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

Best Playwright-dotnet code snippet using Microsoft.Playwright.Core.Worker.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,...

Worker.cs

Source:Worker.cs

...60            => ScriptsHelper.ParseEvaluateResult<T>(await _channel.EvaluateExpressionAsync(61                expression,62                null,63                ScriptsHelper.SerializedArgument(arg)).ConfigureAwait(false));64        public async Task<IJSHandle> EvaluateHandleAsync(string expression, object arg = null)65            => await _channel.EvaluateExpressionHandleAsync(66                expression,67                null,68                ScriptsHelper.SerializedArgument(arg))69            .ConfigureAwait(false);70        public async Task<IWorker> WaitForCloseAsync(Func<Task> action = default, float? timeout = default)71        {72            using var waiter = new Waiter(this, "worker.WaitForCloseAsync");73            var waiterResult = waiter.GetWaitForEventTask<IWorker>(this, nameof(Close), null);74            var result = waiterResult.Task.WithTimeout(Convert.ToInt32(timeout ?? 0));75            if (action != null)76            {77                await WrapApiBoundaryAsync(() => Task.WhenAll(result, action())).ConfigureAwait(false);78            }...

EvaluateHandleAsync

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            using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions10            {11            });12            using var page = await browser.NewPageAsync();13            await page.ClickAsync("text=Sign in");14            await page.FillAsync("input[type=email]", "

EvaluateHandleAsync

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            using var browser = await playwright.Chromium.LaunchAsync();10            var page = await browser.NewPageAsync();11            var worker = await page.WaitForEventAsync(PageEvent.Worker);12            var result = await worker.EvaluateHandleAsync("() => 2 + 2");13            var value = await result.JsonValueAsync();14            Console.WriteLine(value);15        }16    }17}18using Microsoft.Playwright.Core;19using System;20using System.Threading.Tasks;21{22    {23        static async Task Main(string[] args)24        {25            using var playwright = await Playwright.CreateAsync();26            using var browser = await playwright.Chromium.LaunchAsync();27            var page = await browser.NewPageAsync();28            var worker = await page.WaitForEventAsync(PageEvent.Worker);29            var result = await worker.EvaluateHandleAsync("({x}, {y}) => x * y", new { x = 2, y = 3 });30            var value = await result.JsonValueAsync();31            Console.WriteLine(value);32        }33    }34}35using Microsoft.Playwright.Core;36using System;37using System.Threading.Tasks;38{39    {40        static async Task Main(string[] args)41        {42            using var playwright = await Playwright.CreateAsync();43            using var browser = await playwright.Chromium.LaunchAsync();44            var page = await browser.NewPageAsync();45            var worker = await page.WaitForEventAsync(PageEvent.Worker);46            var result = await worker.EvaluateHandleAsync("({x}, {y}) => x * y", new { x = 2, y

EvaluateHandleAsync

Using AI Code Generation

1var browser = await Playwright.CreateAsync().Chromium.LaunchAsync(new LaunchOptions { Headless = false, SlowMo = 1000 });2var context = await browser.NewContextAsync();3var page = await context.NewPageAsync();4var worker = await page.EvaluateHandleAsync(@"() => {5    return new Worker('worker.js');6}");7await worker.EvaluateHandleAsync(@"() => {8    return new Worker('worker.js');9}");10await browser.CloseAsync();11var worker = await self.evaluateHandleAsync(@"() => {12    return new Worker('worker.js');13}");14await worker.EvaluateHandleAsync(@"() => {15    return new Worker('worker.js');16}");17Error: Protocol error (Runtime.callFunctionOn): Cannot find context with specified id18public async Task NestedWorkers()19{20    var browser = await Playwright.CreateAsync().Chromium.LaunchAsync(new LaunchOptions { Headless = false, SlowMo = 1000 });21    var context = await browser.NewContextAsync();22    var page = await context.NewPageAsync();23    var worker = await page.EvaluateHandleAsync(@"() => {24        return new Worker('worker.js');25    }");26    await worker.EvaluateHandleAsync(@"() => {27        return new Worker('worker.js');28    }");29    await browser.CloseAsync();30}31public async Task NestedWorkers()32{33    var browser = await Playwright.CreateAsync().Chromium.LaunchAsync(new LaunchOptions { Headless = false, SlowMo = 1000 });34    var context = await browser.NewContextAsync();35    var page = await context.NewPageAsync();36    var worker = await page.EvaluateHandleAsync(@"() => {37        return new Worker('worker.js');38    }");39    await worker.EvaluateHandleAsync(@"() => {40        return new Worker('worker.js');41    }");42    await browser.CloseAsync();43}

EvaluateHandleAsync

Using AI Code Generation

1var page = await browser.NewPageAsync();2var worker = await page.WaitForEventAsync(PageEvent.Worker);3var result = await worker.EvaluateHandleAsync("() => 1 + 2");4Console.WriteLine(await result.JsonValueAsync());5await browser.CloseAsync();6var page = await browser.NewPageAsync();7var worker = await page.WaitForEventAsync(PageEvent.Worker);8var result = await worker.EvaluateHandleAsync("({x}) => x", new { x = 5 });9Console.WriteLine(await result.JsonValueAsync());10await browser.CloseAsync();11var page = await browser.NewPageAsync();12var worker = await page.WaitForEventAsync(PageEvent.Worker);13var result = await worker.EvaluateHandleAsync("({x}) => x", new { x = new[] { 1, 2, 3 } });14Console.WriteLine(await result.JsonValueAsync());15await browser.CloseAsync();16var page = await browser.NewPageAsync();17var worker = await page.WaitForEventAsync(PageEvent.Worker);18var result = await worker.EvaluateHandleAsync("({x}) => x", new { x = new Dictionary<string, int> { { "a", 1 }, { "b", 2 } } });19Console.WriteLine(await result.JsonValueAsync());20await browser.CloseAsync();21{"a":1,"b":2}22var page = await browser.NewPageAsync();

EvaluateHandleAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3{4    {5        static async Task Main(string[] args)6        {7            using var playwright = await Playwright.CreateAsync();8            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions9            {10            });11            var page = await browser.NewPageAsync();12            await page.FillAsync("input[aria-label=\"Search\"]", "hello world");13            await page.ClickAsync("input[value=\"Google Search\"]");14            var worker = await page.WaitForEventAsync(PageEvent.Worker);15            var result = await worker.EvaluateHandleAsync("() => new Promise(resolve => setTimeout(() => resolve(1), 1000))");16            Console.WriteLine(result);17        }18    }19}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(new BrowserTypeLaunchOptions28            {29            });30            var page = await browser.NewPageAsync();31            await page.FillAsync("input[aria-label=\"Search\"]", "hello world");32            await page.ClickAsync("input[value=\"Google Search\"]");33            var worker = await page.WaitForEventAsync(PageEvent.Worker);34            var result = await worker.EvaluateAsync<int>("() => new Promise(resolve => setTimeout(() => resolve(1), 1000))");35            Console.WriteLine(result);36        }37    }38}39using System;40using System.Threading.Tasks;41{42    {43        static async Task Main(string[] args)44        {45            using var playwright = await Playwright.CreateAsync();

EvaluateHandleAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;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 LaunchOptions11            {12            });13            var page = await browser.NewPageAsync();14            var worker = await page.WaitForEventAsync(PageEvent.Worker);15            var handle = await worker.EvaluateHandleAsync("() => window.location");16            var json = await handle.JsonValueAsync();17            Console.WriteLine(json);18        }19    }20}21{ "href": "about:blank", "origin": "null", "protocol": "about:", "username": "", "password": "", "host": "", "hostname": "", "port": "", "pathname": "blank", "search": "", "hash": "" }22using System;23using System.Threading.Tasks;24using Microsoft.Playwright;25{26    {27        static async Task Main(string[] args)28        {29            Console.WriteLine("Hello World!");30            using var playwright = await Playwright.CreateAsync();31            await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions32            {33            });34            var page = await browser.NewPageAsync();35            var worker = await page.WaitForEventAsync(PageEvent.Worker);36            var handle = await worker.EvaluateHandleAsync("() => document");37            var json = await handle.JsonValueAsync();38            Console.WriteLine(json);39        }40    }41}

EvaluateHandleAsync

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 page = await browser.NewPageAsync();13            var worker = await page.WaitForEventAsync(PageEvent.Worker);14            var result = await worker.EvaluateHandleAsync("() => window");15            Console.WriteLine(result);16        }17    }18}19using System;20using System.Threading.Tasks;21using Microsoft.Playwright;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(new BrowserTypeLaunchOptions28            {29            });30            var page = await browser.NewPageAsync();31            var worker = await page.WaitForEventAsync(PageEvent.Worker);32            var result = await worker.EvaluateHandleAsync("() => window");33            var json = await result.GetJsonValueAsync();34            Console.WriteLine(json);35        }36    }37}38{}

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