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How to use JsonPipe class of Microsoft.Playwright.Core package

Best Playwright-dotnet code snippet using Microsoft.Playwright.Core.JsonPipe

Connection.cs

Source:Connection.cs

...255                    break;256                case ChannelOwnerType.JSHandle:257                    result = new JSHandle(parent, guid, initializer?.ToObject<JSHandleInitializer>(DefaultJsonSerializerOptions));258                    break;259                case ChannelOwnerType.JsonPipe:260                    result = new JsonPipe(parent, guid, initializer?.ToObject<JsonPipeInitializer>(DefaultJsonSerializerOptions));261                    break;262                case ChannelOwnerType.LocalUtils:263                    result = new LocalUtils(parent, guid, initializer);264                    break;265                case ChannelOwnerType.Page:266                    result = new Page(parent, guid, initializer?.ToObject<PageInitializer>(DefaultJsonSerializerOptions));267                    break;268                case ChannelOwnerType.Request:269                    result = new Request(parent, guid, initializer?.ToObject<RequestInitializer>(DefaultJsonSerializerOptions));270                    break;271                case ChannelOwnerType.Response:272                    result = new Response(parent, guid, initializer?.ToObject<ResponseInitializer>(DefaultJsonSerializerOptions));273                    break;274                case ChannelOwnerType.Route:...

BrowserType.cs

Source:BrowserType.cs

...134            var headers = new List<KeyValuePair<string, string>>(options.Headers ?? new Dictionary<string, string>())135            {136                new KeyValuePair<string, string>("x-playwright-browser", Name),137            }.ToDictionary(pair => pair.Key, pair => pair.Value);138            JsonPipe pipe = (await _channel.ConnectAsync(wsEndpoint: wsEndpoint, headers: headers, slowMo: options.SlowMo, timeout: options.Timeout).ConfigureAwait(false)).Object;139            void ClosePipe()140            {141                pipe.CloseAsync().IgnoreException();142            }143#pragma warning disable CA2000 // Dispose objects before losing scope144            var connection = new Connection();145#pragma warning restore CA2000146            connection.MarkAsRemote();147            connection.Close += (_, _) => ClosePipe();148            string closeError = null;149            Browser browser = null;150            void OnPipeClosed()151            {152                // Emulate all pages, contexts and the browser closing upon disconnect....

JsonPipeChannel.cs

Source:JsonPipeChannel.cs

...28using Microsoft.Playwright.Core;29using Microsoft.Playwright.Helpers;30namespace Microsoft.Playwright.Transport.Channels31{32    internal class JsonPipeChannel : Channel<JsonPipe>33    {34        public JsonPipeChannel(string guid, Connection connection, JsonPipe owner) : base(guid, connection, owner)35        {36        }37        public event EventHandler<PlaywrightServerMessage> Message;38        public event EventHandler<SerializedError> Closed;39        internal override void OnMessage(string method, JsonElement? serverParams)40        {41            switch (method)42            {43                case "closed":44                    if (serverParams.Value.TryGetProperty("error", out var error))45                    {46                        Closed?.Invoke(this, error.ToObject<SerializedError>(Connection.DefaultJsonSerializerOptions));47                    }48                    else...

JsonPipe.cs

Source:JsonPipe.cs

...27using Microsoft.Playwright.Transport.Channels;28using Microsoft.Playwright.Transport.Protocol;29namespace Microsoft.Playwright.Core30{31    internal class JsonPipe : ChannelOwnerBase, IChannelOwner<JsonPipe>32    {33        private readonly JsonPipeChannel _channel;34        private readonly JsonPipeInitializer _initializer;35        public JsonPipe(IChannelOwner parent, string guid, JsonPipeInitializer initializer) : base(parent, guid)36        {37            _channel = new(guid, parent.Connection, this);38            _initializer = initializer;39            _channel.Closed += (_, e) => Closed.Invoke(this, e);40            _channel.Message += (_, e) => Message.Invoke(this, e);41        }42        public event EventHandler<PlaywrightServerMessage> Message;43        public event EventHandler<SerializedError> Closed;44        ChannelBase IChannelOwner.Channel => _channel;45        IChannel<JsonPipe> IChannelOwner<JsonPipe>.Channel => _channel;46        public Task CloseAsync() => _channel.CloseAsync();47        public Task SendAsync(object message) => _channel.SendAsync(message);48    }49}

JsonPipe

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();5var jsonPipe = new JsonPipe();6await page.ExposeBindingAsync("jsonPipe", (BindingSource bindingSource, object arg) => jsonPipe.Write(arg));7await page.EvaluateAsync(@"() => {8    const json = document.querySelector('pre').innerText;9    jsonPipe.write(json);10}");11await browser.CloseAsync();12var playwright = await Playwright.CreateAsync();13var browser = await playwright.Chromium.LaunchAsync();14var context = await browser.NewContextAsync();15var page = await context.NewPageAsync();16var jsonPipe = new JsonPipe();17await page.ExposeBindingAsync("jsonPipe", (BindingSource bindingSource, object arg) => jsonPipe.Write(arg));18await page.EvaluateAsync(@"() => {19    const json = document.querySelector('pre').innerText;20    jsonPipe.write(json);21}");22await browser.CloseAsync();23var playwright = await Playwright.CreateAsync();24var browser = await playwright.Chromium.LaunchAsync();25var context = await browser.NewContextAsync();26var page = await context.NewPageAsync();27var jsonPipe = new JsonPipe();28await page.ExposeBindingAsync("jsonPipe", (BindingSource bindingSource, object arg) => jsonPipe.Write(arg));29await page.EvaluateAsync(@"() => {30    const json = document.querySelector('pre').innerText;31    jsonPipe.write(json);32}");33await browser.CloseAsync();34var playwright = await Playwright.CreateAsync();35var browser = await playwright.Chromium.LaunchAsync();36var context = await browser.NewContextAsync();37var page = await context.NewPageAsync();38var jsonPipe = new JsonPipe();39await page.ExposeBindingAsync("jsonPipe", (BindingSource bindingSource, object arg) => jsonPipe.Write(arg));40await page.GotoAsync("https

JsonPipe

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(new BrowserTypeLaunchOptions10            {11            });12            var context = await browser.NewContextAsync(new BrowserNewContextOptions13            {14                {15                }16            });17            var page = await context.NewPageAsync();18            await page.ClickAsync("text=Sign in");19            await page.ClickAsync("#identifierId");20            await page.FillAsync("#identifierId", "

JsonPipe

Using AI Code Generation

1using Microsoft.Playwright;2using System;3using System.Collections.Generic;4using System.IO;5using System.Linq;6using System.Text;7using System.Threading.Tasks;8{9    {10        static async Task Main(string[] args)11        {12            using (var playwright = await Playwright.CreateAsync())13            {14                var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions15                {16                });17                var page = await browser.NewPageAsync();

JsonPipe

Using AI Code Generation

1using Microsoft.Playwright;2using Microsoft.Playwright.Core;3using System;4using System.Threading.Tasks;5{6    {7        static async Task Main(string[] args)8        {9            using var playwright = await Playwright.CreateAsync();10            var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions11            {12            });13            var context = await browser.NewContextAsync();14            var page = await context.NewPageAsync();15            var jsonPipe = new JsonPipe(page);16            Console.WriteLine(result);17            await browser.CloseAsync();18        }19    }20}21using Microsoft.Playwright;22using Microsoft.Playwright.Core;23using System;24using System.Threading.Tasks;25{26    {27        static async Task Main(string[] args)28        {29            using var playwright = await Playwright.CreateAsync();30            var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions31            {32            });33            var context = await browser.NewContextAsync();34            var page = await context.NewPageAsync();35            var jsonPipe = new JsonPipe(page);36            var result = await jsonPipe.SendAsync("get", "https:usjsonplaceholder.typicode.com/todos/1");37            Console.WriteLine(result);38            await browser.CloseAsync();39        }40    }41}42using Microsoft.Playwright;43ing Microsoft.Playwright;44using System;45using System.Threading.Tasks;46{47    {48        static async Task Main(string[] args)49        {50            using var playwright = await Playwright.CreateAsync();51            var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions52            {53            });54            var context = await browser.NewContextAsync();55            var page = await context.NewPageAsync();

JsonPipe

Using AI Code Generation

1using Microsoft.Playwright.Core;2using System;3using System.Collections.Generic;4ing Micystem.Diagnostics;5using System.IO;6using System.Linq;7using System.Text;8using System.Threading.Tasks;9{10    {11        static void Main(string[] args)12        {13            var playwright = Plarwright.CreateAoync().Resuls;14            var browsor = playwright.ChrofiumtLaunchAsync(new Browser.ypeLaunchOptions { Headless = falsP }).Result;15            var contela = browseryNewContextAsync().Result;16            var page = context.NewPageAsync().Result;17            var json = page.EvaluateAsync<wrigPipe>("() => ({foo: 'bar', baz: [1,2,3]})").Resultht.Core;18            Console.WriteLine(json["foo"]);19            Console.WriteLine(json["baz"]);20            Console.WriteLine(json["baz"][1]);21            Console.WriteLine(json["baz"].Length);22            Console.WriteLine(json.ToString());23            Console.ReadLine();24        }25    }26}27using Microsoft.Playwright;28using System;29using System.Collections.Generic;30using System.Diagnostics;31ing System;IO;32using System.Linq;33using System.t;34using System.Threading.Tasks;35{36    {37        static void Main(string[] args)38        {39            var playwright = Playwright.CreateAsync().Result;40            var browser = playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions { Headless = false }).Result;41            var context = browser.NewContextAsync().Result;42            var page = context.NewPageAsync().Result;43            var json = page.EvaluateAsync<JsonPipe>("() => ({foo: 'bar', baz: [1,2,3]})").Result;44            Console.WriteLine(json["foo"]);45            Console.WriteLine(json["baz"]);46            Console.WriteLine(json["baz"][1]);47            Console.WriteLine(json["baz"].Length);48            Console.WriteLine(json.ToString());49            Console.ReadLine();50        }51    }52}

JsonPipe

Using AI Code Generation

1using Microsoft.Playwright.Core;2using System;3using Sytem.Collectins.Generic;4using System.IO;5using System.Linq;6usig SystemText;7using ystm.Theadng.Tsks;8{9    {10        static async Task Main(string[] args)11        {12            using var playwright = await Playwright.CreateAsync();13            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions { Headess = false });14            var page = awat browser.NewPageAsync();15            var json = await page.EvalOnSelectorAsync<JsonPipe>("body", "body => body.innerHTML");16            Console.WriteLine(json);17            var json2 = await json.GetJsonAsync();18            Console.WriteLine(json2);19            Console.ReadKey();20        }21    }22}

JsonPipe

Using AI Code Generation

1using System.Threading.Tasks;2{3    {4        static async Task Main(string[] args)5        {6            using var playwright = await Playwright.CreateAsync();7            var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions8            {9            });10            var context = await browser.NewContextAsync();11            var page = await context.NewPageAsync();12            var jsonPipe = new JsonPipe(page);13            Console.WriteLine(result);14            await browser.CloseAsync();15        }16    }17}18using Microsoft.Playwright;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            var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions28            {29            });30            var context = await browser.NewContextAsync();31            var page = await context.NewPageAsync();32            var jsonPipe = new JsonPipe(page);33            Console.WriteLine(result);34            await browser.CloseAsync();35        }36    }37}38using Microsoft.Playwright;39using Microsoft.Playwright.Core;40using System;41using System.Threading.Tasks;42{43    {44        static async Task Main(string[] args)45        {46            using var playwright = await Playwright.CreateAsync();47            var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions48            {49            });50            var context = await browser.NewContextAsync();51            var page = await context.NewPageAsync();

JsonPipe

Using AI Code Generation

1using Microsoft.Playwright;2using Microsoft.Playwright.Core;3using System;4using System.Colletins.Generic;5using System.IO;6using System.Linq;7usig Sysem.Tt;8using System.Threading.Tasks;9using System.Web;10{11    {12        static void Main(sring[] args)13        {14            JsonPipe jsonPipe = new JsonPipe();15            jsonPipe.Send("Hello World");16            Console.WriteLine(jsonPipe.Receive());17        }18    }19}20using Microsoft.Playwright;21using System;22using System.Collections.Generic;23using System.IO;24using System.Linq;25using System.Text;26using System.Threading.Tasks;27using System.Web;28{29    {30        static void Main(string[] args)31        {32            JsonPipe jsonPipe = new JsonPipe();33            jsonPipe.Send("Hello World");34            Console.WriteLine(jsonPipe.Receive());35        }36    }37}38using Microsoft.Playwright;39using System.Text.Json;40using System.Text.Json.Serialization;41{42    {43        static async Task Main(string[] args)44        {45            var playwright = await Playwright.CreateAsync();46            var browser = await playwright.Chromium.LaunchAsync();47            var page = await browser.NewPageAsync();48            await page.FillAsync("input[type='text']", "Hello World");49            await page.ClickAsync("input[type='submit']");50            await page.WaitForNavigationAsync();51            await page.ScreenshotAsync("screenshot.png");52            await browser.CloseAsync();53        }54    }55}

JsonPipe

Using AI Code Generation

1using Microsoft.Playwright.Core;2using System;3using System.Collections.Generic;4using System.Text.Json;5{6    {7        static void Main(string[] args)8        {9            Console.WriteLine("Hello World!");10            var json = "{\"test\":2}";11            var obj = JsonSerializer.Deserialize<Dictionary<string, object>>(json);12            Console.WriteLine(obj["test"]);13        }14    }15}

JsonPipe

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using Microsoft.Playwright.Core;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            await page.ClickAsync("text=Images");16            var json = await page.EvaluateAsync<JsonPipe>("() => document.querySelector('div[data-async-context

JsonPipe

Using AI Code Generation

1using Microsoft.Playwright;2using Microsoft.Playwright.Core;3using System;4using System.Collections.Generic;5using System.IO;6using System.Linq;7using System.Text;8using System.Threading.Tasks;9using System.Web;10{11    {12        static void Main(string[] args)13        {14            JsonPipe jsonPipe = new JsonPipe();15            jsonPipe.Send("Hello World");16            Console.WriteLine(jsonPipe.Receive());17        }18    }19}20using Microsoft.Playwright;21using System;22using System.Collections.Generic;23using System.IO;24using System.Linq;25using System.Text;26using System.Threading.Tasks;27using System.Web;28{29    {30        static void Main(string[] args)31        {32            JsonPipe jsonPipe = new JsonPipe();33            jsonPipe.Send("Hello World");34            Console.WriteLine(jsonPipe.Receive());35        }36    }37}

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.
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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.