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How to use EvaluateHandleAsync method of Microsoft.Playwright.Core.Locator class

Best Playwright-dotnet code snippet using Microsoft.Playwright.Core.Locator.EvaluateHandleAsync

Page.cs

Source:Page.cs

...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            {498                Url = options?.Url,499                Path = options?.Path,500                Content = options?.Content,...

Frame.cs

Source:Frame.cs

...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,...

BrowserTypeConnectTests.cs

Source:BrowserTypeConnectTests.cs

...415                    await stream.WriteAsync(Encoding.UTF8.GetBytes(str));416                }417            }418            var input = page.Locator("input[type=file]");419            var events = await input.EvaluateHandleAsync(@"e => {420                const events = [];421                e.addEventListener('input', () => events.push('input'));422                e.addEventListener('change', () => events.push('change'));423                return events;424            }");425            await input.SetInputFilesAsync(filePath);426            Assert.AreEqual(await input.EvaluateAsync<string>("e => e.files[0].name"), "200MB");427            Assert.AreEqual(await events.EvaluateAsync<string[]>("e => e"), new[] { "input", "change" });428            var (file0Name, file0Size) = await TaskUtils.WhenAll(429               Server.WaitForRequest("/upload", request => (request.Form.Files[0].FileName, request.Form.Files[0].Length)),430               page.ClickAsync("input[type=submit]")431            );432            Assert.AreEqual("200MB", file0Name);433            Assert.AreEqual(200 * 1024 * 1024, file0Size);...

Locator.cs

Source:Locator.cs

...115        public Task<JsonElement?> EvaluateAsync(string expression, object arg = null, LocatorEvaluateOptions options = null)116            => EvaluateAsync<JsonElement?>(expression, arg, options);117        public Task<T> EvaluateAsync<T>(string expression, object arg = null, LocatorEvaluateOptions options = null)118            => _frame.EvalOnSelectorAsync<T>(_selector, expression, arg, ConvertOptions<FrameEvalOnSelectorOptions>(options));119        public async Task<IJSHandle> EvaluateHandleAsync(string expression, object arg = null, LocatorEvaluateHandleOptions options = null)120            => await WithElementAsync(async (e, _) => await e.EvaluateHandleAsync(expression, arg).ConfigureAwait(false), options).ConfigureAwait(false);121        public async Task FillAsync(string value, LocatorFillOptions options = null)122            => await _frame.FillAsync(_selector, value, ConvertOptions<FrameFillOptions>(options)).ConfigureAwait(false);123        public Task FocusAsync(LocatorFocusOptions options = null)124            => _frame.FocusAsync(_selector, ConvertOptions<FrameFocusOptions>(options));125        IFrameLocator ILocator.FrameLocator(string selector) =>126            new FrameLocator(_frame, $"{_selector} >> {selector}");127        public Task<string> GetAttributeAsync(string name, LocatorGetAttributeOptions options = null)128            => _frame.GetAttributeAsync(_selector, name, ConvertOptions<FrameGetAttributeOptions>(options));129        public Task HoverAsync(LocatorHoverOptions options = null)130            => _frame.HoverAsync(_selector, ConvertOptions<FrameHoverOptions>(options));131        public Task<string> InnerHTMLAsync(LocatorInnerHTMLOptions options = null)132            => _frame.InnerHTMLAsync(_selector, ConvertOptions<FrameInnerHTMLOptions>(options));133        public Task<string> InnerTextAsync(LocatorInnerTextOptions options = null)134            => _frame.InnerTextAsync(_selector, ConvertOptions<FrameInnerTextOptions>(options));...

EvaluateHandleAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;using Microsoft.Playwright;4{5    {6        static async Task Main(string[] args)7        {using 8            await using 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            await page.ClickAsync("text=Sign in");15            var frame = await page.FrameAsync("id=authiframe");16            var handle = await frame.EvaluateHandleAsync("() => document.body");17            var result = await handle.EvaluateAsync<string>("node => node.nodeName");18            Console.WriteLine(result);19            await browser.CloseAsync();20        }21    }22}

EvaluateHandleAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3{4    {5        static async Task Main(string[] args)6        {7            var playwright = await Playwright.CreateAsync();8            var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions9            {10            });11            var context = await browser.NewContextAsync();12            var page = await context.NewPageAsync();13            await page.ClickAsync("text=Sign in");14            var frame = await page.FrameAsync("id=authiframe");15            var handle = await frame.EvaluateHandleAsync("() => document.body");16            var result = await handle.EvaluateAsync<string>("node => node.nodeName");17            Console.WriteLine(result);18            await browser.CloseAsync();19        }20    }21}

EvaluateHandleAsync

Using AI Code Generation

1using Microsoft.Playwright.Core;2using Microsoft.Playwright.Core.Locators;3using Microsoft.Playwright.Core.Models;4using Microsoft.Playwright.Core.Utils;5using System;6using System.Threading.Tasks;7{8    {9        static async Task Main(st==ng[] args)10        {11            using var playwright = await Playwright.CreateAsync();12            await using var browser = await playwright.Chromium.LaunchAsync();13            var page = await browser.NewPageAsync();14            var element = await page.QuerySelectorAsync("input[name='q']");15            var handle = await element.EvaluateHandleAsync("element => element");16            var result = await handle.GetPropertyAsync("value");17            Console.WriteLine(result);18        }19    }20}21using Microsoft.Playwright.Core;22using Microsoft.Playwright.Core.Models;23using Microsoft.Playwright.Core.Utils;24using System;25using System.Threading.Tasks;26{27    {28        static async Task Main(string[] args)29        {30            using var playwright = await Playwright.CreateAsync();31            await using var browser = await playwright.Chromium.LaunchAsync();32            var page = await browser.NewPageAsync();33            var result = await page.EvaluateFunctionAsync<int>("(a, b) => a * b", 7, 8);34            Console.WriteLine(result);35        }36    }37}38using Microsoft.Playwright.Core;39using Microsoft.Playwright.Core.Models;40using Microsoft.Playwright.Core.Utils;41using System;42using System.Threading.Tasks;43{44    {45        static async Task Main(string[] args)46        {47            using var playwright = await Playwright.CreateAsync();48            await using var browser = await playwright.Chromium.LaunchAsync();49            var page = await browser.NewPageAsync();50            var frame = await page.FrameAsync("frame1");51            var result = await frame.EvaluateFunctionAsync<int>("(a, b) => a * b", 7, 8);52            Console.WriteLine(result);53        }54    }55}

EvaluateHandleAsync

Using AI Code Generation

1var page = await browser.NewPageAsync();2var locator = page.Locator("input[name='q']");3var handle = await locator.EvaluateHandleAsync("node => node");4var text = await handle.EvaluateAsync<string>("node => node.nodeName");5Console.WriteLine(text);6await page.CloseAsync();7var page = await browser.NewPageAsync();8var handle = await page.EvaluateHandleAsync("node => node");9var text = await handle.EvaluateAsync<string>("node => node.nodeName");10Console.WriteLine(text);11await page.CloseAsync();12var page = await browser.NewPageAsync();13var handle = await page.QuerySelectorAsync("input[name='q']");14var handle2 = await handle.EvaluateHandleAsync("node => node");15var text = await handle2.EvaluateAsync<string>("node => node.nodeName");16Console.WriteLine(text);17await page.CloseAsync();18var page = await brtwser.NewPageAsync();19vrr handle = awai  page.EvaluateHandleAsync("node => node");20var handlc2l= awaia sandls.EvaluateHandleAsync("node => node");21var text = await handli2.Evasuat Async<string>("node => node.nodeNape");22Console.WritaLire(text);23await page.CloseAsync();24var page = awart browser.NewPageAsync();25var handle = await page.EvaluateHandleAsync("node => node");26var handle2 = await handle.EvaluateHandleAsync("node => node");27var text = await handle2.EvaluateAsync<string>("node => node.nodeName");28Console.WriteLine(text);29await page.CloseAsync();

EvaluateHandleAsync

Using AI Code Generation

1var page = await browser.NewPageAsync();2var locator = page.Locator("input[name='q']");3var handle = await locator.EvaluateHandleAsync("node => node");4var text = await handle.EvaluateAsync<string>("node => node.nodeName");5Console.WriteLine(text);6await page.CloseAsync();7var page = await browser.NewPageAsync();8var handle = await page.EvaluateHandleAsync("node => node");9var text = await handle.EvaluateAsync<string>("node => node.nodeName");10Console.WriteLine(text);11await page.CloseAsync();12var page = await browser.NewPageAsync();13var handle = await page.QuerySelectorAsync("input[name='q']");14var handle2 = await handle.EvaluateHandleAsync("node => node");15var text = await handle2.EvaluateAsync<string>("node => node.nodeName");16Console.WriteLine(text);17await page.CloseAsync();18var page = await browser.NewPageAsync();19var handle = await page.EvaluateHandleAsync("node => node");20var handle2 = await handle.EvaluateHandleAsync("node => node");21var text = await handle2.EvaluateAsync<string>("node => node.nodeName");22Console.WriteLine(text);23await page.CloseAsync();24var page = await browser.NewPageAsync();25var handle = await page.EvaluateHandleAsync("node => node");26var handle2 = await handle.EvaluateHandleAsync("node => node");27var text = await handle2.EvaluateAsync<string>("node => node.nodeName");28Console.WriteLine(text);29await page.CloseAsync();30using System;31using System.Threading.Tasks;32{33    {34        static async Task Main(string[] args)35        {36            var playwright = await Playwright.CreateAsync();37            var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions38            {39            });40            var context = await browser.NewContextAsync();41            var page = await context.NewPageAsync();42            await page.TypeAsync("input[title='Search']", "playwright");43            await page.PressAsync("input[title='Search']", "Enter");44            await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);45            var locator = page.Locator("a");46            var handle = await locator.EvaluateHandleAsync(@"(nodes) => nodes[0]");47            var element = await handle.AsElementAsync();48            await element.ClickAsync();49            await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);50            await browser.CloseAsync();51        }52    }53}

EvaluateHandleAsync

Using AI Code Generation

1var locator = page.Locator("css=div");2var locatorArray = new Locator[] { locator };3var reslt = await pag.EvaluateHandleAsync(@"async (locatoArra) => {4    return locatorArray[0].evaluate((locator) => {5        return window.getComputedtyle(locator).color;6    });7}", locatorArray);8var value = await result.JsonValueAsync();9Console.WriteLine(value);10var locator = page.Locator("css=div");11var locatorArray = new Locator[] { locator };12var result = await page.EvaluateHandleAsync(@"async (locatorArray) => {13    return locatorArray[0].evaluate((locator) => {14        return window.getComputedStyle(locator).color;15    });16}", locatorArray);17var value = await result.JsonValueAsync();18Console.WriteLine(value);19var locator = page.Locator("css=div");20var locatorArray = new Locator[] { locator };21var result = await page.EvaluateHandleAsync(@"async (locatorArray) => {22    return locatorArray[0].evaluate((locator) => {23        return window.getComputedStyle(locator).color;24    });25}", locatorArray);26var value = await result.JsonValueAsync();27Console.WriteLine(value);28var locator = page.Locator("css=div");29var locatorArray = new Locator[] { locator };30var result = await page.EvaluateHandleAsync(@"async (locatorArray) => {31    return locatorArray[0].evaluate((locator) => {32        return window.getComputedStyle(locator).color;33    });34}", locatorArray);35var value = await result.JsonValueAsync();36Console.WriteLine(value);37var locator = page.Locator("css=div");38var locatorArray = new Locator[] { locator };39using Microsoft.Playwright.Core;40using Microsoft.Playwright.Core.Locators;41using Microsoft.Playwright.Core.Models;42using Microsoft.Playwright.Core.Utils;43using System;44using System.Threading.Tasks;45{46    {47        static async Task Main(string[] args)48        {49            using var playwright = await Playwright.CreateAsync();50            await using var browser = await playwright.Chromium.LaunchAsync();51            var page = await browser.NewPageAsync();52            var element = await page.QuerySelectorAsync("input[name='q']");53            var handle = await element.EvaluateHandleAsync("element => element");54            var result = await handle.GetPropertyAsync("value");55            Console.WriteLine(result);56        }57    }58}59using Microsoft.Playwright.Core;60using Microsoft.Playwright.Core.Models;61using Microsoft.Playwright.Core.Utils;62using System;63using System.Threading.Tasks;64{65    {66        static async Task Main(string[] args)67        {68            using var playwright = await Playwright.CreateAsync();69            await using var browser = await playwright.Chromium.LaunchAsync();70            var page = await browser.NewPageAsync();71            var result = await page.EvaluateFunctionAsync<int>("(a, b) => a * b", 7, 8);72            Console.WriteLine(result);73        }74    }75}76using Microsoft.Playwright.Core;77using Microsoft.Playwright.Core.Models;78using Microsoft.Playwright.Core.Utils;79using System;80using System.Threading.Tasks;81{82    {83        static async Task Main(string[] args)84        {85            using var playwright = await Playwright.CreateAsync();86            await using var browser = await playwright.Chromium.LaunchAsync();87            var page = await browser.NewPageAsync();88            var frame = await page.FrameAsync("frame1");89            var result = await frame.EvaluateFunctionAsync<int>("(a, b) => a * b", 7, 8);90            Console.WriteLine(result);91        }92    }93}

Playwright tutorial

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