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

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

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));...

PageNetworkRequestTest.cs

Source:PageNetworkRequestTest.cs

...82            await Page.GotoAsync(Server.EmptyPage);83            Server.SetRoute("/post", _ => Task.CompletedTask);84            IRequest request = null;85            Page.Request += (_, e) => request = e;86            await Page.EvaluateHandleAsync("fetch('./post', { method: 'POST', body: JSON.stringify({ foo: 'bar'})})");87            Assert.NotNull(request);88            Assert.AreEqual("{\"foo\":\"bar\"}", request.PostData);89        }90        [PlaywrightTest("page-network-request.spec.ts", "should work with binary post data")]91        public async Task ShouldWorkWithBinaryPostData()92        {93            await Page.GotoAsync(Server.EmptyPage);94            Server.SetRoute("/post", _ => Task.CompletedTask);95            IRequest request = null;96            Page.Request += (_, e) => request = e;97            await Page.EvaluateHandleAsync("fetch('./post', { method: 'POST', body: new Uint8Array(Array.from(Array(256).keys())) })");98            Assert.NotNull(request);99            byte[] data = request.PostDataBuffer;100            Assert.AreEqual(256, data.Length);101            for (int index = 0; index < data.Length; index++)102            {103                Assert.AreEqual(index, data[index]);104            }105        }106        [PlaywrightTest("page-network-request.spec.ts", "should work with binary post data and interception")]107        public async Task ShouldWorkWithBinaryPostDataAndInterception()108        {109            await Page.GotoAsync(Server.EmptyPage);110            Server.SetRoute("/post", _ => Task.CompletedTask);111            await Page.RouteAsync("/post", (route) => route.ContinueAsync());112            IRequest request = null;113            Page.Request += (_, e) => request = e;114            await Page.EvaluateHandleAsync("fetch('./post', { method: 'POST', body: new Uint8Array(Array.from(Array(256).keys())) })");115            Assert.NotNull(request);116            byte[] data = request.PostDataBuffer;117            Assert.AreEqual(256, data.Length);118            for (int index = 0; index < data.Length; index++)119            {120                Assert.AreEqual(index, data[index]);121            }122        }123        [PlaywrightTest("page-network-request.spec.ts", "should be |undefined| when there is no post data")]124        public async Task ShouldBeUndefinedWhenThereIsNoPostData()125        {126            var response = await Page.GotoAsync(Server.EmptyPage);127            Assert.Null(response.Request.PostData);128        }129        [PlaywrightTest("page-network-request.spec.ts", "should parse the json post data")]130        public async Task ShouldParseTheJsonPostData()131        {132            await Page.GotoAsync(Server.EmptyPage);133            Server.SetRoute("/post", _ => Task.CompletedTask);134            IRequest request = null;135            Page.Request += (_, e) => request = e;136            await Page.EvaluateHandleAsync("fetch('./post', { method: 'POST', body: JSON.stringify({ foo: 'bar'})})");137            Assert.NotNull(request);138            Assert.AreEqual("bar", request.PostDataJSON()?.GetProperty("foo").ToString());139        }140        [PlaywrightTest("page-network-request.spec.ts", "should parse the data if content-type is application/x-www-form-urlencoded")]141        public async Task ShouldParseTheDataIfContentTypeIsApplicationXWwwFormUrlencoded()142        {143            await Page.GotoAsync(Server.EmptyPage);144            Server.SetRoute("/post", _ => Task.CompletedTask);145            IRequest request = null;146            Page.Request += (_, e) => request = e;147            await Page.SetContentAsync("<form method='POST' action='/post'><input type='text' name='foo' value='bar'><input type='number' name='baz' value='123'><input type='submit'></form>");148            await Page.ClickAsync("input[type=submit]");149            Assert.NotNull(request);150            var element = request.PostDataJSON();...

EvaluateHandleAsync

Using AI Code Generation

1var playwright = await Microsoft.Playwright.Core.Playwright.CreateAsync();2var browser = await playwright.Chromium.LaunchAsync();3var context = await browser.NewContextAsync();4var page = await context.NewPageAsync();5var element = await page.QuerySelectorAsync("input");6var handle = await element.EvaluateHandleAsync("x => x");7Console.WriteLine(handle);8await browser.CloseAsync();9var playwright = await Microsoft.Playwright.Core.Playwright.CreateAsync();10var browser = await playwright.Chromium.LaunchAsync();11var context = await browser.NewContextAsync();12var page = await context.NewPageAsync();13var element = await page.QuerySelectorAsync("input");14var handle = await element.EvaluateHandleAsync("x => x");15var elementHandle = await handle.AsElementAsync();16Console.WriteLine(elementHandle);17await browser.CloseAsync();18var playwright = await Microsoft.Playwright.Core.Playwright.CreateAsync();19var browser = await playwright.Chromium.LaunchAsync();20var context = await browser.NewContextAsync();21var page = await context.NewPageAsync();22var handle = await page.EvaluateHandleAsync("() => document.body");23Console.WriteLine(handle);24await browser.CloseAsync();25var playwright = await Microsoft.Playwright.Core.Playwright.CreateAsync();26var browser = await playwright.Chromium.LaunchAsync();27var context = await browser.NewContextAsync();28var page = await context.NewPageAsync();29var handle = await page.EvaluateHandleAsync("() => window");30Console.WriteLine(handle);31await browser.CloseAsync();32var playwright = await Microsoft.Playwright.Core.Playwright.CreateAsync();

EvaluateHandleAsync

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(new LaunchOptions { Headless = false });8        var page = await browser.NewPageAsync();9        var handle = await page.EvaluateHandleAsync("() => document.body");10        var result = await handle.GetJsonValueAsync();11        await browser.CloseAsync();12    }13}

EvaluateHandleAsync

Using AI Code Generation

1using Microsoft.Playwright;2using System;3using System.Collections.Generic;4using System.Linq;5using System.Text;6using System.Threading.Tasks;7{8    {9        static async Task Main(string[] args)10        {11            using var playwright = await Playwright.CreateAsync();12            await using var browser = await playwright.Chromium.LaunchAsync();13            var context = await browser.NewContextAsync();14            var page = await context.NewPageAsync();15            var element = await page.EvaluateHandleAsync("() => document");16            await element.DisposeAsync();17            await context.CloseAsync();18        }19    }20}

EvaluateHandleAsync

Using AI Code Generation

1using Microsoft.Playwright;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            await 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            var handle = await page.QuerySelectorAsync("input[name=q]");12            var result = await handle.EvaluateHandleAsync("element => element");13            Console.WriteLine(await result.EvaluateAsync<string>("e => e.nodeName"));14        }15    }16}

EvaluateHandleAsync

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();11            var page = await browser.NewPageAsync();12            var handle = await page.EvaluateHandleAsync("() => document.body");13            Console.WriteLine(handle);14            await browser.CloseAsync();15        }16    }17}18using System;19using System.Threading.Tasks;20using Microsoft.Playwright;21using Microsoft.Playwright.Core;22{23    {24        static async Task Main(string[] args)25        {26            await using var playwright = await Playwright.CreateAsync();27            await using var browser = await playwright.Chromium.LaunchAsync();28            var page = await browser.NewPageAsync();29            var handle = await page.EvaluateHandleAsync("() => document.body");30            Console.WriteLine(handle);31            await browser.CloseAsync();32        }33    }34}35using System;36using System.Threading.Tasks;37using Microsoft.Playwright;38using Microsoft.Playwright.Core;39{40    {41        static async Task Main(string[] args)42        {43            await using var playwright = await Playwright.CreateAsync();44            await using var browser = await playwright.Chromium.LaunchAsync();

EvaluateHandleAsync

Using AI Code Generation

1void Main()2{3	var playwright = await Playwright.CreateAsync();4	var browser = await playwright.Chromium.LaunchAsync();5	var page = await browser.NewPageAsync();6	var elementHandle = await page.QuerySelectorAsync("input");7	var value = await elementHandle.EvaluateHandleAsync("element => element.value");8	Console.WriteLine(value);9}10void Main()11{12	var playwright = await Playwright.CreateAsync();13	var browser = await playwright.Chromium.LaunchAsync();14	var page = await browser.NewPageAsync();15	var elementHandle = await page.QuerySelectorAsync("input");16	var value = await elementHandle.EvaluateHandleAsync("element => element.value");17	Console.WriteLine(value);18}19void Main()20{21	var playwright = await Playwright.CreateAsync();22	var browser = await playwright.Chromium.LaunchAsync();23	var page = await browser.NewPageAsync();24	var elementHandle = await page.QuerySelectorAsync("input");25	var value = await elementHandle.EvaluateHandleAsync("element => element.value");26	Console.WriteLine(value);27}28void Main()29{30	var playwright = await Playwright.CreateAsync();31	var browser = await playwright.Chromium.LaunchAsync();32	var page = await browser.NewPageAsync();33	var elementHandle = await page.QuerySelectorAsync("input");34	var value = await elementHandle.EvaluateHandleAsync("element => element.value");35	Console.WriteLine(value);36}37void Main()38{39	var playwright = await Playwright.CreateAsync();40	var browser = await playwright.Chromium.LaunchAsync();41	var page = await browser.NewPageAsync();42	var elementHandle = await page.QuerySelectorAsync("input");43	var value = await elementHandle.EvaluateHandleAsync("element => element.value");44	Console.WriteLine(value);45}

EvaluateHandleAsync

Using AI Code Generation

1using Microsoft.Playwright.Core;2using System;3{4    {5        static async Task Main(string[] args)6        {7            string script = "document.querySelector('input[name=\"q\"]').value = 'Hello world'";8            using var playwright = await Microsoft.Playwright.Core.Playwright.CreateAsync();9            var browser = await playwright.Chromium.LaunchAsync();10            var page = await browser.NewPageAsync();11            await page.GoToAsync(url);12            var input = await page.QuerySelectorAsync("input[name=\"q\"]");13            await input.TypeAsync("Hello world");14            await page.EvaluateHandleAsync(script);15            var value = await page.EvaluateHandleAsync("document.querySelector('input[name=\"q\"]').value");16            string result = await value.JsonValueAsync();17            Console.WriteLine(result);18            await browser.CloseAsync();19        }20    }21}

EvaluateHandleAsync

Using AI Code Generation

1using Microsoft.Playwright;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(headless: false);10            var page = await browser.NewPageAsync();11            var frame = page.MainFrame;12            var handle = await frame.EvaluateHandleAsync(@"() => {13                const div = document.createElement('div');14                div.textContent = 'Hello, world!';15                return div;16            }");17            Console.WriteLine(await handle.TextContentAsync());18        }19    }20}21using Microsoft.Playwright;22using System;23using System.Threading.Tasks;24{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(headless: false);30            var page = await browser.NewPageAsync();31            var frame = page.MainFrame;32            var handle = await frame.EvaluateHandleAsync(@"() => {33                const div = document.createElement('div');34                div.textContent = 'Hello, world!';35                return div;36            }");37            Console.WriteLine(await handle.JsonValueAsync());38        }39    }40}41{"type":"node","subtype":"element","className":"HTMLDivElement","description":"<div>Hello, world!</div>","objectId":"{\"injectedScriptId\":1,\"id\":1}"}

EvaluateHandleAsync

Using AI Code Generation

1using Microsoft.Playwright;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            await 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            var handle = await element.EvaluateHandleAsync("element => element");16            Console.WriteLine(handle);17            await browser.CloseAsync();18        }19    }20}21            using var playwright = await Microsoft.Playwright.Core.Playwright.CreateAsync();22            var browser = await playwright.Chromium.LaunchAsync();23            var page = await browser.NewPageAsync();24            await page.GoToAsync(url);25            var input = await page.QuerySelectorAsync("input[name=\"q\"]");26            await input.TypeAsync("Hello world");27            await page.EvaluateHandleAsync(script);28            var value = await page.EvaluateHandleAsync("document.querySelector('input[name=\"q\"]').value");29            string result = await value.JsonValueAsync();30            Console.WriteLine(result);31            await browser.CloseAsync();32        }33    }34}

EvaluateHandleAsync

Using AI Code Generation

1using Microsoft.Playwright;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(headless: false);10            var page = await browser.NewPageAsync();11            var frame = page.MainFrame;12            var handle = await frame.EvaluateHandleAsync(@"() => {13                const div = document.createElement('div');14                div.textContent = 'Hello, world!';15                return div;16            }");17            Console.WriteLine(await handle.TextContentAsync());18        }19    }20}21using Microsoft.Playwright;22using System;23using System.Threading.Tasks;24{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(headless: false);30            var page = await browser.NewPageAsync();31            var frame = page.MainFrame;32            var handle = await frame.EvaluateHandleAsync(@"() => {33                const div = document.createElement('div');34                div.textContent = 'Hello, world!';35                return div;36            }");37            Console.WriteLine(await handle.JsonValueAsync());38        }39    }40}41{"type":"node","subtype":"element","className":"HTMLDivElement","description":"<div>Hello, world!</div>","objectId":"{\"injectedScriptId\":1,\"id\":1}"}

EvaluateHandleAsync

Using AI Code Generation

1using Microsoft.Playwright;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            await 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            var handle = await element.EvaluateHandleAsync("element => element");16            Console.WriteLine(handle);17            await browser.CloseAsync();18        }19    }20}21	var playwright = await Playwright.CreateAsync();22	var browser = await playwright.Chromium.LaunchAsync();23	var page = await browser.NewPageAsync();24	var elementHandle = await page.QuerySelectorAsync("input");25	var value = await elementHandle.EvaluateHandleAsync("element => element.value");26	Console.WriteLine(value);27}28void Main()29{30	var playwright = await Playwright.CreateAsync();31	var browser = await playwright.Chromium.LaunchAsync();32	var page = await browser.NewPageAsync();33	var elementHandle = await page.QuerySelectorAsync("input");34	var value = await elementHandle.EvaluateHandleAsync("element => element.value");35	Console.WriteLine(value);36}

EvaluateHandleAsync

Using AI Code Generation

1using Microsoft.Playwright;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            await 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            var handle = await element.EvaluateHandleAsync("element => element");16            Console.WriteLine(handle);17            await browser.CloseAsync();18        }19    }20}

Playwright tutorial

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Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
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