How to use WaitForSelectorAsync method of PuppeteerSharp.Frame class

Best Puppeteer-sharp code snippet using PuppeteerSharp.Frame.WaitForSelectorAsync

FrameWaitForSelectorTests.cs

Source:FrameWaitForSelectorTests.cs Github

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...18 public async Task ShouldImmediatelyResolveTaskIfNodeExists()19 {20 await Page.GoToAsync(TestConstants.EmptyPage);21 var frame = Page.MainFrame;22 await frame.WaitForSelectorAsync("*");23 await frame.EvaluateFunctionAsync(AddElement, "div");24 await frame.WaitForSelectorAsync("div");25 }26 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should work with removed MutationObserver")]27 [SkipBrowserFact(skipFirefox: true)]28 public async Task ShouldWorkWithRemovedMutationObserver()29 {30 await Page.EvaluateExpressionAsync("delete window.MutationObserver");31 var waitForSelector = Page.WaitForSelectorAsync(".zombo");32 await Task.WhenAll(33 waitForSelector,34 Page.SetContentAsync("<div class='zombo'>anything</​div>"));35 Assert.Equal("anything", await Page.EvaluateFunctionAsync<string>("x => x.textContent", await waitForSelector));36 }37 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should resolve promise when node is added")]38 [PuppeteerFact]39 public async Task ShouldResolveTaskWhenNodeIsAdded()40 {41 await Page.GoToAsync(TestConstants.EmptyPage);42 var frame = Page.MainFrame;43 var watchdog = frame.WaitForSelectorAsync("div");44 await frame.EvaluateFunctionAsync(AddElement, "br");45 await frame.EvaluateFunctionAsync(AddElement, "div");46 var eHandle = await watchdog;47 var property = await eHandle.GetPropertyAsync("tagName");48 var tagName = await property.JsonValueAsync<string>();49 Assert.Equal("DIV", tagName);50 }51 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should work when node is added through innerHTML")]52 [PuppeteerFact]53 public async Task ShouldWorkWhenNodeIsAddedThroughInnerHTML()54 {55 await Page.GoToAsync(TestConstants.EmptyPage);56 var watchdog = Page.WaitForSelectorAsync("h3 div");57 await Page.EvaluateFunctionAsync(AddElement, "span");58 await Page.EvaluateExpressionAsync("document.querySelector('span').innerHTML = '<h3><div></​div></​h3>'");59 await watchdog;60 }61 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "Page.waitForSelector is shortcut for main frame")]62 [PuppeteerFact]63 public async Task PageWaitForSelectorAsyncIsShortcutForMainFrame()64 {65 await Page.GoToAsync(TestConstants.EmptyPage);66 await FrameUtils.AttachFrameAsync(Page, "frame1", TestConstants.EmptyPage);67 var otherFrame = Page.FirstChildFrame();68 var watchdog = Page.WaitForSelectorAsync("div");69 await otherFrame.EvaluateFunctionAsync(AddElement, "div");70 await Page.EvaluateFunctionAsync(AddElement, "div");71 var eHandle = await watchdog;72 Assert.Equal(Page.MainFrame, eHandle.ExecutionContext.Frame);73 }74 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should run in specified frame")]75 [PuppeteerFact]76 public async Task ShouldRunInSpecifiedFrame()77 {78 await FrameUtils.AttachFrameAsync(Page, "frame1", TestConstants.EmptyPage);79 await FrameUtils.AttachFrameAsync(Page, "frame2", TestConstants.EmptyPage);80 var frame1 = Page.FirstChildFrame();81 var frame2 = Page.Frames.ElementAt(2);82 var waitForSelectorPromise = frame2.WaitForSelectorAsync("div");83 await frame1.EvaluateFunctionAsync(AddElement, "div");84 await frame2.EvaluateFunctionAsync(AddElement, "div");85 var eHandle = await waitForSelectorPromise;86 Assert.Equal(frame2, eHandle.ExecutionContext.Frame);87 }88 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should throw when frame is detached")]89 [SkipBrowserFact(skipFirefox: true)]90 public async Task ShouldThrowWhenFrameIsDetached()91 {92 await FrameUtils.AttachFrameAsync(Page, "frame1", TestConstants.EmptyPage);93 var frame = Page.FirstChildFrame();94 var waitTask = frame.WaitForSelectorAsync(".box").ContinueWith(task => task?.Exception?.InnerException);95 await FrameUtils.DetachFrameAsync(Page, "frame1");96 var waitException = await waitTask;97 Assert.NotNull(waitException);98 Assert.Contains("waitForFunction failed: frame got detached.", waitException.Message);99 }100 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should survive cross-process navigation")]101 [PuppeteerFact]102 public async Task ShouldSurviveCrossProcessNavigation()103 {104 var boxFound = false;105 var waitForSelector = Page.WaitForSelectorAsync(".box").ContinueWith(_ => boxFound = true);106 await Page.GoToAsync(TestConstants.EmptyPage);107 Assert.False(boxFound);108 await Page.ReloadAsync();109 Assert.False(boxFound);110 await Page.GoToAsync(TestConstants.CrossProcessHttpPrefix + "/​grid.html");111 await waitForSelector;112 Assert.True(boxFound);113 }114 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should wait for visible")]115 [PuppeteerFact]116 public async Task ShouldWaitForVisible()117 {118 var divFound = false;119 var waitForSelector = Page.WaitForSelectorAsync("div", new WaitForSelectorOptions { Visible = true })120 .ContinueWith(_ => divFound = true);121 await Page.SetContentAsync("<div style='display: none; visibility: hidden;'>1</​div>");122 Assert.False(divFound);123 await Page.EvaluateExpressionAsync("document.querySelector('div').style.removeProperty('display')");124 Assert.False(divFound);125 await Page.EvaluateExpressionAsync("document.querySelector('div').style.removeProperty('visibility')");126 Assert.True(await waitForSelector);127 Assert.True(divFound);128 }129 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should wait for visible recursively")]130 [PuppeteerFact]131 public async Task ShouldWaitForVisibleRecursively()132 {133 var divVisible = false;134 var waitForSelector = Page.WaitForSelectorAsync("div#inner", new WaitForSelectorOptions { Visible = true })135 .ContinueWith(_ => divVisible = true);136 await Page.SetContentAsync("<div style='display: none; visibility: hidden;'><div id='inner'>hi</​div></​div>");137 Assert.False(divVisible);138 await Page.EvaluateExpressionAsync("document.querySelector('div').style.removeProperty('display')");139 Assert.False(divVisible);140 await Page.EvaluateExpressionAsync("document.querySelector('div').style.removeProperty('visibility')");141 Assert.True(await waitForSelector);142 Assert.True(divVisible);143 }144 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "hidden should wait for visibility: hidden")]145 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "hidden should wait for display: none")]146 [Theory]147 [InlineData("visibility", "hidden")]148 [InlineData("display", "none")]149 public async Task HiddenShouldWaitForVisibility(string propertyName, string propertyValue)150 {151 var divHidden = false;152 await Page.SetContentAsync("<div style='display: block;'></​div>");153 var waitForSelector = Page.WaitForSelectorAsync("div", new WaitForSelectorOptions { Hidden = true })154 .ContinueWith(_ => divHidden = true);155 await Page.WaitForSelectorAsync("div"); /​/​ do a round trip156 Assert.False(divHidden);157 await Page.EvaluateExpressionAsync($"document.querySelector('div').style.setProperty('{propertyName}', '{propertyValue}')");158 Assert.True(await waitForSelector);159 Assert.True(divHidden);160 }161 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "hidden should wait for removal")]162 [PuppeteerFact]163 public async Task HiddenShouldWaitForRemoval()164 {165 await Page.SetContentAsync("<div></​div>");166 var divRemoved = false;167 var waitForSelector = Page.WaitForSelectorAsync("div", new WaitForSelectorOptions { Hidden = true })168 .ContinueWith(_ => divRemoved = true);169 await Page.WaitForSelectorAsync("div"); /​/​ do a round trip170 Assert.False(divRemoved);171 await Page.EvaluateExpressionAsync("document.querySelector('div').remove()");172 Assert.True(await waitForSelector);173 Assert.True(divRemoved);174 }175 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should return null if waiting to hide non-existing element")]176 [PuppeteerFact]177 public async Task ShouldReturnNullIfWaitingToHideNonExistingElement()178 {179 var handle = await Page.WaitForSelectorAsync("non-existing", new WaitForSelectorOptions { Hidden = true });180 Assert.Null(handle);181 }182 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should respect timeout")]183 [PuppeteerFact]184 public async Task ShouldRespectTimeout()185 {186 var exception = await Assert.ThrowsAsync<WaitTaskTimeoutException>(async ()187 => await Page.WaitForSelectorAsync("div", new WaitForSelectorOptions { Timeout = 10 }));188 Assert.Contains("waiting for selector 'div' failed: timeout", exception.Message);189 }190 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should have an error message specifically for awaiting an element to be hidden")]191 [PuppeteerFact]192 public async Task ShouldHaveAnErrorMessageSpecificallyForAwaitingAnElementToBeHidden()193 {194 await Page.SetContentAsync("<div></​div>");195 var exception = await Assert.ThrowsAsync<WaitTaskTimeoutException>(async ()196 => await Page.WaitForSelectorAsync("div", new WaitForSelectorOptions { Hidden = true, Timeout = 10 }));197 Assert.Contains("waiting for selector 'div' to be hidden failed: timeout", exception.Message);198 }199 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should respond to node attribute mutation")]200 [PuppeteerFact]201 public async Task ShouldRespondToNodeAttributeMutation()202 {203 var divFound = false;204 var waitForSelector = Page.WaitForSelectorAsync(".zombo").ContinueWith(_ => divFound = true);205 await Page.SetContentAsync("<div class='notZombo'></​div>");206 Assert.False(divFound);207 await Page.EvaluateExpressionAsync("document.querySelector('div').className = 'zombo'");208 Assert.True(await waitForSelector);209 }210 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should return the element handle")]211 [PuppeteerFact]212 public async Task ShouldReturnTheElementHandle()213 {214 var waitForSelector = Page.WaitForSelectorAsync(".zombo");215 await Page.SetContentAsync("<div class='zombo'>anything</​div>");216 Assert.Equal("anything", await Page.EvaluateFunctionAsync<string>("x => x.textContent", await waitForSelector));217 }218 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should have correct stack trace for timeout")]219 [PuppeteerFact]220 public async Task ShouldHaveCorrectStackTraceForTimeout()221 {222 var exception = await Assert.ThrowsAsync<WaitTaskTimeoutException>(async ()223 => await Page.WaitForSelectorAsync(".zombo", new WaitForSelectorOptions { Timeout = 10 }));224 Assert.Contains("WaitForSelectorTests", exception.StackTrace);225 }226 }227}...

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PuppeteerMethods.cs

Source:PuppeteerMethods.cs Github

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...141 try142 {143 WaitUntilNavigation[] waitUntil = new[] { WaitUntilNavigation.Networkidle0, WaitUntilNavigation.Networkidle2, WaitUntilNavigation.DOMContentLoaded, WaitUntilNavigation.Load };144 await page.GoToAsync("https:/​/​tr-tr.facebook.com/​", new NavigationOptions { WaitUntil = waitUntil });145 await page.WaitForSelectorAsync("input#email");146 /​/​You must change your facebook login informations.147 await page.TypeAsync("input#email", username);148 await page.TypeAsync("input#pass", password);149 await page.ClickAsync("button[name='login']");150 await page.WaitForNavigationAsync();151 var HtmlContent = await page.GetContentAsync();152 var Cookie = await page.GetCookiesAsync();153 var TitleOfPage = await page.GetTitleAsync();154 var filePath = "D:\\PdfFiles";155 var fileName = Guid.NewGuid() + ".pdf";156 if (!Directory.Exists(filePath))157 Directory.CreateDirectory(filePath);158 await page.PdfAsync(Path.Combine(filePath, fileName));159 return new SuccessPuppeteerResult("Pdf Created Succesfully");160 }161 catch (Exception ex)162 {163 return new ErrorPuppeteerResult("Error Occured! Detail: " + ex.Message);164 }165 finally166 {167 CloseChromium(page);168 }169 }170 }171 public static async Task<List<string>> VideoLinkList(Page page)172 {173 WaitUntilNavigation[] waitUntil = new[] { WaitUntilNavigation.Networkidle0, WaitUntilNavigation.Networkidle2, WaitUntilNavigation.DOMContentLoaded, WaitUntilNavigation.Load }; 174 var next = @"document.getElementById('pnnext')";175 var nexts = await page.EvaluateExpressionAsync<object>(next);176 var linkList = new List<string>();177 var isLastPage = (nexts == null);178 while ((nexts != null) || !isLastPage)179 {180 var jsSelectAllAnchors = @"Array.from(document.querySelectorAll('.g'))";181 var urls = await page.EvaluateExpressionAsync<object[]>(jsSelectAllAnchors);182 for (int i = 0; i < urls.Length; i++)183 {184 var query = $"document.querySelectorAll('.g')[{i}].getElementsByTagName('a')[0].href";185 linkList.Add(await page.EvaluateExpressionAsync<string>(query));186 }187 nexts = await page.EvaluateExpressionAsync<object>(next);188 if (nexts != null)189 {190 var nextHref = @"document.getElementById('pnnext').href";191 var nextHrefUrl = await page.EvaluateExpressionAsync<string>(nextHref);192 isLastPage = (nexts == null) && !string.IsNullOrEmpty(nextHrefUrl);193 await page.GoToAsync(nextHrefUrl, new NavigationOptions { WaitUntil = waitUntil });194 nexts = await page.EvaluateExpressionAsync<object>(next);195 }196 else197 {198 isLastPage = true;199 }200 }201 return linkList;202 } 203 public static async Task<PuppeteerDataResult<List<string>>> GetVideoSearchVideoResultUrlList(string url, string searchWord)204 {205 using (var page = await OpenChromiumPage())206 {207 WaitUntilNavigation[] waitUntil = new[] { WaitUntilNavigation.Networkidle0, WaitUntilNavigation.Networkidle2, WaitUntilNavigation.DOMContentLoaded, WaitUntilNavigation.Load };208 await page.GoToAsync(url, new NavigationOptions { WaitUntil = waitUntil });209 await SearchOnGoogle(searchWord, page);210 /​/​Click Video Tab211 var videoTabElement = @"document.getElementsByClassName('hdtb-mitem')[4].getElementsByTagName('a')[0].href";212 var videoTabLink = await page.EvaluateExpressionAsync<string>(videoTabElement); 213 await page.GoToAsync(videoTabLink, new NavigationOptions { WaitUntil = waitUntil });214 215 var result= await VideoLinkList(page); 216 return new SuccessPuppeteerDataResult<List<string>>(result, "Get Title Successfully"); 217 }218 }219 public static async Task<PuppeteerDataResult<string>> GetSearchStaticticDetail(string url, string searchWord)220 {221 using (var page = await OpenChromiumPage())222 {223 WaitUntilNavigation[] waitUntil = new[] { WaitUntilNavigation.Networkidle0, WaitUntilNavigation.Networkidle2, WaitUntilNavigation.DOMContentLoaded, WaitUntilNavigation.Load };224 await page.GoToAsync(url, new NavigationOptions { WaitUntil = waitUntil });225 await SearchOnGoogle(searchWord, page);226 var jsExpression = @"document.querySelectorAll('#result-stats')[0].innerHTML";227 var result = await page.EvaluateExpressionAsync<string>(jsExpression);228 return new SuccessPuppeteerDataResult<string>(result, "");229 }230 }231 private static async Task SearchOnGoogle(string searchWord, Page page)232 {233 WaitUntilNavigation[] waitUntil = new[] { WaitUntilNavigation.Networkidle0, WaitUntilNavigation.Networkidle2, WaitUntilNavigation.DOMContentLoaded, WaitUntilNavigation.Load };234 /​/​Search Text Input235 await page.WaitForSelectorAsync("input[name='q']");236 await page.TypeAsync("input[name='q']", searchWord);237 /​/​Search on Google Button and Click Operation238 await page.WaitForSelectorAsync("input[name='btnK']");239 await page.EvaluateExpressionAsync("document.querySelector(\"input[name='btnK']\").click()");240 await page.WaitForNavigationAsync(new NavigationOptions { WaitUntil = waitUntil });241 }242 }243}...

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Authorization.cs

Source:Authorization.cs Github

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...57 WaitForSelectorOptions WaitForSelectorTimeout = new WaitForSelectorOptions { Timeout = DefaultTimeout };58 Log.Information($"DefaultTimeout: {p.DefaultTimeout}");59 Log.Information($"DefaultNavigationTimeout: {p.DefaultNavigationTimeout}");60 const string button = "body > app-root > n3-grid > app-login > div > div.notice > div > app-login-form > div > button";61 await p.WaitForSelectorAsync(button, WaitForSelectorTimeout);62 await System.Threading.Tasks.Task.Delay(10000);63 await p.ClickAsync(button);64 Log.Information("Первый клик {Button}: успешно!", "Войти с ЕСИА");65 Log.Information($"{timer.ElapsedMilliseconds}");66 timer.Restart();67 p = await GetPage(browser, "https:/​/​esia.gosuslugi.ru");68 Log.Information($"DefaultTimeout: {p.DefaultTimeout}");69 Log.Information($"DefaultNavigationTimeout: {p.DefaultNavigationTimeout}");70 /​/​ Авторизация71 await p.WaitForSelectorAsync("#mobileOrEmail", WaitForSelectorTimeout);72 await p.FocusAsync("#mobileOrEmail");73 await p.Keyboard.TypeAsync(ConfigJson.Login);74 Log.Information($"Login: {timer.ElapsedMilliseconds}");75 timer.Restart();76 await p.WaitForSelectorAsync("#password", WaitForSelectorTimeout);77 await p.FocusAsync("#password");78 await p.Keyboard.TypeAsync(ConfigJson.Password);79 Log.Information($"Password: {timer.ElapsedMilliseconds}");80 timer.Restart();81 await p.WaitForSelectorAsync("#loginByPwdButton > span", WaitForSelectorTimeout);82 await p.ClickAsync("#loginByPwdButton > span");83 Log.Information($"ClickAuthorizationButton: {timer.ElapsedMilliseconds}");84 Log.Information("Авторизация: успешно!");85 timer.Stop();86 /​* Куки нужны для того, чтобы сайт меня опознал87 * при отправке http-запроса на сервер эл. дневника */​88 /​/​ 10 попыток получения cookie.89 Cookie cookie;90 int count = 0;91 int attempts = (DefaultTimeout /​ 1000);92 do93 {94 if (count > attempts) throw new Exception("Cookie X-JMT-Token is not present.");95 await System.Threading.Tasks.Task.Delay(1000);...

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WaitForSelectorTests.cs

Source:WaitForSelectorTests.cs Github

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...16 {17 await Page.GoToAsync(TestConstants.EmptyPage);18 var frame = Page.MainFrame;19 var added = false;20 await frame.WaitForSelectorAsync("*").ContinueWith(_ => added = true);21 Assert.True(added);22 added = false;23 await frame.EvaluateFunctionAsync(AddElement, "div");24 await frame.WaitForSelectorAsync("div").ContinueWith(_ => added = true);25 Assert.True(added);26 }27 [Fact]28 public async Task ShouldResolveTaskWhenNodeIsAdded()29 {30 await Page.GoToAsync(TestConstants.EmptyPage);31 var frame = Page.MainFrame;32 var added = false;33 var watchdog = frame.WaitForSelectorAsync("div").ContinueWith(_ => added = true);34 /​/​ run nop function..35 await frame.EvaluateExpressionAsync("42");36 /​/​ .. to be sure that waitForSelector promise is not resolved yet.37 Assert.False(added);38 await frame.EvaluateFunctionAsync(AddElement, "br");39 Assert.False(added);40 await frame.EvaluateFunctionAsync(AddElement, "div");41 await watchdog;42 Assert.True(added);43 }44 [Fact]45 public async Task ShouldWorkWhenNodeIsAddedThroughInnerHTML()46 {47 await Page.GoToAsync(TestConstants.EmptyPage);48 var watchdog = Page.WaitForSelectorAsync("h3 div");49 await Page.EvaluateFunctionAsync(AddElement, "span");50 await Page.EvaluateExpressionAsync("document.querySelector('span').innerHTML = '<h3><div></​div></​h3>'");51 await watchdog;52 }53 [Fact]54 public async Task PageWaitForSelectorAsyncIsShortcutForMainFrame()55 {56 await Page.GoToAsync(TestConstants.EmptyPage);57 await FrameUtils.AttachFrameAsync(Page, "frame1", TestConstants.EmptyPage);58 var otherFrame = Page.Frames.ElementAt(1);59 var added = false;60 var waitForSelectorTask = Page.WaitForSelectorAsync("div").ContinueWith(_ => added = true);61 await otherFrame.EvaluateFunctionAsync(AddElement, "div");62 Assert.False(added);63 await Page.EvaluateFunctionAsync(AddElement, "div");64 Assert.True(await waitForSelectorTask);65 Assert.True(added);66 }67 [Fact]68 public async Task ShouldRunInSpecifiedFrame()69 {70 await FrameUtils.AttachFrameAsync(Page, "frame1", TestConstants.EmptyPage);71 await FrameUtils.AttachFrameAsync(Page, "frame2", TestConstants.EmptyPage);72 var frame1 = Page.Frames.ElementAt(1);73 var frame2 = Page.Frames.ElementAt(2);74 var added = false;75 var selectorTask = frame2.WaitForSelectorAsync("div").ContinueWith(_ => added = true);76 Assert.False(added);77 await frame1.EvaluateFunctionAsync(AddElement, "div");78 Assert.False(added);79 await frame2.EvaluateFunctionAsync(AddElement, "div");80 Assert.True(added);81 }82 [Fact]83 public async Task ShouldThrowIfEvaluationFailed()84 {85 await Page.EvaluateOnNewDocumentAsync(@"function() {86 document.querySelector = null;87 }");88 await Page.GoToAsync(TestConstants.EmptyPage);89 var exception = await Assert.ThrowsAnyAsync<PuppeteerException>(() => Page.WaitForSelectorAsync("*"));90 Assert.Contains("document.querySelector is not a function", exception.Message);91 }92 [Fact]93 public async Task ShouldThrowWhenFrameIsDetached()94 {95 await FrameUtils.AttachFrameAsync(Page, "frame1", TestConstants.EmptyPage);96 var frame = Page.Frames.ElementAt(1);97 var waitTask = frame.WaitForSelectorAsync(".box").ContinueWith(task => task?.Exception?.InnerException);98 await FrameUtils.DetachFrameAsync(Page, "frame1");99 var waitException = await waitTask;100 Assert.NotNull(waitException);101 Assert.Contains("waitForSelector failed: frame got detached", waitException.Message);102 }103 [Fact]104 public async Task ShouldSurviveCrossProcessNavigation()105 {106 var boxFound = false;107 var waitForSelector = Page.WaitForSelectorAsync(".box").ContinueWith(_ => boxFound = true);108 await Page.GoToAsync(TestConstants.EmptyPage);109 Assert.False(boxFound);110 await Page.ReloadAsync();111 Assert.False(boxFound);112 await Page.GoToAsync(TestConstants.CrossProcessHttpPrefix + "/​grid.html");113 await waitForSelector;114 Assert.True(boxFound);115 }116 [Fact]117 public async Task ShouldWaitForVisible()118 {119 var divFound = false;120 var waitForSelector = Page.WaitForSelectorAsync("div", new WaitForSelectorOptions { Visible = true })121 .ContinueWith(_ => divFound = true);122 await Page.SetContentAsync("<div style='display: none; visibility: hidden;'>1</​div>");123 Assert.False(divFound);124 await Page.EvaluateExpressionAsync("document.querySelector('div').style.removeProperty('display')");125 Assert.False(divFound);126 await Page.EvaluateExpressionAsync("document.querySelector('div').style.removeProperty('visibility')");127 Assert.True(await waitForSelector);128 Assert.True(divFound);129 }130 [Fact]131 public async Task ShouldWaitForVisibleRecursively()132 {133 var divVisible = false;134 var waitForSelector = Page.WaitForSelectorAsync("div#inner", new WaitForSelectorOptions { Visible = true })135 .ContinueWith(_ => divVisible = true);136 await Page.SetContentAsync("<div style='display: none; visibility: hidden;'><div id='inner'>hi</​div></​div>");137 Assert.False(divVisible);138 await Page.EvaluateExpressionAsync("document.querySelector('div').style.removeProperty('display')");139 Assert.False(divVisible);140 await Page.EvaluateExpressionAsync("document.querySelector('div').style.removeProperty('visibility')");141 Assert.True(await waitForSelector);142 Assert.True(divVisible);143 }144 [Theory]145 [InlineData("visibility", "hidden")]146 [InlineData("display", "none")]147 public async Task HiddenShouldWaitForVisibility(string propertyName, string propertyValue)148 {149 var divHidden = false;150 await Page.SetContentAsync("<div style='display: block;'></​div>");151 var waitForSelector = Page.WaitForSelectorAsync("div", new WaitForSelectorOptions { Hidden = true })152 .ContinueWith(_ => divHidden = true);153 await Page.WaitForSelectorAsync("div"); /​/​ do a round trip154 Assert.False(divHidden);155 await Page.EvaluateExpressionAsync($"document.querySelector('div').style.setProperty('{propertyName}', '{propertyValue}')");156 Assert.True(await waitForSelector);157 Assert.True(divHidden);158 }159 [Fact]160 public async Task HiddenShouldWaitForRemoval()161 {162 await Page.SetContentAsync("<div></​div>");163 var divRemoved = false;164 var waitForSelector = Page.WaitForSelectorAsync("div", new WaitForSelectorOptions { Hidden = true })165 .ContinueWith(_ => divRemoved = true);166 await Page.WaitForSelectorAsync("div"); /​/​ do a round trip167 Assert.False(divRemoved);168 await Page.EvaluateExpressionAsync("document.querySelector('div').remove()");169 Assert.True(await waitForSelector);170 Assert.True(divRemoved);171 }172 [Fact]173 public async Task ShouldRespectTimeout()174 {175 var exception = await Assert.ThrowsAnyAsync<PuppeteerException>(async ()176 => await Page.WaitForSelectorAsync("div", new WaitForSelectorOptions { Timeout = 10 }));177 Assert.NotNull(exception);178 Assert.Contains("waiting failed: timeout", exception.Message);179 }180 [Fact]181 public async Task ShouldRespondToNodeAttributeMutation()182 {183 var divFound = false;184 var waitForSelector = Page.WaitForSelectorAsync(".zombo").ContinueWith(_ => divFound = true);185 await Page.SetContentAsync("<div class='notZombo'></​div>");186 Assert.False(divFound);187 await Page.EvaluateExpressionAsync("document.querySelector('div').className = 'zombo'");188 Assert.True(await waitForSelector);189 }190 [Fact]191 public async Task ShouldReturnTheElementHandle()192 {193 var waitForSelector = Page.WaitForSelectorAsync(".zombo");194 await Page.SetContentAsync("<div class='zombo'>anything</​div>");195 Assert.Equal("anything", await Page.EvaluateFunctionAsync<string>("x => x.textContent", await waitForSelector));196 }197 }198}...

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Robot.cs

Source:Robot.cs Github

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...85 OnMessage("登录");86 _ = await page.GoToAsync("https:/​/​i.qq.com");87 88 var loginFrame = await page.WaitForFrameAsync("login_frame");89 await (await loginFrame.WaitForSelectorAsync("#switcher_plogin")).ClickAsync();90 await (await loginFrame.WaitForSelectorAsync("#u")).TypeAsync(Account.Username);91 await (await loginFrame.WaitForSelectorAsync("#p")).TypeAsync(Account.Password);92 await (await loginFrame.WaitForSelectorAsync("#login_button")).ClickAsync();93 _ = await page.WaitForNavigationAsync();94 }95 private async Task UploadImage()96 {97 OnMessage("点击相册");98 await (await page.WaitForSelectorAsync("a[title=\"相册\"]")).ClickAsync();99 var tphotoFrame = await page.WaitForFrameAsync("tphoto", "app_canvas_frame");100 OnMessage("打开上传对话框");101 await (await tphotoFrame.WaitForSelectorAsync(".j-uploadentry-photo")).ClickAsync();102 var uploadFrame = await page.WaitForFrameAsync("photoUploadDialog");103 await Delay();104 var imagePath = MainViewModel.RandomImage;105 OnMessage($"选择随机文件 {imagePath}");106 var fileChooserTask = page.WaitForFileChooserAsync();107 await Task.WhenAll(fileChooserTask, uploadFrame.ClickAsync(".btn-select-img"));108 await fileChooserTask.Result.AcceptAsync(imagePath.Replace(@"\", @"\\"));109 OnMessage("上传文件");110 await (await uploadFrame.WaitForSelectorAsync(".op-btn.btn-upload")).ClickAsync();111 _ = await page.WaitForSelectorAsync("#photoUploadDialog", new WaitForSelectorOptions() { Hidden = true });112 _ = await tphotoFrame.WaitForSelectorAsync("#desc_all");113 await Delay();114 OnMessage("填写随机文本");115 await tphotoFrame.TypeAsync("#desc_all", MainViewModel.RandomText);116 await Delay();117 await (await tphotoFrame.WaitForSelectorAsync("#back_btn_md")).ClickAsync();118 _ = await tphotoFrame.WaitForNavigationAsync();119 }120 private Task Delay()121 {122 var sec = (int)MainViewModel.DelaySec;123 var ms = sec * 1000;124 OnMessage($"延时{sec}s");125 return Task.Delay(ms);126 }127 }128}...

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Clean163Email.cs

Source:Clean163Email.cs Github

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...19 {20 var frame = page.Frames.First(s=>s.Name.Contains("x-URS-iframe"));21 22 /​/​等待手工操作23 var user = await frame.WaitForSelectorAsync("input[data-placeholder='邮箱帐号或手机号码']");24 await user.TypeAsync("");25 var password = await frame.WaitForSelectorAsync("input[data-placeholder='输入密码']");26 await password.TypeAsync("");27 await frame.ClickAsync("#dologin");28 var element = await page.WaitForXPathAsync("/​/​*[a='清理邮箱']");29 var cleanBtn = await element.XPathAsync("a[1]");30 await cleanBtn[0].ClickAsync();31 await Task.Delay(3000);32 var frame2 = page.Frames.First(s => s.Name.Contains("frmoutlink"));33 34 await frame2.ClickAsync("#clearTypeDate");35 36 await frame2.ClickAsync("#dateCleanCustom");37 38 await frame2.TypeAsync("#customYearStartIpt", "1990");39 await frame2.TypeAsync("#customMonthStartIpt", "1");...

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PuppeteerExtensions.cs

Source:PuppeteerExtensions.cs Github

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...8 {9 ElementHandle element = null;10 try11 {12 element = await frame.WaitForSelectorAsync(cssSelector, new WaitForSelectorOptions13 {14 Timeout = 100015 });16 }17 catch (System.Exception)18 {19 return null;20 }21 return await frame.GetInnerText(element);22 }23 public static async Task<string> GetInnerText(this Frame frame, ElementHandle handle)24 {25 return await frame.EvaluateFunctionAsync<string>("el => el.textContent", handle);26 }...

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WaitForSelectorOptions.cs

Source:WaitForSelectorOptions.cs Github

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2{3 /​/​/​ <summary>4 /​/​/​ Optional waiting parameters.5 /​/​/​ </​summary>6 /​/​/​ <seealso cref="Page.WaitForSelectorAsync(string, WaitForSelectorOptions)"/​>7 /​/​/​ <seealso cref="Frame.WaitForSelectorAsync(string, WaitForSelectorOptions)"/​>8 public class WaitForSelectorOptions9 {10 /​/​/​ <summary>11 /​/​/​ Maximum time to wait for in milliseconds. Defaults to `30000` (30 seconds). 12 /​/​/​ Pass `0` to disable timeout. 13 /​/​/​ The default value can be changed by using <seealso cref="Page.DefaultTimeout"/​> method14 /​/​/​ </​summary>15 public int? Timeout { get; set; }16 /​/​/​ <summary>17 /​/​/​ Wait for element to be present in DOM and to be visible.18 /​/​/​ </​summary>19 public bool Visible { get; set; }20 /​/​/​ <summary>21 /​/​/​ Wait for element to not be found in the DOM or to be hidden....

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WaitForSelectorAsync

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1using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))2{3 var page = await browser.NewPageAsync();4 await page.WaitForSelectorAsync("input[name='q']");5 await page.TypeAsync("input[name='q']", "PuppeteerSharp");6 await page.ClickAsync("input[name='btnK']");7 await page.WaitForNavigationAsync();8 Console.WriteLine(await page.GetContentAsync());9}10using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))11{12 var page = await browser.NewPageAsync();13 await page.EvaluateExpressionAsync("() => console.log(`url is ${location.href}`)");14}15using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))16{17 var page = await browser.NewPageAsync();18 await page.ScreenshotAsync("screenshot.png");19}20using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))21{22 var page = await browser.NewPageAsync();23 var title = await page.GetTitleAsync();24 Console.WriteLine(title);25}26using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))27{28 var page = await browser.NewPageAsync();29 var content = await page.GetContentAsync();30 Console.WriteLine(content);31}32using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))33{34 var page = await browser.NewPageAsync();35 var cookies = await page.GetCookiesAsync();36 foreach (var cookie in cookies)37 {38 Console.WriteLine(cookie);39 }40}

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WaitForSelectorAsync

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1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5 {6 static async Task Main(string[] args)7 {8 await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);9 var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false });10 var page = await browser.NewPageAsync();11 await page.WaitForSelectorAsync("input[name=q]");12 await page.TypeAsync("input[name=q]", "PuppeteerSharp");13 await page.ClickAsync("input[name=btnK]");14 await page.WaitForNavigationAsync();15 await page.ScreenshotAsync("screenshot.png");16 await browser.CloseAsync();17 }18 }19}

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WaitForSelectorAsync

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1var browser = await Puppeteer.LaunchAsync(new LaunchOptions2{3 Args = new string[] { "--no-sandbox" }4});5var page = await browser.NewPageAsync();6await page.GoToAsync(url);7await page.WaitForSelectorAsync(".gb_P");8var browser = await Puppeteer.LaunchAsync(new LaunchOptions9{10 Args = new string[] { "--no-sandbox" }11});12var page = await browser.NewPageAsync();13await page.GoToAsync(url);14await page.WaitForSelectorAsync(".gb_P");15var browser = await Puppeteer.LaunchAsync(new LaunchOptions16{17 Args = new string[] { "--no-sandbox" }18});19var page = await browser.NewPageAsync();20await page.GoToAsync(url);21await page.MainFrame.WaitForSelectorAsync(".gb_P");22var browser = await Puppeteer.LaunchAsync(new LaunchOptions23{24 Args = new string[] { "--no-sandbox" }25});26var page = await browser.NewPageAsync();27await page.GoToAsync(url);28await page.MainFrame.WaitForSelectorAsync(".gb_P");

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WaitForSelectorAsync

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1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5 {6 static void Main(string[] args)7 {8 var task = MainAsync();9 task.Wait();10 }11 static async Task MainAsync()12 {13 {14 };15 var browser = await Puppeteer.LaunchAsync(options);16 var page = await browser.NewPageAsync();17 var selector = await page.WaitForSelectorAsync("input[name='q']", new WaitForSelectorOptions { Timeout = 10000 });18 await selector.TypeAsync("Puppeteer");19 await selector.PressAsync("Enter");20 var selector2 = await page.WaitForSelectorAsync("h3", new WaitForSelectorOptions { Timeout = 10000 });21 await selector2.ClickAsync();22 await selector3.ClickAsync();23 await Task.Delay(5000);24 await browser.CloseAsync();25 }26 }27}

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WaitForSelectorAsync

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1var page = await browser.NewPageAsync();2var searchBox = await page.WaitForSelectorAsync("input[title='Search']");3await searchBox.TypeAsync("PuppeteerSharp");4await page.Keyboard.PressAsync("Enter");5await page.ScreenshotAsync("result.png");6var page = await browser.NewPageAsync();7await searchBox.TypeAsync("PuppeteerSharp");8await page.Keyboard.PressAsync("Enter");9await page.ScreenshotAsync("result.png");10var page = await browser.NewPageAsync();11await page.WaitForFunctionAsync("document.querySelector('input[title=\"Search\"]').value == 'PuppeteerSharp'");12var searchBox = await page.QuerySelectorAsync("input[title='Search']");13await searchBox.TypeAsync("PuppeteerSharp");14await page.Keyboard.PressAsync("Enter");15await page.ScreenshotAsync("result.png");16var page = await browser.NewPageAsync();17await page.WaitForTimeoutAsync(1000);18var searchBox = await page.QuerySelectorAsync("input[title='Search']");19await searchBox.TypeAsync("PuppeteerSharp");20await page.Keyboard.PressAsync("Enter");21await page.ScreenshotAsync("result.png");22var page = await browser.NewPageAsync();23var searchBox = await page.QuerySelectorAsync("input[title='Search']");24await searchBox.TypeAsync("PuppeteerSharp");

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WaitForSelectorAsync

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1using PuppeteerSharp;2{3 static void Main(string[] args)4 {5 WaitForSelectorAsync().Wait();6 }7 static async Task WaitForSelectorAsync()8 {9 var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false });10 var page = await browser.NewPageAsync();11 await page.WaitForSelectorAsync("input[name='q']");12 await browser.CloseAsync();13 }14}15using PuppeteerSharp;16{17 static void Main(string[] args)18 {19 WaitForSelectorAsync().Wait();20 }21 static async Task WaitForSelectorAsync()22 {23 var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false });24 var page = await browser.NewPageAsync();25 await page.WaitForSelectorAsync("input[name='q']", new WaitForSelectorOptions { Visible = true });26 await browser.CloseAsync();27 }28}29using PuppeteerSharp;30{31 static void Main(string[] args)32 {33 WaitForSelectorAsync().Wait();34 }35 static async Task WaitForSelectorAsync()36 {37 var browser = await Puppeteer.LaunchAsync(new LaunchOptions {

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WaitForSelectorAsync

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1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5 {6 static async Task Main(string[] args)7 {8 await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);9 using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions10 {11 Args = new string[] { "--no-sandbox" }12 }))13 {14 using (var page = await browser.NewPageAsync())15 {16 var element = await page.WaitForSelectorAsync("#tsf > div:nth-child(2) > div > div.RNNXgb > div > div.a4bIc > input");17 var result = await element.ClickAsync();18 Console.WriteLine(result);19 }20 }21 }22 }23}24using System;25using System.Threading.Tasks;26using PuppeteerSharp;27{28 {29 static async Task Main(string[] args)30 {31 await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);32 using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions33 {34 Args = new string[] { "--no-sandbox" }35 }))36 {37 using (var page = await browser.NewPageAsync())38 {

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