How to use InitializeAsync method of PuppeteerSharp.Page class

Best Puppeteer-sharp code snippet using PuppeteerSharp.Page.InitializeAsync

WebPageService.cs

Source:WebPageService.cs

...18    {19        private Page _page;20        public string PathToScreenshot { get; private set; }21        private WebPageService() { }22        private async Task<WebPageService> InitializeAsync(string webpageUrl)23        {24            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);25            var browser = await Puppeteer.LaunchAsync(new LaunchOptions26            {27                Headless = true28            });29            _page = await browser.NewPageAsync();30            await _page.SetViewportAsync(new ViewPortOptions31            {32                Width = 1280,33                Height = 72034            });35            await GoToPage(webpageUrl);36            return this;37        }38        public static Task<WebPageService> LoadPage(string webpageUrl)39        {40            if (string.IsNullOrWhiteSpace(webpageUrl))41            {42                throw new ArgumentNullException("webpageUrl", "Please specify a web page URL.");43            }44            var wp = new WebPageService();45            return wp.InitializeAsync(webpageUrl);46        }47        public async Task<WebPageService> GoToPage(string webPageUrl)48        {49            await _page.GoToAsync(webPageUrl);50            return this;51        }52        public async Task<string> GetMd5ValueOfElement(string pathOfElement)53        {54            ElementHandle selector;55            string val = null;56            switch (GetSelectorType(pathOfElement))57            {58                case SelectorType.Unspecified:59                case SelectorType.Css:...

Base.Test.cs

Source:Base.Test.cs

...23            _output = output;24            Browser = _fixture.Browser;25            TestServer = _fixture.TestServer;26            HttpClient = _fixture.HttpClient;            27            Task.Run(InitializeAsync).Wait();28        }29        public void Dispose()30        {31            Task.Run(DisposeAsync).Wait();32        }33        public async Task InitializeAsync()34        {35            Page = await Browser.NewPageAsync();36            await Page.GoToAsync(_fixture.Url);   37        }38        public async Task DisposeAsync()39        {40            await Browser.CloseAsync();41            await Page.CloseAsync();42        }43		#region protected help methods44        protected async Task ClickAndWaitForNavigation(string selector) 45        {46            await Task.WhenAll(47                Page.ClickAsync(selector),...

DefaultBrowserContextTests.cs

Source:DefaultBrowserContextTests.cs

...11    {12        public DefaultBrowserContextTests(ITestOutputHelper output) : base(output)13        {14        }15        public override async Task InitializeAsync()16        {17            await base.InitializeAsync();18            Context = Browser.DefaultContext;19            Page = await Context.NewPageAsync();20        }21        [PuppeteerTest("defaultbrowsercontext.spec.ts", "DefaultBrowserContext", "page.cookies() should work")]22        [PuppeteerFact]23        public async Task PageGetCookiesAsyncShouldWork()24        {25            await Page.GoToAsync(TestConstants.EmptyPage);26            await Page.EvaluateExpressionAsync("document.cookie = 'username=John Doe'");27            var cookie = (await Page.GetCookiesAsync()).First();28            Assert.Equal("username", cookie.Name);29            Assert.Equal("John Doe", cookie.Value);30            Assert.Equal("localhost", cookie.Domain);31            Assert.Equal("/", cookie.Path);...

PuppeteerSharpRepoTests.cs

Source:PuppeteerSharpRepoTests.cs

...7{8    public class PuppeteerSharpRepoTests : IAsyncLifetime9    {10        private Browser Browser { get; set; }11        public async Task InitializeAsync()12        {13            await new BrowserFetcher().DownloadAsync();14            Browser = await Puppeteer.LaunchAsync(new LaunchOptions15            {16                Headless = true17            });18        }19        public async Task DisposeAsync()20        {21            await Browser.CloseAsync();22        }23        [Fact]24        public async Task Should_be_first_search_result_on_GitHub()25        {...

MainWindow.xaml.cs

Source:MainWindow.xaml.cs

...17        private async void Button_Click(object sender, RoutedEventArgs e)18        {19            var url = Url.Text;20            var selector = Selector.Text;21            await InitializeAsync();22            var page = await GetPage(url);23            var element = await GetElement(page, selector);24            TextBox.Text = GetText();25            await DisposeAsync();26            string GetText()27            {28                var result = new StringBuilder();29                result.AppendLine("Url: " + url);30                result.AppendLine("Selector: " + selector);31                result.AppendLine();32                if (element == null) return result.ToString();33                result.AppendLine("Id: " + element.Id());34                result.AppendLine("ClassName: " + element.ClassName());35                result.AppendLine("InnerHtml: " + element.InnerHtml());36                result.AppendLine("OuterHtml: " + element.OuterHtml());37                result.AppendLine("InnerText: " + element.InnerText());38                result.AppendLine("TextContent: " + element.TextContent());39                return result.ToString();40            }41        }42        private async Task InitializeAsync()43        {44            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision).ConfigureAwait(false);45            Browser = await Puppeteer.LaunchAsync(new LaunchOptions46            {47                Headless = true48            }).ConfigureAwait(false);49        }50        private async Task DisposeAsync()51        {52            await Browser.CloseAsync().ConfigureAwait(false);53        }54        private async Task<Page> GetPage(string url)55        {56            var page = await Browser.NewPageAsync().ConfigureAwait(false);...

HeadlessChromeRequestProxySeverFactory.cs

Source:HeadlessChromeRequestProxySeverFactory.cs

...32            var address = await addressQuery.EvaluateFunctionAsync<string>("el => el.innerHTML");33            var portQuery = await row.QuerySelectorAsync("td:nth-child(2)");34            var port = await portQuery.EvaluateFunctionAsync<int>("el => el.innerHTML");35            var proxyServer = new ProxyServer(address, port);36            await proxyServer.InitializeAsync();37            if (proxyServer.CanConnect)38            {39                proxyServers.Enqueue(proxyServer);40            }41        }42        43        private async Task<Browser> GetBrowser()44        {45            var options = new LaunchOptions46            {47                Headless = false,48                Args = new[] { "--no-sandbox",49                    "--disable-infobars",50                    "--disable-setuid-sandbox",...

BrowserTests.cs

Source:BrowserTests.cs

...11    public class BrowserTests : IAsyncLifetime12    {13        private string BaseAddress;14        private Browser Browser { get; set; }15        public async Task InitializeAsync()16        {17            string filename = "BrowserTestsAddress.config";18            if (File.Exists(filename))19                BaseAddress = File.ReadAllText(filename);20            else21                throw new Exception($"Missing {filename}");22            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);23            Browser = await Puppeteer.LaunchAsync(new LaunchOptions24            {25                Headless = true26            });27        }28        public async Task DisposeAsync()29        {...

PuppeteerPageBaseTest.cs

Source:PuppeteerPageBaseTest.cs

...7        public PuppeteerPageBaseTest(ITestOutputHelper output) : base(output)8        {9        }10        protected Page Page { get; set; }11        public override async Task InitializeAsync()12        {13            await base.InitializeAsync();14            Page = await Context.NewPageAsync();15        }16        public override async Task DisposeAsync()17        {18            await Page.CloseAsync();19            await base.DisposeAsync();20        }21        protected Task WaitForError()22        {23            var wrapper = new TaskCompletionSource<bool>();24            void errorEvent(object sender, ErrorEventArgs e)25            {26                wrapper.SetResult(true);27                Page.Error -= errorEvent;...

InitializeAsync

Using AI Code Generation

1var browser = await Puppeteer.LaunchAsync(new LaunchOptions2{3    Args = new[] { "--no-sandbox" }4});5var page = await browser.NewPageAsync();6await page.ScreenshotAsync("google.png");7await browser.CloseAsync();8var browser = await Puppeteer.LaunchAsync(new LaunchOptions9{10    Args = new[] { "--no-sandbox" }11});12var page = await browser.NewPageAsync();13await page.ScreenshotAsync("google.png");14await browser.CloseAsync();15var browser = await Puppeteer.LaunchAsync(new LaunchOptions16{17    Args = new[] { "--no-sandbox" }18});19var page = await browser.NewPageAsync();20await page.ScreenshotAsync("google.png");21await browser.CloseAsync();22var browser = await Puppeteer.LaunchAsync(new LaunchOptions23{24    Args = new[] { "--no-sandbox" }25});26var page = await browser.NewPageAsync();27await page.ScreenshotAsync("google.png");28await browser.CloseAsync();29var browser = await Puppeteer.LaunchAsync(new LaunchOptions30{31    Args = new[] { "--no-sandbox" }32});33var page = await browser.NewPageAsync();34await page.ScreenshotAsync("google.png");35await browser.CloseAsync();36var browser = await Puppeteer.LaunchAsync(new LaunchOptions37{

InitializeAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static void Main(string[] args)7        {8            MainAsync().GetAwaiter().GetResult();9        }10        static async Task MainAsync()11        {12            var options = new LaunchOptions { Headless = false };13            using (var browser = await Puppeteer.LaunchAsync(options))14            using (var page = await browser.NewPageAsync())15            {16                await page.WaitForSelectorAsync("input");17                await page.TypeAsync("input", "Puppeteer");18                await page.ClickAsync("input[type=submit]");19                await page.WaitForNavigationAsync();20                await page.ScreenshotAsync("googl

InitializeAsync

Using AI Code Generation

1var browser = await Puppeteer.LaunchAsync(new LaunchOptions2{3});4var page = await browser.NewPageAsync();5await page.PdfAsync("example.pdf");6await browser.CloseAsync();7var browserFetcher = new BrowserFetcher();8await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision);9var browser = await Puppeteer.LaunchAsync(new LaunchOptions10{11    ExecutablePath = browserFetcher.GetExecutablePath(BrowserFetcher.DefaultRevision)12});13var page = await browser.NewPageAsync();14await page.PdfAsync("example.pdf");15await browser.CloseAsync();16var browserFetcher = new BrowserFetcher();17await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision);18var browser = await Puppeteer.LaunchAsync(new LaunchOptions19{20    ExecutablePath = browserFetcher.GetExecutablePath(BrowserFetcher.DefaultRevision)21});22var page = await browser.NewPageAsync();23await page.PdfAsync("example.pdf");24await browser.CloseAsync();25var browserFetcher = new BrowserFetcher();26await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision);27var browser = await Puppeteer.LaunchAsync(new LaunchOptions28{29    ExecutablePath = browserFetcher.GetExecutablePath(BrowserFetcher.DefaultRevision)30});31var page = await browser.NewPageAsync();32await page.PdfAsync("example.pdf");33await browser.CloseAsync();34var browserFetcher = new BrowserFetcher();35await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision);36var browser = await Puppeteer.LaunchAsync(new LaunchOptions37{38    ExecutablePath = browserFetcher.GetExecutablePath(BrowserFetcher.DefaultRevision)39});40var page = await browser.NewPageAsync();

InitializeAsync

Using AI Code Generation

1var page = await browser.NewPageAsync();2await page.SetRequestInterceptionAsync(true);3page.Request += async (sender, e) =>4{5    await e.Request.ContinueAsync();6};7var html = await page.GetContentAsync();8Console.WriteLine(html);9var page = await browser.NewPageAsync();10await page.SetRequestInterceptionAsync(true);11page.Request += async (sender, e) =>12{13    await e.Request.ContinueAsync();14};15await page.WaitForNavigationAsync();16var html = await page.GetContentAsync();17Console.WriteLine(html);18var page = await browser.NewPageAsync();19await page.SetRequestInterceptionAsync(true);20page.Request += async (sender, e) =>21{22    await e.Request.ContinueAsync();23};24await page.WaitForSelectorAsync("div#hplogo");25var html = await page.GetContentAsync();26Console.WriteLine(html);27var page = await browser.NewPageAsync();28await page.SetRequestInterceptionAsync(true);29page.Request += async (sender, e) =>30{31    await e.Request.ContinueAsync();32};33await page.WaitForSelectorAsync("div#hplogo");34await page.WaitForSelectorAsync("input[name=q]");35var html = await page.GetContentAsync();36Console.WriteLine(html);37var page = await browser.NewPageAsync();38await page.SetRequestInterceptionAsync(true);39page.Request += async (sender, e) =>40{41    await e.Request.ContinueAsync();42};43await page.WaitForSelectorAsync("div#hplogo");44await page.WaitForSelectorAsync("input[name=q]");

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