How to use QuerySelectorAsync method of Microsoft.Playwright.Core.Frame class

Best Playwright-dotnet code snippet using Microsoft.Playwright.Core.Frame.QuerySelectorAsync

Page.cs

Source:Page.cs

...366        public Task<T> EvalOnSelectorAsync<T>(string selector, string expression, object arg = null, PageEvalOnSelectorOptions options = null)367            => MainFrame.EvalOnSelectorAsync<T>(selector, expression, arg, new() { Strict = options?.Strict });368        public ILocator Locator(string selector, PageLocatorOptions options = default)369            => MainFrame.Locator(selector, new() { HasTextString = options?.HasTextString, HasTextRegex = options?.HasTextRegex, Has = options?.Has });370        public Task<IElementHandle> QuerySelectorAsync(string selector, PageQuerySelectorOptions options = null)371            => MainFrame.QuerySelectorAsync(selector, new() { Strict = options?.Strict });372        public Task<T> EvalOnSelectorAsync<T>(string selector, string expression, object arg) => MainFrame.EvalOnSelectorAsync<T>(selector, expression, arg);373        public Task<JsonElement?> EvalOnSelectorAllAsync(string selector, string expression, object arg) => MainFrame.EvalOnSelectorAllAsync(selector, expression, arg);374        public Task<T> EvalOnSelectorAllAsync<T>(string selector, string expression, object arg) => MainFrame.EvalOnSelectorAllAsync<T>(selector, expression, arg);375        public Task FillAsync(string selector, string value, PageFillOptions options = default)376            => MainFrame.FillAsync(selector, value, new() { NoWaitAfter = options?.NoWaitAfter, Timeout = options?.Timeout, Force = options?.Force, Strict = options?.Strict });377        public Task SetInputFilesAsync(string selector, string files, PageSetInputFilesOptions options = default)378            => MainFrame.SetInputFilesAsync(selector, files, Map(options));379        public Task SetInputFilesAsync(string selector, IEnumerable<string> files, PageSetInputFilesOptions options = default)380            => MainFrame.SetInputFilesAsync(selector, files, Map(options));381        public Task SetInputFilesAsync(string selector, FilePayload files, PageSetInputFilesOptions options = default)382            => MainFrame.SetInputFilesAsync(selector, files, Map(options));383        public Task SetInputFilesAsync(string selector, IEnumerable<FilePayload> files, PageSetInputFilesOptions options = default)384            => MainFrame.SetInputFilesAsync(selector, files, Map(options));385        public Task TypeAsync(string selector, string text, PageTypeOptions options = default)386            => MainFrame.TypeAsync(selector, text, new()387            {388                Delay = options?.Delay,389                NoWaitAfter = options?.NoWaitAfter,390                Timeout = options?.Timeout,391                Strict = options?.Strict,392            });393        public Task FocusAsync(string selector, PageFocusOptions options = default)394            => MainFrame.FocusAsync(selector, new()395            {396                Timeout = options?.Timeout,397                Strict = options?.Strict,398            });399        public Task HoverAsync(string selector, PageHoverOptions options = default)400            => MainFrame.HoverAsync(401                selector,402                new()403                {404                    Position = options?.Position,405                    Modifiers = options?.Modifiers,406                    Force = options?.Force,407                    Timeout = options?.Timeout,408                    Trial = options?.Trial,409                    Strict = options?.Strict,410                });411        public Task PressAsync(string selector, string key, PagePressOptions options = default)412            => MainFrame.PressAsync(selector, key, new()413            {414                Delay = options?.Delay,415                NoWaitAfter = options?.NoWaitAfter,416                Timeout = options?.Timeout,417                Strict = options?.Strict,418            });419        public Task<IReadOnlyList<string>> SelectOptionAsync(string selector, string values, PageSelectOptionOptions options = default)420            => SelectOptionAsync(selector, new[] { values }, options);421        public Task<IReadOnlyList<string>> SelectOptionAsync(string selector, IEnumerable<string> values, PageSelectOptionOptions options = default)422            => SelectOptionAsync(selector, values.Select(x => new SelectOptionValue() { Value = x }), options);423        public Task<IReadOnlyList<string>> SelectOptionAsync(string selector, IElementHandle values, PageSelectOptionOptions options = default)424            => SelectOptionAsync(selector, new[] { values }, options);425        public Task<IReadOnlyList<string>> SelectOptionAsync(string selector, IEnumerable<IElementHandle> values, PageSelectOptionOptions options = default)426            => MainFrame.SelectOptionAsync(selector, values, new()427            {428                NoWaitAfter = options?.NoWaitAfter,429                Timeout = options?.Timeout,430                Force = options?.Force,431                Strict = options?.Strict,432            });433        public Task<IReadOnlyList<string>> SelectOptionAsync(string selector, SelectOptionValue values, PageSelectOptionOptions options = default)434            => SelectOptionAsync(selector, new[] { values }, options);435        public Task<IReadOnlyList<string>> SelectOptionAsync(string selector, IEnumerable<SelectOptionValue> values, PageSelectOptionOptions options = default)436            => MainFrame.SelectOptionAsync(selector, values, new()437            {438                NoWaitAfter = options?.NoWaitAfter,439                Timeout = options?.Timeout,440                Force = options?.Force,441                Strict = options?.Strict,442            });443        public Task WaitForTimeoutAsync(float timeout) => MainFrame.WaitForTimeoutAsync(timeout);444        public Task<IElementHandle> WaitForSelectorAsync(string selector, PageWaitForSelectorOptions options = default)445            => MainFrame.WaitForSelectorAsync(selector, new()446            {447                State = options?.State,448                Timeout = options?.Timeout,449                Strict = options?.Strict,450            });451        public Task<JsonElement?> EvaluateAsync(string expression, object arg) => MainFrame.EvaluateAsync(expression, arg);452        public async Task<byte[]> ScreenshotAsync(PageScreenshotOptions options = default)453        {454            options ??= new PageScreenshotOptions();455            if (options.Type == null && !string.IsNullOrEmpty(options.Path))456            {457                options.Type = ElementHandle.DetermineScreenshotType(options.Path);458            }459            byte[] result = await _channel.ScreenshotAsync(460                path: options.Path,461                fullPage: options.FullPage,462                clip: options.Clip,463                omitBackground: options.OmitBackground,464                type: options.Type,465                quality: options.Quality,466                mask: options.Mask,467                animations: options.Animations,468                caret: options.Caret,469                scale: options.Scale,470                timeout: options.Timeout).ConfigureAwait(false);471            if (!string.IsNullOrEmpty(options.Path))472            {473                Directory.CreateDirectory(new FileInfo(options.Path).Directory.FullName);474                File.WriteAllBytes(options.Path, result);475            }476            return result;477        }478        public Task SetContentAsync(string html, PageSetContentOptions options = default)479            => MainFrame.SetContentAsync(html, new() { WaitUntil = options?.WaitUntil, Timeout = options?.Timeout });480        public Task<string> ContentAsync() => MainFrame.ContentAsync();481        public Task SetExtraHTTPHeadersAsync(IEnumerable<KeyValuePair<string, string>> headers)482            => _channel.SetExtraHTTPHeadersAsync(headers);483        public Task<IElementHandle> QuerySelectorAsync(string selector) => MainFrame.QuerySelectorAsync(selector);484        public Task<IReadOnlyList<IElementHandle>> QuerySelectorAllAsync(string selector)485            => MainFrame.QuerySelectorAllAsync(selector);486        public Task<IJSHandle> EvaluateHandleAsync(string expression, object arg) => MainFrame.EvaluateHandleAsync(expression, arg);487        public Task<IElementHandle> AddScriptTagAsync(PageAddScriptTagOptions options = default)488            => MainFrame.AddScriptTagAsync(new()489            {490                Url = options?.Url,491                Path = options?.Path,492                Content = options?.Content,493                Type = options?.Type,494            });495        public Task<IElementHandle> AddStyleTagAsync(PageAddStyleTagOptions options = default)496            => MainFrame.AddStyleTagAsync(new()497            {...

Frame.cs

Source:Frame.cs

...381        public Task SetContentAsync(string html, FrameSetContentOptions options = default)382            => _channel.SetContentAsync(html, timeout: options?.Timeout, waitUntil: options?.WaitUntil);383        public Task<string> InputValueAsync(string selector, FrameInputValueOptions options = null)384            => _channel.InputValueAsync(selector, options?.Timeout, options?.Strict);385        public async Task<IElementHandle> QuerySelectorAsync(string selector)386            => (await _channel.QuerySelectorAsync(selector).ConfigureAwait(false))?.Object;387        public async Task<IReadOnlyList<IElementHandle>> QuerySelectorAllAsync(string selector)388            => (await _channel.QuerySelectorAllAsync(selector).ConfigureAwait(false)).Select(c => ((ElementHandleChannel)c).Object).ToList().AsReadOnly();389        public async Task<IJSHandle> WaitForFunctionAsync(string expression, object arg = default, FrameWaitForFunctionOptions options = default)390             => (await _channel.WaitForFunctionAsync(391                expression: expression,392                arg: ScriptsHelper.SerializedArgument(arg),393                timeout: options?.Timeout,394                polling: options?.PollingInterval).ConfigureAwait(false)).Object;395        public async Task<IElementHandle> WaitForSelectorAsync(string selector, FrameWaitForSelectorOptions options = default)396            => (await _channel.WaitForSelectorAsync(397                selector: selector,398                state: options?.State,399                timeout: options?.Timeout,400                strict: options?.Strict,401                omitReturnValue: false).ConfigureAwait(false))?.Object;402        public async Task<IElementHandle> LocatorWaitForAsync(string selector, LocatorWaitForOptions options = default)403            => (await _channel.WaitForSelectorAsync(404                selector: selector,405                state: options?.State,406                timeout: options?.Timeout,407                strict: true,408                omitReturnValue: true).ConfigureAwait(false))?.Object;409        public async Task<IJSHandle> EvaluateHandleAsync(string script, object args = null)410            => (await _channel.EvaluateExpressionHandleAsync(411                script,412                arg: ScriptsHelper.SerializedArgument(args)).ConfigureAwait(false))?.Object;413        public async Task<JsonElement?> EvaluateAsync(string script, object arg = null)414            => ScriptsHelper.ParseEvaluateResult<JsonElement?>(await _channel.EvaluateExpressionAsync(415                script,416                arg: ScriptsHelper.SerializedArgument(arg)).ConfigureAwait(false));417        public async Task<T> EvaluateAsync<T>(string script, object arg = null)418            => ScriptsHelper.ParseEvaluateResult<T>(await _channel.EvaluateExpressionAsync(419                script,420                arg: ScriptsHelper.SerializedArgument(arg)).ConfigureAwait(false));421        public async Task<JsonElement?> EvalOnSelectorAsync(string selector, string script, object arg = null)422            => ScriptsHelper.ParseEvaluateResult<JsonElement?>(await _channel.EvalOnSelectorAsync(423                selector: selector,424                script,425                arg: ScriptsHelper.SerializedArgument(arg),426                strict: null).ConfigureAwait(false));427        public async Task<T> EvalOnSelectorAsync<T>(string selector, string script, object arg = null)428            => ScriptsHelper.ParseEvaluateResult<T>(await _channel.EvalOnSelectorAsync(429                selector: selector,430                script,431                arg: ScriptsHelper.SerializedArgument(arg),432                strict: null).ConfigureAwait(false));433        public async Task<T> EvalOnSelectorAsync<T>(string selector, string expression, object arg = null, FrameEvalOnSelectorOptions options = null)434            => ScriptsHelper.ParseEvaluateResult<T>(await _channel.EvalOnSelectorAsync(435                selector: selector,436                expression,437                arg: ScriptsHelper.SerializedArgument(arg),438                strict: options?.Strict).ConfigureAwait(false));439        public async Task<JsonElement?> EvalOnSelectorAllAsync(string selector, string script, object arg = null)440            => ScriptsHelper.ParseEvaluateResult<JsonElement?>(await _channel.EvalOnSelectorAllAsync(441                selector: selector,442                script,443                arg: ScriptsHelper.SerializedArgument(arg)).ConfigureAwait(false));444        public async Task<T> EvalOnSelectorAllAsync<T>(string selector, string script, object arg = null)445            => ScriptsHelper.ParseEvaluateResult<T>(await _channel.EvalOnSelectorAllAsync(446                selector: selector,447                script,448                arg: ScriptsHelper.SerializedArgument(arg)).ConfigureAwait(false));449        public ILocator Locator(string selector, FrameLocatorOptions options = null) => new Locator(this, selector, new() { HasTextRegex = options?.HasTextRegex, HasTextString = options?.HasTextString, Has = options?.Has });450        public async Task<IElementHandle> QuerySelectorAsync(string selector, FrameQuerySelectorOptions options = null)451            => (await _channel.QuerySelectorAsync(selector, options?.Strict).ConfigureAwait(false))?.Object;452        public async Task<IResponse> GotoAsync(string url, FrameGotoOptions options = default)453            => (await _channel.GotoAsync(454                url,455                timeout: options?.Timeout,456                waitUntil: options?.WaitUntil,457                referer: options?.Referer).ConfigureAwait(false))?.Object;458        public Task<bool> IsCheckedAsync(string selector, FrameIsCheckedOptions options = default)459            => _channel.IsCheckedAsync(selector, timeout: options?.Timeout, options?.Strict);460        public Task<bool> IsDisabledAsync(string selector, FrameIsDisabledOptions options = default)461            => _channel.IsDisabledAsync(selector, timeout: options?.Timeout, options?.Strict);462        public Task<bool> IsEditableAsync(string selector, FrameIsEditableOptions options = default)463            => _channel.IsEditableAsync(selector, timeout: options?.Timeout, options?.Strict);464        public Task<bool> IsEnabledAsync(string selector, FrameIsEnabledOptions options = default)465            => _channel.IsEnabledAsync(selector, timeout: options?.Timeout, options?.Strict);...

FrameChannel.cs

Source:FrameChannel.cs

...57                        serverParams?.ToObject<FrameChannelLoadStateEventArgs>(Connection.DefaultJsonSerializerOptions));58                    break;59            }60        }61        internal Task<ElementHandleChannel> QuerySelectorAsync(string selector, bool? strict)62        {63            var args = new Dictionary<string, object>64            {65                ["selector"] = selector,66                ["strict"] = strict,67            };68            return Connection.SendMessageToServerAsync<ElementHandleChannel>(Guid, "querySelector", args);69        }70        internal Task<ResponseChannel> GotoAsync(string url, float? timeout, WaitUntilState? waitUntil, string referer)71        {72            var args = new Dictionary<string, object>73            {74                ["url"] = url,75                ["timeout"] = timeout,76                ["waitUntil"] = waitUntil,77                ["referer"] = referer,78            };79            return Connection.SendMessageToServerAsync<ResponseChannel>(Guid, "goto", args);80        }81        internal Task<JSHandleChannel> EvaluateExpressionHandleAsync(82            string script,83            object arg)84        {85            return Connection.SendMessageToServerAsync<JSHandleChannel>(86                Guid,87                "evaluateExpressionHandle",88                new Dictionary<string, object>89                {90                    ["expression"] = script,91                    ["arg"] = arg,92                });93        }94        internal Task<JSHandleChannel> WaitForFunctionAsync(95            string expression,96            object arg,97            float? timeout,98            float? polling)99        {100            var args = new Dictionary<string, object>101            {102                ["expression"] = expression,103                ["arg"] = arg,104                ["timeout"] = timeout,105                ["pollingInterval"] = polling,106            };107            return Connection.SendMessageToServerAsync<JSHandleChannel>(108                Guid,109                "waitForFunction",110                args);111        }112        internal Task<JsonElement?> EvaluateExpressionAsync(113            string script,114            object arg)115        {116            return Connection.SendMessageToServerAsync<JsonElement?>(117                Guid,118                "evaluateExpression",119                new Dictionary<string, object>120                {121                    ["expression"] = script,122                    ["arg"] = arg,123                });124        }125        internal Task<JsonElement?> EvalOnSelectorAsync(string selector, string script, object arg, bool? strict)126            => Connection.SendMessageToServerAsync<JsonElement?>(127                Guid,128                "evalOnSelector",129                new Dictionary<string, object>130                {131                    ["selector"] = selector,132                    ["expression"] = script,133                    ["arg"] = arg,134                    ["strict"] = strict,135                });136        internal Task<JsonElement?> EvalOnSelectorAllAsync(string selector, string script, object arg)137            => Connection.SendMessageToServerAsync<JsonElement?>(138                Guid,139                "evalOnSelectorAll",140                new Dictionary<string, object>141                {142                    ["selector"] = selector,143                    ["expression"] = script,144                    ["arg"] = arg,145                });146        internal Task<ElementHandleChannel> FrameElementAsync() => Connection.SendMessageToServerAsync<ElementHandleChannel>(Guid, "frameElement", null);147        internal async Task<string> TitleAsync()148            => (await Connection.SendMessageToServerAsync(Guid, "title", null).ConfigureAwait(false))?.GetProperty("value").ToString();149        internal Task<ElementHandleChannel> WaitForSelectorAsync(string selector, WaitForSelectorState? state, float? timeout, bool? strict, bool? omitReturnValue)150        {151            var args = new Dictionary<string, object>152            {153                ["selector"] = selector,154                ["timeout"] = timeout,155                ["state"] = state,156                ["strict"] = strict,157                ["omitReturnValue"] = omitReturnValue,158            };159            return Connection.SendMessageToServerAsync<ElementHandleChannel>(160                Guid,161                "waitForSelector",162                args);163        }164        internal Task WaitForTimeoutAsync(float timeout)165        {166            var args = new Dictionary<string, object>167            {168                ["timeout"] = timeout,169            };170            return Connection.SendMessageToServerAsync<ElementHandleChannel>(171                Guid,172                "waitForTimeout",173                args);174        }175        internal Task<ElementHandleChannel> AddScriptTagAsync(string url, string path, string content, string type)176        {177            var args = new Dictionary<string, object>178            {179                ["url"] = url,180                ["path"] = path,181                ["content"] = content,182                ["type"] = type,183            };184            return Connection.SendMessageToServerAsync<ElementHandleChannel>(Guid, "addScriptTag", args);185        }186        internal Task<ElementHandleChannel> AddStyleTagAsync(string url, string path, string content)187        {188            var args = new Dictionary<string, object>189            {190                ["url"] = url,191                ["path"] = path,192                ["content"] = content,193            };194            return Connection.SendMessageToServerAsync<ElementHandleChannel>(Guid, "addStyleTag", args);195        }196        internal Task<ResponseChannel> WaitForNavigationAsync(LoadState? waitUntil, string url, float? timeout)197        {198            var param = new Dictionary<string, object>199            {200                ["timeout"] = timeout,201                ["url"] = url,202                ["waitUntil"] = waitUntil,203            };204            return Connection.SendMessageToServerAsync<ResponseChannel>(Guid, "waitForNavigation", param);205        }206        internal Task WaitForLoadStateAsync(LoadState? state, float? timeout)207        {208            var param = new Dictionary<string, object>209            {210                ["timeout"] = timeout,211                ["state"] = state,212            };213            return Connection.SendMessageToServerAsync(214                Guid,215                "waitForLoadState",216                param);217        }218        internal async Task<int> QueryCountAsync(string selector)219        {220            var args = new Dictionary<string, object>221            {222                ["selector"] = selector,223            };224            var result = await Connection.SendMessageToServerAsync(Guid, "queryCount", args).ConfigureAwait(false);225            return result.Value.GetProperty("value").GetInt32();226        }227        internal Task SetContentAsync(string html, float? timeout, WaitUntilState? waitUntil)228        {229            var args = new Dictionary<string, object>230            {231                ["html"] = html,232                ["waitUntil"] = waitUntil,233                ["timeout"] = timeout,234            };235            return Connection.SendMessageToServerAsync(Guid, "setContent", args);236        }237        internal Task ClickAsync(238            string selector,239            float? delay,240            MouseButton? button,241            int? clickCount,242            IEnumerable<KeyboardModifier> modifiers,243            Position position,244            float? timeout,245            bool? force,246            bool? noWaitAfter,247            bool? trial,248            bool? strict)249        {250            var args = new Dictionary<string, object>251            {252                ["selector"] = selector,253                ["button"] = button,254                ["force"] = force,255                ["delay"] = delay,256                ["clickCount"] = clickCount,257                ["modifiers"] = modifiers?.Select(m => m.ToValueString()),258                ["position"] = position,259                ["noWaitAfter"] = noWaitAfter,260                ["trial"] = trial,261                ["timeout"] = timeout,262                ["strict"] = strict,263            };264            return Connection.SendMessageToServerAsync<ElementHandleChannel>(Guid, "click", args);265        }266        internal Task DblClickAsync(267            string selector,268            float? delay,269            MouseButton? button,270            Position position,271            IEnumerable<KeyboardModifier> modifiers,272            float? timeout,273            bool? force,274            bool? noWaitAfter,275            bool? trial,276            bool? strict)277        {278            var args = new Dictionary<string, object>279            {280                ["selector"] = selector,281                ["button"] = button,282                ["delay"] = delay,283                ["force"] = force,284                ["modifiers"] = modifiers?.Select(m => m.ToValueString()),285                ["position"] = position,286                ["trial"] = trial,287                ["timeout"] = timeout,288                ["noWaitAfter"] = noWaitAfter,289                ["strict"] = strict,290            };291            return Connection.SendMessageToServerAsync<ElementHandleChannel>(Guid, "dblclick", args);292        }293        internal Task<ElementHandleChannel> QuerySelectorAsync(string selector)294            => Connection.SendMessageToServerAsync<ElementHandleChannel>(295                Guid,296                "querySelector",297                new Dictionary<string, object>298                {299                    ["selector"] = selector,300                });301        internal Task<ChannelBase[]> QuerySelectorAllAsync(string selector)302            => Connection.SendMessageToServerAsync<ChannelBase[]>(303                Guid,304                "querySelectorAll",305                new Dictionary<string, object>306                {307                    ["selector"] = selector,...

PlaygroundTests.cs

Source:PlaygroundTests.cs

...280            using var playwright = await Playwright.CreateAsync();281            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions { Headless = true });282            var page = await browser.NewPageAsync();283            await page.GotoAsync("https://play.tailwindcss.com/");284            var iframe = await page.QuerySelectorAsync("iframe");285            var expected = await (await iframe!.ContentFrameAsync())!.ContentAsync();286            var diffs = DiffBuilder287                .Compare(expected)288                .WithTest(actual)289                .Build()290                .ToList();291            diffs.Should().BeEmpty();292        }293        [Test]294        public async Task statiq_web_examples()295        {296            // https://github.com/statiqdev/Statiq.Web297            // cd /examples/Statiq.Web.Examples298            // dotnet run -- preview...

ProcessService.cs

Source:ProcessService.cs

...79            var page = await browser.NewPageAsync();80            81            await page.GotoAsync(searchUrl);82            // get result count for validation83            IElementHandle resultEls = await page.QuerySelectorAsync(".search-form__count");84            int resultsCount = 0;85            int pages = resultEls != null86                ? int.TryParse(ResultCountRegex.Match(await resultEls.InnerTextAsync()).Groups["ResultCount"].Value, out resultsCount)87                    ? (int)Math.Ceiling((decimal)resultsCount / 10)88                    : 189                : 1;90            var results = new Results {Expected = resultsCount};91            92            _logger?.LogInformation("Expecting {ResultsCount} results", resultsCount);93            // iterate pages of adverts94            for (var i = 1; i <= pages; i++)95            {96                _logger?.LogInformation("Processing page {Page}", i);97                98                // if this isn't the first page then append the page number and navigate99                if (i > 1)100                {101                    var navPage = searchUrl.SetQueryParam("page", i);102                    103                    results.Pages.Add(navPage);104                    105                    await page.GotoAsync(navPage);106                }107                else108                    results.Pages.Add(searchUrl);109                // get adverts on page110                var ads = await page.QuerySelectorAllAsync("article.product-card[data-standout-type=''] > a");111                112                // iterate all adverts113                foreach (var ad in ads)114                {115                    // build a car object116                    var car = new Car(await ad.GetAttributeAsync("href"));117                    118                    _logger?.LogInformation("Processing ad {Url}", car.Url);119                    120                    // open the advert in a new browser page121                    IPage adPage = await browser.NewPageAsync();122                    await adPage.GotoAsync(car.Url.AsFullUrl(_searchSettings.Domain));123                    124                    // wait 1 second to try and improve image quality of snapshot125                    Thread.Sleep(1000);126                    127                    // snapshot entire ad128                    var adSelector = ":is(main > div > div:nth-child(2), main > article > div:nth-child(2), main > div > div)";129                    130                    if (await ElementExists(adSelector, adPage, "ad image", false))131                    {132                        IElementHandle image = await adPage.QuerySelectorAsync(adSelector);133                        134                        if (image == null)135                            _logger?.LogError("Failed to retrieve ad image after successfully finding the ad image element");136                        else137                        {138                            var imageDir = Path.Combine(searchDirectory, "images");139                            car.AdImage = $"{car.Id}_ad.png";140                            var fullSizePath = Path.Combine(imageDir, $"{car.Id}_ad_full.png");141                            142                            await image.ScreenshotAsync(new ElementHandleScreenshotOptions { Path = fullSizePath });143                            await using var input = File.OpenRead(fullSizePath);144                            using var img = await Image.LoadAsync(input);145                            img.Mutate(r => r.Resize(new ResizeOptions146                            {147                                Size = new Size(img.Width, img.Width),148                                Mode = ResizeMode.Crop,149                                Position = AnchorPositionMode.Top150                            }));151                            152                            await img.SaveAsync(Path.Combine(imageDir, car.AdImage));153                        }154                    }155                    #region attempts to get more granular data, not required when snapshotting entire ad156                    // snapshot image157                    // var imgSelector = ":is(.gallery__container, section[data-gui='gallery-section'])";158                    //159                    // if (await ElementExists(imgSelector, adPage, "image", false))160                    // {161                    //     IElementHandle image = await page.QuerySelectorAsync(imgSelector);162                    //     163                    //     if (image == null)164                    //         _logger.LogError("Failed to retrieve image after successfully finding the image element");165                    //     else166                    //     {167                    //         car.Image = $"{car.Id}.png";168                    //         169                    //         await image.ScreenshotAsync(new ElementHandleScreenshotOptions { Path = Path.Combine(_imageDir, car.Image) });170                    //     }171                    // }172                    // get price173                    // var priceSelector = "text=/Â£\\d{2},\\d{3}/i";174                    //175                    // if (await ElementExists(priceSelector, adPage, "price", false))176                    // {177                    //     IElementHandle price = await adPage.QuerySelectorAsync(priceSelector);178                    //     179                    //     if (price == null)180                    //         _logger.LogError("Failed to retrieve price after successfully finding the price element");181                    //     else182                    //         car.Price = PriceRegex.Match(await price.InnerHTMLAsync()).Groups["Price"].Value;183                    // }184                    // get mileage185                    // var mileageSelector = "text=/\\d+,\\d+ miles/i";186                    //187                    // if (await ElementExists(mileageSelector, adPage, "mileage", false))188                    // {189                    //     IElementHandle mileage = await adPage.QuerySelectorAsync(mileageSelector);190                    //     191                    //     if (mileage == null)192                    //         _logger.LogError("Failed to retrieve mileage after successfully finding the mileage element");193                    //     else194                    //         car.Mileage = await mileage.InnerTextAsync();195                    // }196                    #endregion197                    bool locationLinkFound = false;198                    // try to find a location link199                    try200                    {201                        var locBtnSelector = ":is(button[data-gui-test='dealerLocationLink'], button.seller-location__toggle)";202                        if (!await ElementExists(locBtnSelector, adPage, "location"))203                        {204                            results.Cars.Add(car);205                        206                            continue;207                        }208                        await adPage.ClickAsync(locBtnSelector);209                    210                        var mapFrameSelector = "iframe[src^='https://www.google.com/maps/embed']";211                        if (!await ElementExists(mapFrameSelector, adPage, "map frame", false))212                        {213                            results.Cars.Add(car);214                        215                            continue;216                        }217                    218                        Thread.Sleep(500);219                    220                        var mapFrameQuery = await adPage.QuerySelectorAsync(mapFrameSelector);221                        if (mapFrameQuery == null)222                        {223                            _logger?.LogError("Failed to find the map iframe after successfully finding the map frame element");224                    225                            results.Cars.Add(car);226                            await adPage.CloseAsync();227                            continue;228                        }229                    230                        var mapFrame = await mapFrameQuery.ContentFrameAsync();231                        if (mapFrame == null)232                        {233                            _logger?.LogError("Failed to select the map iframe element after successfully finding the map iframe element");234                    235                            results.Cars.Add(car);236                            await adPage.CloseAsync();237                            continue;238                        }239                    240                        var coordsSelector = "div.place-name";241                        if (await ElementExists(coordsSelector, mapFrame, "coordinates"))242                        {243                            IElementHandle coords = await mapFrame.QuerySelectorAsync(coordsSelector);244                        245                            if (coords == null)246                                _logger?.LogError("Failed to retrieve coordinates after successfully finding the coordinates element");247                            else248                                car.Coords = await coords.InnerTextAsync();249                        }250                    251                        var addressSelector = "div.address";252                        if (await ElementExists(coordsSelector, mapFrame, "address"))253                        {254                            IElementHandle address = await mapFrame.QuerySelectorAsync(addressSelector);255                            if (address == null)256                                _logger?.LogError("Failed to retrieve address after successfully finding the address element");257                            else258                                car.Location = await address.InnerTextAsync();259                        }260                        locationLinkFound = true;261                    }262                    catch (Exception e)263                    {264                        _logger?.LogWarning(e, "Failed to find a location link for advert");265                        locationLinkFound = false;266                    }267                    // todo - if a location link wasn't found, ust the approximate location from the summary screen268                    if (!locationLinkFound)...

ElementHandleChannel.cs

Source:ElementHandleChannel.cs

...62                Guid,63                "waitForSelector",64                args);65        }66        internal Task<ElementHandleChannel> QuerySelectorAsync(string selector)67            => Connection.SendMessageToServerAsync<ElementHandleChannel>(68                Guid,69                "querySelector",70                new Dictionary<string, object>71                {72                    ["selector"] = selector,73                });74        internal Task WaitForElementStateAsync(ElementState state, float? timeout)75        {76            var args = new Dictionary<string, object>77            {78                ["state"] = state,79                ["timeout"] = timeout,80            };...

ElementHandle.cs

Source:ElementHandle.cs

...148        {149            var converted = SetInputFilesHelpers.ConvertInputFiles(files);150            await _channel.SetInputFilesAsync(converted.Files, options?.NoWaitAfter, options?.Timeout).ConfigureAwait(false);151        }152        public async Task<IElementHandle> QuerySelectorAsync(string selector)153            => (await _channel.QuerySelectorAsync(selector).ConfigureAwait(false))?.Object;154        public async Task<IReadOnlyList<IElementHandle>> QuerySelectorAllAsync(string selector)155            => (await _channel.QuerySelectorAllAsync(selector).ConfigureAwait(false)).Select(e => ((ElementHandleChannel)e).Object).ToList().AsReadOnly();156        public async Task<JsonElement?> EvalOnSelectorAsync(string selector, string expression, object arg = null)157            => ScriptsHelper.ParseEvaluateResult<JsonElement?>(await _channel.EvalOnSelectorAsync(158                selector: selector,159                script: expression,160                arg: ScriptsHelper.SerializedArgument(arg)).ConfigureAwait(false));161        public async Task<T> EvalOnSelectorAsync<T>(string selector, string expression, object arg = null)162            => ScriptsHelper.ParseEvaluateResult<T>(await _channel.EvalOnSelectorAsync(163                selector: selector,164                script: expression,165                arg: ScriptsHelper.SerializedArgument(arg)).ConfigureAwait(false));166        public async Task<T> EvalOnSelectorAllAsync<T>(string selector, string expression, object arg = null)167            => ScriptsHelper.ParseEvaluateResult<T>(await _channel.EvalOnSelectorAllAsync(...

QuerySelectorAsync

Using AI Code Generation

1using Microsoft.Playwright;2using System.Threading.Tasks;3{4    static async Task Main(string[] args)5    {6        using var playwright = await Playwright.CreateAsync();7        await using var browser = await playwright.Chromium.LaunchAsync();8        var page = await browser.NewPageAsync();9        await page.QuerySelectorAsync("input");10    }11}12using Microsoft.Playwright;13using System.Threading.Tasks;14{15    static async Task Main(string[] args)16    {17        using var playwright = await Playwright.CreateAsync();18        await using var browser = await playwright.Chromium.LaunchAsync();19        var page = await browser.NewPageAsync();20        await page.QuerySelectorAllAsync("input");21    }22}23using Microsoft.Playwright;24using System.Threading.Tasks;25{26    static async Task Main(string[] args)27    {28        using var playwright = await Playwright.CreateAsync();29        await using var browser = await playwright.Chromium.LaunchAsync();30        var page = await browser.NewPageAsync();31        await page.WaitForSelectorAsync("input");32    }33}34using Microsoft.Playwright;35using System.Threading.Tasks;36{37    static async Task Main(string[] args)38    {39        using var playwright = await Playwright.CreateAsync();40        await using var browser = await playwright.Chromium.LaunchAsync();41        var page = await browser.NewPageAsync();42        await page.WaitForTimeoutAsync(1000);43    }44}45using Microsoft.Playwright;46using System.Threading.Tasks;47{48    static async Task Main(string[] args)49    {50        using var playwright = await Playwright.CreateAsync();51        await using var browser = await playwright.Chromium.LaunchAsync();52        var page = await browser.NewPageAsync();

QuerySelectorAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;4{5    {6        static async Task Main(string[] args)7        {8            using var playwright = await Playwright.CreateAsync();9            await using var browser = await playwright.Chromium.LaunchAsync(new()10            {11            });12            var page = await browser.NewPageAsync();13            var element = await page.QuerySelectorAsync("input[name='search']");14            await element.TypeAsync("Playwright");15            await element.PressAsync("Enter");16            await page.ScreenshotAsync("screenshot.png");17        }18    }19}20using System;21using System.Threading.Tasks;22using Microsoft.Playwright;23{24    {25        static async Task Main(string[] args)26        {27            using var playwright = await Playwright.CreateAsync();28            await using var browser = await playwright.Chromium.LaunchAsync(new()29            {30            });31            var page = await browser.NewPageAsync();32            var elements = await page.QuerySelectorAllAsync("a");33            Console.WriteLine(elements.Count);34        }35    }36}37using System;38using System.Threading.Tasks;39using Microsoft.Playwright;40{41    {42        static async Task Main(string[] args)43        {44            using var playwright = await Playwright.CreateAsync();45            await using var browser = await playwright.Chromium.LaunchAsync(new()46            {47            });48            var page = await browser.NewPageAsync();49            var element = await page.QuerySelectorAsync("input[name='search']");50            await element.TypeAsync("Playwright");51            await element.PressAsync("Enter");52            await page.ScreenshotAsync("screenshot.png");53        }54    }55}

QuerySelectorAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;4{5    {6        static async Task Main(string[] args)7        {8            using var playwright = await Playwright.CreateAsync();9            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions10            {11            });12            var context = await browser.NewContextAsync();13            var page = await context.NewPageAsync();14            var element = await page.QuerySelectorAsync("input[name='q']");15            await element.TypeAsync("Hello World");16            await page.PressAsync("input[name='q']", "Enter");17            Console.WriteLine("Press any key to close the browser");18            Console.ReadKey();19        }20    }21}22using System;23using System.Threading.Tasks;24using Microsoft.Playwright;25{26    {27        static async Task Main(string[] args)28        {29            using var playwright = await Playwright.CreateAsync();30            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions31            {32            });33            var context = await browser.NewContextAsync();34            var page = await context.NewPageAsync();35            var element = await page.QuerySelectorAsync("input[name='q']");36            await element.TypeAsync("Hello World");37            await page.PressAsync("input[name='q']", "Enter");38            Console.WriteLine("Press any key to close the browser");39            Console.ReadKey();40        }41    }42}

QuerySelectorAsync

Using AI Code Generation

1var playwright = await Playwright.CreateAsync();2var browser = await playwright.Chromium.LaunchAsync();3var context = await browser.NewContextAsync();4var page = await context.NewPageAsync();5await page.QuerySelectorAsync("input[name=q]");6await page.FillAsync("input[name=q]", "Playwright");7await page.Keyboard.PressAsync("Enter");8await page.WaitForNavigationAsync();9Console.WriteLine(page.Url);10await page.ScreenshotAsync("screenshot.png");11await browser.CloseAsync();12var playwright = await Playwright.CreateAsync();13var browser = await playwright.Chromium.LaunchAsync();14var context = await browser.NewContextAsync();15var page = await context.NewPageAsync();16await page.QuerySelectorAsync("input[name=q]");17await page.FillAsync("input[name=q]", "Playwright");18await page.Keyboard.PressAsync("Enter");19await page.WaitForNavigationAsync();20Console.WriteLine(page.Url);21await page.ScreenshotAsync("screenshot.png");22await browser.CloseAsync();23var playwright = await Playwright.CreateAsync();24var browser = await playwright.Chromium.LaunchAsync();25var context = await browser.NewContextAsync();26var page = await context.NewPageAsync();27await page.QuerySelectorAsync("input[name=q]");28await page.FillAsync("input[name=q]", "Playwright");29await page.Keyboard.PressAsync("Enter");30await page.WaitForNavigationAsync();31Console.WriteLine(page.Url);32await page.ScreenshotAsync("screenshot.png");33await browser.CloseAsync();34var playwright = await Playwright.CreateAsync();35var browser = await playwright.Chromium.LaunchAsync();36var context = await browser.NewContextAsync();37var page = await context.NewPageAsync();38await page.QuerySelectorAsync("input[name=q]");39await page.FillAsync("input[name=q]", "Playwright");40await page.Keyboard.PressAsync("Enter");41await page.WaitForNavigationAsync();42Console.WriteLine(page.Url);43await page.ScreenshotAsync("screenshot

QuerySelectorAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;4{5    {6        static async Task Main(string[] args)7        {8            using var playwright = await Playwright.CreateAsync();9            await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions { Headless = false });10            var page = await browser.NewPageAsync();11            await page.ClickAsync("text=Sign in");12            var element = await page.QuerySelectorAsync("input[type='email']");13            await element.TypeAsync("testuser");14            Console.WriteLine("Hello World!");15        }16    }17}18using System;19using System.Threading.Tasks;20using Microsoft.Playwright;21{22    {23        static async Task Main(string[] args)24        {25            using var playwright = await Playwright.CreateAsync();26            await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions { Headless = false });27            var page = await browser.NewPageAsync();28            await page.ClickAsync("text=Sign in");29            var elements = await page.QuerySelectorAllAsync("input[type='email']");30            foreach (var element in elements)31            {32                await element.TypeAsync("testuser");33            }34            Console.WriteLine("Hello World!");35        }36    }37}38using System;39using System.Threading.Tasks;40using Microsoft.Playwright;41{42    {43        static async Task Main(string[] args)44        {45            using var playwright = await Playwright.CreateAsync();46            await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions { Headless = false });47            var page = await browser.NewPageAsync();48            await page.ClickAsync("text=Sign in");49            var element = await page.QuerySelectorAsync("input[type='email']");50            await element.TypeAsync("testuser");51            var element2 = await element.QuerySelectorAsync("input[type='password']");52            await element2.TypeAsync("testpassword");

QuerySelectorAsync

Using AI Code Generation

1var playwright = await Playwright.CreateAsync();2var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions3{4});5var context = await browser.NewContextAsync();6var page = await context.NewPageAsync();7var search = await page.QuerySelectorAsync("input[name='q']");8await search.TypeAsync("Hello World");9await page.ScreenshotAsync("example.png");10await browser.CloseAsync();11var playwright = await Playwright.CreateAsync();12var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions13{14});15var context = await browser.NewContextAsync();16var page = await context.NewPageAsync();17var search = await page.QuerySelectorAsync("input[name='q']");18await search.TypeAsync("Hello World");19await page.ScreenshotAsync("example.png");20await browser.CloseAsync();21var playwright = await Playwright.CreateAsync();22var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions23{24});25var context = await browser.NewContextAsync();26var page = await context.NewPageAsync();27var search = await page.QuerySelectorAsync("input[name='q']");28await search.TypeAsync("Hello World");29await page.ScreenshotAsync("example.png");30await browser.CloseAsync();31var playwright = await Playwright.CreateAsync();32var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions33{34});35var context = await browser.NewContextAsync();36var page = await context.NewPageAsync();37var search = await page.QuerySelectorAsync("input[name='q']");38await search.TypeAsync("Hello World");39await page.ScreenshotAsync("example.png");40await browser.CloseAsync();41var playwright = await Playwright.CreateAsync();

QuerySelectorAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;4using Microsoft.Playwright.Core;5{6    {7        static async Task Main(string[] args)8        {9            await using var playwright = await Playwright.CreateAsync();10            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions11            {12            });13            var page = await browser.NewPageAsync();14            var element = await page.QuerySelectorAsync("input[name=q]");15            await element.TypeAsync("Hello, World!");16            await element.PressAsync("Enter");17            await page.ScreenshotAsync("google.png");18        }19    }20}21using System;22using System.Threading.Tasks;23using Microsoft.Playwright;24using Microsoft.Playwright.Core;25{26    {27        static async Task Main(string[] args)28        {29            await using var playwright = await Playwright.CreateAsync();30            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions31            {32            });33            var page = await browser.NewPageAsync();34            var elements = await page.QuerySelectorAllAsync("input[name=q]");35            await elements[0].TypeAsync("Hello, World!");36            await elements[0].PressAsync("Enter");37            await page.ScreenshotAsync("google.png");38        }39    }40}41using System;42using System.Threading.Tasks;43using Microsoft.Playwright;44using Microsoft.Playwright.Core;45{46    {47        static async Task Main(string[] args)48        {49            await using var playwright = await Playwright.CreateAsync();50            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions51            {52            });53            var page = await browser.NewPageAsync();54            var element = await page.QuerySelectorAsync("input[name=q]");55            await element.TypeAsync("Hello, World!");56            await element.PressAsync("Enter");

QuerySelectorAsync

Using AI Code Generation

1using Microsoft.Playwright.Core;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            using var playwright = await Playwright.CreateAsync();9            await using var browser = await playwright.Chromium.LaunchAsync();10            var page = await browser.NewPageAsync();11            var searchBox = await page.QuerySelectorAsync("input[name=q]");12            await searchBox.TypeAsync("playwright");13            await searchBox.PressAsync("Enter");14            await page.WaitForNavigationAsync();15            await page.ScreenshotAsync("screenshot.png");16        }17    }18}19using Microsoft.Playwright.Core;20using System;21using System.Threading.Tasks;22{23    {24        static async Task Main(string[] args)25        {26            using var playwright = await Playwright.CreateAsync();27            await using var browser = await playwright.Chromium.LaunchAsync();28            var page = await browser.NewPageAsync();29            var searchBox = await page.QuerySelectorAsync("input[name=q]");30            await searchBox.TypeAsync("playwright");31            await searchBox.PressAsync("Enter");32            await page.WaitForNavigationAsync();33            var result = await page.QuerySelectorAllAsync("h3");34            foreach (var item in result)35            {36                Console.WriteLine(await item.TextContentAsync());37            }38        }39    }40}41using Microsoft.Playwright.Core;42using System;43using System.Threading.Tasks;44{45    {46        static async Task Main(string[] args)47        {48            using var playwright = await Playwright.CreateAsync();49            await using var browser = await playwright.Chromium.LaunchAsync();

QuerySelectorAsync

Using AI Code Generation

1using Microsoft.Playwright;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            Console.WriteLine("Hello World!");9            using var playwright = await Playwright.CreateAsync();10            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions11            {12            });13            var page = await browser.NewPageAsync();14            var element = await page.QuerySelectorAsync("input");15            await element.TypeAsync("Hello World");16            await page.PressAsync("input", "Enter");17            await page.ScreenshotAsync(new PageScreenshotOptions18            {19            });20            Console.WriteLine("Done");21            Console.ReadLine();22        }23    }24}

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.