How to use SetUserAgentAsync method of PuppeteerSharp.Page class
Best Puppeteer-sharp code snippet using PuppeteerSharp.Page.SetUserAgentAsync
WebScraper.cs
Source:WebScraper.cs 
...52 {53 Console.WriteLine("Error:" + e.ToString());54 };55 m_page.Console += (s, e) => { Console.WriteLine(e.Message.Text); };56 m_page.SetUserAgentAsync(agent).Wait();57 }58 /// <summary>59 /// Set username and password to authenticate against web pages with.60 /// </summary>61 /// <param name="username">Username to authenticate with</param>62 /// <param name="password">Password to autrhenticate with.</param>63 public void SetAuth(string username, string password)64 {65 SetAuthAsync(username, password).Wait();66 }67 private async Task SetAuthAsync(string username, string password)68 {69 await m_page.AuthenticateAsync(new Credentials {Username = username, Password = password});70 }...
BrowserUtils.cs
Source:BrowserUtils.cs
...80 Timeout = 0,81 WaitUntil = waitUntilNavigations82 };83 string originalUserAgent = await browser.GetUserAgentAsync();84 await page.SetUserAgentAsync($"{originalUserAgent} {USER_AGENT_SUFFIX}");85 if (cookies.Any()) {86 await page.SetCookieAsync(cookies.ToArray());87 }88 await page.GoToAsync(url, navigationOptions);89 await InjectCustomStylesAsync(page, ref options);90 91 bool hasPageNumbers = await page.EvaluateFunctionAsync<bool>("(window.UltimatePDF? window.UltimatePDF.hasPageNumbers : function() { return false; })");92 if (hasPageNumbers) {93 /*94 * When the layout has page numbers, we first retrieve a95 * first blank pdf to calculate the number of pages.96 * Then, knowing how many pages, we can layout the headers and footers,97 * and retrieve the final pdf.98 */99 byte[] blankContents = await page.PdfDataAsync(options);100 using (var blankPdf = new PDFUtils(blankContents)) {101 await page.EvaluateFunctionAsync("window.UltimatePDF.layoutPages", blankPdf.Pages);102 return await page.PdfDataAsync(options);103 }104 } else {105 return await page.PdfDataAsync(options);106 }107 } finally {108 await Cleanup(page);109 }110 } finally {111 Cleanup(browser);112 }113 }114 private Task InjectCustomStylesAsync(Page page, ref PdfOptions options) {115 /*116 * It seems that Puppeteer is not overriding the page styles from the print stylesheet.117 * As a workaround, we inject a <style> tag with the @page overrides at the end of <head>.118 * This issue might be eventually resolved in Puppeteer, and seems to be tracked by https://github.com/GoogleChrome/puppeteer/issues/393119 */120 string overrides = string.Empty;121 if (!options.PreferCSSPageSize && options.Width != null && options.Height != null) {122 overrides += $"size: {options.Width} {options.Height}; ";123 }124 if (options.MarginOptions.Top != null) {125 overrides += $"margin-top: {options.MarginOptions.Top}; ";126 }127 if (options.MarginOptions.Right != null) {128 overrides += $"margin-right: {options.MarginOptions.Right}; ";129 }130 if (options.MarginOptions.Bottom != null) {131 overrides += $"margin-bottom: {options.MarginOptions.Bottom}; ";132 }133 if (options.MarginOptions.Left != null) {134 overrides += $"margin-left: {options.MarginOptions.Left}; ";135 }136 if (!string.IsNullOrEmpty(overrides)) {137 /* Change the options so that Puppeteer respects our overrides */138 options.PreferCSSPageSize = true;139 options.Width = options.Height = null;140 options.MarginOptions = new MarginOptions();141 /* We must add the <style> tag at the end of <body> to make sure it is not overriden */142 string pageOverrides = "@page { " + overrides + "}";143 return page.EvaluateExpressionAsync($"const style = document.createElement('style'); style.innerHTML = '{pageOverrides}'; document.head.appendChild(style);");144 } else {145 return Task.CompletedTask;146 }147 }148 public async Task<byte[]> ScreenshotPNG(string url, IEnumerable<CookieParam> cookies, ViewPortOptions viewport, ScreenshotOptions options, RevisionInfo revision) {149 LaunchOptions launchOptions = new LaunchOptions() {150 ExecutablePath = revision.ExecutablePath,151 Args = BrowserArgs,152 Headless = true,153 DefaultViewport = viewport,154 Timeout = 0155 };156 browser = await Puppeteer.LaunchAsync(launchOptions);157 try {158 var page = await browser.NewPageAsync();159 try {160 NavigationOptions navigationOptions = new NavigationOptions() {161 Timeout = 0162 };163 string originalUserAgent = await browser.GetUserAgentAsync();164 await page.SetUserAgentAsync($"{originalUserAgent} {USER_AGENT_SUFFIX}");165 if (cookies.Any()) {166 await page.SetCookieAsync(cookies.ToArray());167 }168 await page.GoToAsync(url, navigationOptions);169 return await page.ScreenshotDataAsync(options);170 } finally {171 await Cleanup(page);172 }173 } finally {174 Cleanup(browser);175 }176 }177 public bool UserAgentMatches(string userAgent) {178 return userAgent.EndsWith($" {USER_AGENT_SUFFIX}");...
FacebookBrowser.cs
Source:FacebookBrowser.cs
...61 public async Task Login()62 {63 var browser = await GetLaunchedBrowser();64 var page = (await browser.PagesAsync()).Single();65 await page.SetUserAgentAsync(UserAgentString);66 await page.GoToAsync(FacebookUrl, WaitUntilNavigation.Networkidle0);67 await page.ClickAsync("button[data-testid=cookie-policy-dialog-accept-button]");68 await page.WaitForSelectorAsync("button[data-testid=cookie-policy-dialog-accept-button]", new WaitForSelectorOptions { Hidden = true });69 await page.TypeAsync("#email", botSettings.Facebook.Login);70 await page.TypeAsync("#pass", botSettings.Facebook.Password);71 await page.ClickAsync("button[name=login]", new ClickOptions { ClickCount = 3 });72 await page.WaitForSelectorAsync("form[action^='/logout.php']");73 await page.GoToAsync("about:blank");74 logger.LogInformation("Logged to FB");75 }76 public async Task<IList<FacebookPost>> GetTimelinePosts()77 {78 var browser = await GetLaunchedBrowser();79 var page = (await browser.PagesAsync()).Single();80 await page.SetUserAgentAsync(UserAgentString);81 await page.GoToAsync(FacebookUserUrl);82 await page.WaitForSelectorAsync("div[data-pagelet='ProfileTimeline']");83 var sw = new Stopwatch();84 sw.Start();85 var loadedPostCount = 0;86 while (loadedPostCount < 10)87 {88 if (sw.Elapsed.Seconds > 120)89 {90 sw.Stop();91 await page.GoToAsync("about:blank");92 throw new InvalidOperationException();93 }94 loadedPostCount = await LoadTimelinePosts(page);...
GetPage.cs
Source:GetPage.cs
...48 //{ "user-agent", "Mozilla/5.0 (iPad; CPU OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A5355d Safari/8536.25" }49 };50 //en-GB,en-US;q=0.9,en;q=0.851 await PageResults.SetExtraHttpHeadersAsync(dic);52 await PageResults.SetUserAgentAsync("Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36");53 foreach (var page in Pages)54 {55 page.DefaultTimeout = 0;56 await page.SetExtraHttpHeadersAsync(dic);57 await page.SetUserAgentAsync("Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36");58 59 var response = await page.GoToAsync("https://www.bet365.com/#/AVR/B24/R^1/", navigation);60 //await page.SetCookieAsync(await page.GetCookiesAsync());61 if (!response.Ok)62 return false;63 }64 return await NavigateToResultsDiv();65 }66 catch67 {68 return false;69 }70 }71 private static async Task<bool> NavigateToResultsDiv()...
WebPage.cs
Source:WebPage.cs
...29 Response response = await _page.GoToAsync(url, timeout, waitUntil);30 IWebResponse webResponse = new WebResponse(response);31 return webResponse;32 }33 public async Task SetUserAgentAsync(string userAgent)34 {35 await _page.SetUserAgentAsync(userAgent);36 }37 public async Task<string> GetContentAsync()38 {39 return await _page.GetContentAsync();40 }41 public async Task<IWebRequest> WaitForRequestAsync(Func<Request, bool> predicate, WaitForOptions options = null)42 {43 await ConfigurePage();44 Request request = await _page.WaitForRequestAsync(predicate, options);45 IWebRequest webRequest = new WebRequest(request);46 return webRequest;47 }48 public async Task<CookieParam[]> GetCookiesAsync(params string[] urls)49 {...
SetUserAgentTests.cs
Source:SetUserAgentTests.cs
...12 [Fact]13 public async Task ShouldWork()14 {15 Assert.Contains("Mozilla", await Page.EvaluateFunctionAsync<string>("() => navigator.userAgent"));16 await Page.SetUserAgentAsync("foobar");17 var userAgentTask = Server.WaitForRequest("/empty.html", request => request.Headers["User-Agent"].ToString());18 await Task.WhenAll(19 userAgentTask,20 Page.GoToAsync(TestConstants.EmptyPage)21 );22 Assert.Equal("foobar", userAgentTask.Result);23 }24 [Fact]25 public async Task ShouldSimulateDeviceUserAgent()26 {27 await Page.GoToAsync(TestConstants.ServerUrl + "/mobile.html");28 Assert.Contains("Chrome", await Page.EvaluateExpressionAsync<string>("navigator.userAgent"));29 await Page.SetUserAgentAsync(TestConstants.IPhone.UserAgent);30 Assert.Contains("Safari", await Page.EvaluateExpressionAsync<string>("navigator.userAgent"));31 }32 }33}...
UserAgentPatcher.cs
Source:UserAgentPatcher.cs
...5 public static class UserAgentPatcher6 {7 public static async Task SetupInterceptor(Browser browser, string userAgent)8 {9 async Task InterceptPage(Page page) => await page.SetUserAgentAsync(userAgent);10 var pages = await browser.PagesAsync();11 foreach (var page in pages) await InterceptPage(page);12 browser.TargetCreated += async (obj1, args1) =>13 {14 try15 {16 var target = args1.Target;17 var page = await target.PageAsync();18 if (page == null) return;19 await InterceptPage(page);20 }21 // Protocol error (Page.createIsolatedWorld): Could not create isolated world22 catch (PuppeteerException) { }23 };...
AnonymizeUaPlugin.cs
Source:AnonymizeUaPlugin.cs
...21 var regex = new Regex(@"/\(([^)]+)\)/");22 ua = regex.Replace(ua, "(Windows NT 10.0; Win64; x64)");23 if (_customAction != null)24 ua = _customAction(ua);25 await page.SetUserAgentAsync(ua);26 }27 }28}...
SetUserAgentAsync
Using AI Code Generation
1using System;2using System.Threading.Tasks;3using PuppeteerSharp;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 {13 var page = await browser.NewPageAsync();14 await page.SetUserAgentAsync("Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36");15 }16 }17 }18}19using System;20using System.Threading.Tasks;21using PuppeteerSharp;22{23 {24 static async Task Main(string[] args)25 {26 {27 Args = new string[] { "--no-sandbox" }28 };29 using (var browser = await Puppeteer.LaunchAsync(options))30 {31 var page = await browser.NewPageAsync();32 await page.SetUserAgentAsync("Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36");33 }34 }35 }36}37using System;38using System.Threading.Tasks;39using PuppeteerSharp;40{41 {42 static async Task Main(string[] args)43 {44 {45 Args = new string[] { "--no-sandbox" }46 };47 using (var browser = await Puppeteer.LaunchAsync(options))48 {49 var page = await browser.NewPageAsync();50 await page.SetUserAgentAsync("Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML
SetUserAgentAsync
Using AI Code Generation
1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5 {6 static async Task Main(string[] args)7 {8 {9 };10 using (var browser = await Puppeteer.LaunchAsync(options))11 {12 var page = await browser.NewPageAsync();13 await page.SetUserAgentAsync("Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.163 Safari/537.36");14 await page.WaitForSelectorAsync("#detected_value");15 var userAgent = await page.EvaluateExpressionAsync<string>("document.querySelector('#detected_value').textContent");16 Console.WriteLine(userAgent);17 }18 }19 }20}21Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.163 Safari/537.36
SetUserAgentAsync
Using AI Code Generation
1using System;2using System.Threading.Tasks;3using PuppeteerSharp;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 {13 using (var page = await browser.NewPageAsync())14 {15 await page.SetUserAgentAsync("Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36");16 await page.ScreenshotAsync("path/to/save/screenshot.png");17 }18 }19 }20 }21}
SetUserAgentAsync
Using AI Code Generation
1using PuppeteerSharp;2using System;3using System.Threading.Tasks;4{5 {6 public static async Task Main(string[] args)7 {8 await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);9 var browser = await Puppeteer.LaunchAsync(new LaunchOptions10 {11 });12 var page = await browser.NewPageAsync();13 await page.SetUserAgentAsync("Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.81 Safari/537.36");14 Console.ReadLine();15 }16 }17}
SetUserAgentAsync
Using AI Code Generation
1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5 {6 static async Task Main(string[] args)7 {8 Console.WriteLine("Hello World!");9 {10 Args = new string[] { "--start-maximized" }11 };12 var browser = await Puppeteer.LaunchAsync(options);13 var page = await browser.NewPageAsync();14 await page.SetUserAgentAsync("Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36");15 await page.ScreenshotAsync("google.png");16 await browser.CloseAsync();17 }18 }19}20using System;21using System.Threading.Tasks;22using PuppeteerSharp;23{24 {25 static async Task Main(string[] args)26 {27 Console.WriteLine("Hello World!");28 {29 Args = new string[] { "--start-maximized" }30 };31 var browser = await Puppeteer.LaunchAsync(options);32 var page = await browser.NewPageAsync();33 await page.SetUserAgentAsync("Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36");34 await page.ScreenshotAsync("google.png");35 await browser.CloseAsync();36 }37 }38}
SetUserAgentAsync
Using AI Code Generation
1using PuppeteerSharp;2using System.Threading.Tasks;3{4 {5 static async Task Main(string[] args)6 {7 await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);8 using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions9 {10 }))11 using (var page = await browser.NewPageAsync())12 {13 await page.SetUserAgentAsync("Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36");14 }15 }16 }17}
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Most used method in Page
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- GetContentAsync
- SetContentAsync
- GoToAsync
- PdfAsync
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- ScreenshotDataAsync
- GetTitleAsync
- CloseAsync
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- EvaluateFunctionAsync
- SetUserAgentAsync
- SetExtraHttpHeadersAsync
- AuthenticateAsync
- ReloadAsync
- SelectAsync
- WaitForTimeoutAsync
- WaitForFunctionAsync
- WaitForExpressionAsync
- WaitForSelectorAsync
- WaitForXPathAsync
- WaitForNavigationAsync
- WaitForNetworkIdleAsync
- Evaluate
- requestEventListener
- responseEventListener
- Cleanup
- WaitForRequestAsync
- WaitForResponseAsync
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- OnPopup
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