media.Clip() { Height = 0, Width = 0, X = 0, Y = 0 };//è®¾ç½®æªåªåºå50                screenshotOptions.FullPage = true; //æ¯å¦æªåæ´ä¸ªé¡µé¢51                screenshotOptions.OmitBackground = false;//æ¯å¦ä½¿ç¨éæèæ¯ï¼èä¸æ¯é»è®¤ç½è²èæ¯52                screenshotOptions.Quality = 100; //æªå¾è´¨é 0-100ï¼pngä¸å¯ç¨ï¼53                screenshotOptions.Type = PuppeteerSharp.ScreenshotType.Jpeg; //æªå¾æ ¼å¼5455                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("ä¿åç½é¡µæªå¾å¤±è´¥");75                }7677                //å¨æåè®°å¾å³éæµè§å¨åéæ¾èµæº78                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            //æå¼ç½é¡µçæä½è·ä¸é¢æ¯ä¸æ ·ç90            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();  //æå¼ä¸ä¸ªæ°æ ç¾98                await page.GoToAsync(this.tbox_Url.Text); //è®¿é®é¡µé¢99100                //è®¾ç½®PDFéé¡¹101                PuppeteerSharp.PdfOptions pdfOptions = new PuppeteerSharp.PdfOptions();102                pdfOptions.DisplayHeaderFooter = false; //æ¯å¦æ¾ç¤ºé¡µçé¡µè103                pdfOptions.FooterTemplate = "";   //é¡µèææ¬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}");
...

ApiFactory.cs

Source:ApiFactory.cs

...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}...

GistGithubService.cs

Source:GistGithubService.cs

...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}...

Program.cs

Source:Program.cs

...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}...

Crawler.cs

Source:Crawler.cs

...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;...

DocumentsV2Controller.cs

Source:DocumentsV2Controller.cs

...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();...

PuppeteerUtility.csx

Source:PuppeteerUtility.csx

...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}...

Browser

Using AI Code Generation

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}

Browser

Using AI Code Generation

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

Browser

Using AI Code Generation

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}

Browser

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            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}

Browser

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 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        {

Browser

Using AI Code Generation

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        {

Browser

Using AI Code Generation

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);

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.