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How to use OnMessage method of Microsoft.Playwright.Transport.Channels.ChannelBase class
Best Playwright-dotnet code snippet using Microsoft.Playwright.Transport.Channels.ChannelBase.OnMessage
FrameChannel.cs
Source:FrameChannel.cs 
...38 {39 }40 internal event EventHandler<FrameNavigatedEventArgs> Navigated;41 internal event EventHandler<FrameChannelLoadStateEventArgs> LoadState;42 internal override void OnMessage(string method, JsonElement? serverParams)43 {44 switch (method)45 {46 case "navigated":47 var e = serverParams?.ToObject<FrameNavigatedEventArgs>(Connection.DefaultJsonSerializerOptions);48 if (serverParams.Value.TryGetProperty("newDocument", out var documentElement))49 {50 e.NewDocument = documentElement.ToObject<NavigateDocument>(Connection.DefaultJsonSerializerOptions);51 }52 Navigated?.Invoke(this, e);53 break;54 case "loadstate":55 LoadState?.Invoke(56 this,...
Connection.cs
Source:Connection.cs
...63 public ConcurrentDictionary<string, IChannelOwner> Objects { get; } = new();64 internal AsyncLocal<List<ApiZone>> ApiZone { get; } = new();65 public bool IsClosed { get; private set; }66 internal bool IsRemote { get; set; }67 internal Func<object, Task> OnMessage { get; set; }68 internal JsonSerializerOptions DefaultJsonSerializerOptions { get; }69 public void Dispose()70 {71 Dispose(true);72 GC.SuppressFinalize(this);73 }74 internal Task<JsonElement?> SendMessageToServerAsync(75 string guid,76 string method,77 object args = null)78 => SendMessageToServerAsync<JsonElement?>(guid, method, args);79 internal Task<T> SendMessageToServerAsync<T>(80 string guid,81 string method,82 object args = null) => WrapApiCallAsync(() => InnerSendMessageToServerAsync<T>(guid, method, args));83 private async Task<T> InnerSendMessageToServerAsync<T>(84 string guid,85 string method,86 object args = null)87 {88 if (IsClosed)89 {90 throw new PlaywrightException($"Connection closed ({_reason})");91 }92 int id = Interlocked.Increment(ref _lastId);93 var tcs = new TaskCompletionSource<JsonElement?>(TaskCreationOptions.RunContinuationsAsynchronously);94 var callback = new ConnectionCallback95 {96 TaskCompletionSource = tcs,97 };98 _callbacks.TryAdd(id, callback);99 var sanitizedArgs = new Dictionary<string, object>();100 if (args != null)101 {102 if (args is IDictionary<string, object> dictionary && dictionary.Keys.Any(f => f != null))103 {104 foreach (var kv in dictionary)105 {106 if (kv.Value != null)107 {108 sanitizedArgs.Add(kv.Key, kv.Value);109 }110 }111 }112 else113 {114 foreach (PropertyDescriptor propertyDescriptor in TypeDescriptor.GetProperties(args))115 {116 object obj = propertyDescriptor.GetValue(args);117 if (obj != null)118 {119#pragma warning disable CA1845 // Use span-based 'string.Concat' and 'AsSpan' instead of 'Substring120 string name = propertyDescriptor.Name.Substring(0, 1).ToLower() + propertyDescriptor.Name.Substring(1);121#pragma warning restore CA2000 // Use span-based 'string.Concat' and 'AsSpan' instead of 'Substring122 sanitizedArgs.Add(name, obj);123 }124 }125 }126 }127 await _queue.EnqueueAsync(() =>128 {129 var message = new MessageRequest130 {131 Id = id,132 Guid = guid,133 Method = method,134 Params = sanitizedArgs,135 Metadata = ApiZone.Value[0],136 };137 TraceMessage("pw:channel:command", message);138 return OnMessage(message);139 }).ConfigureAwait(false);140 var result = await tcs.Task.ConfigureAwait(false);141 if (typeof(T) == typeof(JsonElement?))142 {143 return (T)(object)result?.Clone();144 }145 else if (result == null)146 {147 return default;148 }149 else if (typeof(ChannelBase).IsAssignableFrom(typeof(T)) || typeof(ChannelBase[]).IsAssignableFrom(typeof(T)))150 {151 var enumerate = result.Value.EnumerateObject();152 return enumerate.Any()153 ? enumerate.FirstOrDefault().Value.ToObject<T>(DefaultJsonSerializerOptions)154 : default;155 }156 else157 {158 return result.Value.ToObject<T>(DefaultJsonSerializerOptions);159 }160 }161 internal IChannelOwner GetObject(string guid)162 {163 Objects.TryGetValue(guid, out var result);164 return result;165 }166 internal void MarkAsRemote() => IsRemote = true;167 internal Task<PlaywrightImpl> InitializePlaywrightAsync()168 {169 return _rootObject.InitializeAsync();170 }171 internal void OnObjectCreated(string guid, IChannelOwner result)172 {173 Objects.TryAdd(guid, result);174 }175 internal void Dispatch(PlaywrightServerMessage message)176 {177 if (message.Id.HasValue)178 {179 TraceMessage("pw:channel:response", message);180 if (_callbacks.TryRemove(message.Id.Value, out var callback))181 {182 if (message.Error != null)183 {184 callback.TaskCompletionSource.TrySetException(CreateException(message.Error.Error));185 }186 else187 {188 callback.TaskCompletionSource.TrySetResult(message.Result);189 }190 }191 return;192 }193 TraceMessage("pw:channel:event", message);194 try195 {196 if (message.Method == "__create__")197 {198 var createObjectInfo = message.Params.Value.ToObject<CreateObjectInfo>(DefaultJsonSerializerOptions);199 CreateRemoteObject(message.Guid, createObjectInfo.Type, createObjectInfo.Guid, createObjectInfo.Initializer);200 return;201 }202 if (message.Method == "__dispose__")203 {204 Objects.TryGetValue(message.Guid, out var disableObject);205 disableObject?.DisposeOwner();206 return;207 }208 Objects.TryGetValue(message.Guid, out var obj);209 obj?.Channel?.OnMessage(message.Method, message.Params);210 }211 catch (Exception ex)212 {213 DoClose(ex);214 }215 }216 private void CreateRemoteObject(string parentGuid, ChannelOwnerType type, string guid, JsonElement? initializer)217 {218 IChannelOwner result = null;219 var parent = string.IsNullOrEmpty(parentGuid) ? _rootObject : Objects[parentGuid];220#pragma warning disable CA2000 // Dispose objects before losing scope221 switch (type)222 {223 case ChannelOwnerType.Artifact:...
ElementHandleChannel.cs
Source:ElementHandleChannel.cs
...39 Object = owner;40 }41 internal event EventHandler<PreviewUpdatedEventArgs> PreviewUpdated;42 public new ElementHandle Object { get; set; }43 internal override void OnMessage(string method, JsonElement? serverParams)44 {45 switch (method)46 {47 case "previewUpdated":48 PreviewUpdated?.Invoke(this, new() { Preview = serverParams.Value.GetProperty("preview").ToString() });49 break;50 }51 }52 internal Task<ElementHandleChannel> WaitForSelectorAsync(string selector, WaitForSelectorState? state, float? timeout, bool? strict)53 {54 var args = new Dictionary<string, object>55 {56 ["selector"] = selector,57 ["timeout"] = timeout,...
BrowserType.cs
Source:BrowserType.cs
...161 browser?.DidClose();162 connection.DoClose(closeError != null ? closeError : DriverMessages.BrowserClosedExceptionMessage);163 }164 pipe.Closed += (_, _) => OnPipeClosed();165 connection.OnMessage = async (object message) =>166 {167 try168 {169 await pipe.SendAsync(message).ConfigureAwait(false);170 }171 catch (Exception e) when (DriverMessages.IsSafeCloseError(e))172 {173 // swallow exception174 }175 catch176 {177 OnPipeClosed();178 }179 };...
ChannelBase.cs
Source:ChannelBase.cs
...32 Connection = connection;33 }34 public string Guid { get; }35 public Connection Connection { get; }36 internal virtual void OnMessage(string method, JsonElement? serverParams)37 {38 }39 }40}...
OnMessage
Using AI Code Generation
1using Microsoft.Playwright;2using Microsoft.Playwright.Transport.Channels;3using System;4using System.Collections.Generic;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 await using var browser = await playwright.Chromium.LaunchAsync();14 var page = await browser.NewPageAsync();15 await page.TypeAsync("input[title='Search']", "Playwright");16 await page.PressAsync("input[title='Search']", "Enter");17 await page.ScreenshotAsync(new PageScreenshotOptions { Path = "screenshot.png" });18 await page.WaitForLoadStateAsync(LoadState.NetworkIdle);19 await page.WaitForSelectorAsync("h3");20 await page.ClickAsync("h3");21 await page.ScreenshotAsync(new PageScreenshotOptions { Path = "screenshot2.png" });22 }23 }24}25using Microsoft.Playwright;26using Microsoft.Playwright.Transport.Channels;27using System;28using System.Collections.Generic;29using System.Linq;30using System.Text;31using System.Threading.Tasks;32{33 {34 static async Task Main(string[] args)35 {36 using var playwright = await Playwright.CreateAsync();37 await using var browser = await playwright.Chromium.LaunchAsync();38 var page = await browser.NewPageAsync();39 await page.TypeAsync("input[title='Search']", "Playwright");40 await page.PressAsync("input[title='Search']", "Enter");41 await page.ScreenshotAsync(new PageScreenshotOptions { Path = "screenshot.png" });42 await page.WaitForLoadStateAsync(LoadState.NetworkIdle);43 await page.WaitForSelectorAsync("h3");44 await page.ClickAsync("h3");45 await page.ScreenshotAsync(new PageScreenshotOptions { Path = "screenshot2.png" });46 }47 }48}49using Microsoft.Playwright;50using Microsoft.Playwright.Transport.Channels;51using System;52using System.Collections.Generic;
OnMessage
Using AI Code Generation
1using Microsoft.Playwright;2{3 {4 static async Task Main(string[] args)5 {6 await using var playwright = await Playwright.CreateAsync();7 await using var browser = await playwright.Chromium.LaunchAsync();8 await using var context = await browser.NewContextAsync();9 var page = await context.NewPageAsync();10 var element = await page.QuerySelectorAsync("input[name=q]");11 await element.TypeAsync("Hello World");12 var element2 = await page.QuerySelectorAsync("input[name=btnK]");13 await element2.ClickAsync();14 await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);15 await element3.ClickAsync();16 await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);17 await page.ScreenshotAsync("screenshot.png");18 }19 }20}21using Microsoft.Playwright;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 await using var context = await browser.NewContextAsync();29 var page = await context.NewPageAsync();30 var element = await page.QuerySelectorAsync("input[name=q]");31 await element.TypeAsync("Hello World");32 var element2 = await page.QuerySelectorAsync("input[name=btnK]");33 await element2.ClickAsync();34 await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);35 await element3.ClickAsync();36 await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);37 await page.ScreenshotAsync("screenshot.png");38 }39 }40}41using Microsoft.Playwright;42{43 {44 static async Task Main(string[] args)45 {
OnMessage
Using AI Code Generation
1{2 public static async Task Main(string[] args)3 {4 var playwright = await Playwright.CreateAsync();5 var browser = await playwright.Chromium.LaunchAsync();6 var page = await browser.NewPageAsync();7 await page.ScreenshotAsync("example.png");8 await browser.CloseAsync();9 }10}11{12 public static async Task Main(string[] args)13 {14 var playwright = await Playwright.CreateAsync();15 var browser = await playwright.Chromium.LaunchAsync();16 var page = await browser.NewPageAsync();17 await page.ScreenshotAsync("example.png");18 await browser.CloseAsync();19 }20}21{22 public static async Task Main(string[] args)23 {24 var playwright = await Playwright.CreateAsync();25 var browser = await playwright.Chromium.LaunchAsync();26 var page = await browser.NewPageAsync();27 await page.ScreenshotAsync("example.png");28 await browser.CloseAsync();29 }30}31{32 public static async Task Main(string[] args)33 {34 var playwright = await Playwright.CreateAsync();35 var browser = await playwright.Chromium.LaunchAsync();36 var page = await browser.NewPageAsync();37 await page.ScreenshotAsync("example.png");38 await browser.CloseAsync();39 }40}41{42 public static async Task Main(string[] args)43 {44 var playwright = await Playwright.CreateAsync();45 var browser = await playwright.Chromium.LaunchAsync();46 var page = await browser.NewPageAsync();
OnMessage
Using AI Code Generation
1using Microsoft.Playwright;2using Microsoft.Playwright.Transport.Channels;3using System;4using System.Collections.Generic;5using System.Linq;6using System.Reflection;7using System.Text;8using System.Threading.Tasks;9{10 {11 static async Task Main(string[] args)12 {13 using var playwright = await Playwright.CreateAsync();14 await using var browser = await playwright.Chromium.LaunchAsync();15 var page = await browser.NewPageAsync();16 var channel = page.Channel;17 var onMessageMethod = channel.GetType().GetMethod("OnMessage", BindingFlags.NonPublic | BindingFlags.Instance);18 channel.MessageReceived += (sender, e) => {19 Console.WriteLine(e.Message);20 };21 await page.EvaluateAsync(@"() => {22 const button = document.querySelector('button');23 button.addEventListener('click', () => {24 button.innerText = 'Clicked';25 });26 }");27 await page.ClickAsync("text=Get started");28 await Task.Delay(10000);29 }30 }31}
OnMessage
Using AI Code Generation
1ChannelBase channel = (ChannelBase)page;2channel.OnMessage += Channel_OnMessage;3PageChannel pageChannel = (PageChannel)page;4pageChannel.OnMessage += PageChannel_OnMessage;5PageChannel pageChannel = (PageChannel)page;6pageChannel.OnMessage += PageChannel_OnMessage;7PageChannel pageChannel = (PageChannel)page;8pageChannel.OnMessage += PageChannel_OnMessage;9PageChannel pageChannel = (PageChannel)page;10pageChannel.OnMessage += PageChannel_OnMessage;11PageChannel pageChannel = (PageChannel)page;12pageChannel.OnMessage += PageChannel_OnMessage;13PageChannel pageChannel = (PageChannel)page;14pageChannel.OnMessage += PageChannel_OnMessage;15PageChannel pageChannel = (PageChannel)page;16pageChannel.OnMessage += PageChannel_OnMessage;17PageChannel pageChannel = (PageChannel)page;18pageChannel.OnMessage += PageChannel_OnMessage;19PageChannel pageChannel = (PageChannel)page;20pageChannel.OnMessage += PageChannel_OnMessage;
OnMessage
Using AI Code Generation
1{2 using System;3 using System.Collections.Generic;4 using System.Diagnostics;5 using System.Linq;6 using System.Text.Json;7 using System.Threading;8 using System.Threading.Tasks;9 using Microsoft.Playwright.Core;10 using Microsoft.Playwright.Transport.Protocol;11 {12 private readonly Dictionary<string, object> _guidToChannel = new Dictionary<string, object>();13 private readonly Dictionary<Type, object> _guidToOwner = new Dictionary<Type, object>();14 private readonly Dictionary<string, object> _guidToType = new Dictionary<string, object>();15 private readonly List<ChannelBase> _objects = new List<ChannelBase>();16 private readonly List<ChannelOwnerBase> _owners = new List<ChannelOwnerBase>();17 private readonly List<ChannelBase> _parents = new List<ChannelBase>();18 private readonly List<ChannelBase> _children = new List<ChannelBase>();19 private readonly List<ChannelBase> _removedObjects = new List<ChannelBase>();20 private readonly Dictionary<string, TaskCompletionSource<ChannelBase>> _waitForObjectTasks = new Dictionary<string, TaskCompletionSource<ChannelBase>>();21 private Dictionary<string, TaskCompletionSource<ChannelBase>> _waitForObjectTasksCopy = new Dictionary<string, TaskCompletionSource<ChannelBase>>();22 private readonly Dictionary<string, TaskCompletionSource<ChannelBase>> _waitForOwnerTasks = new Dictionary<string, TaskCompletionSource<ChannelBase>>();23 private Dictionary<string, TaskCompletionSource<ChannelBase>> _waitForOwnerTasksCopy = new Dictionary<string, TaskCompletionSource<ChannelBase>>();24 private readonly Dictionary<string, TaskCompletionSource<ChannelBase>> _waitForTypeTasks = new Dictionary<string, TaskCompletionSource<ChannelBase>>();25 private Dictionary<string, TaskCompletionSource<ChannelBase>> _waitForTypeTasksCopy = new Dictionary<string, TaskCompletionSource<ChannelBase>>();26 private readonly Dictionary<string, TaskCompletionSource<ChannelBase>> _waitForParentTasks = new Dictionary<string, TaskCompletionSource<ChannelBase>>();27 private Dictionary<string, TaskCompletionSource<ChannelBase>> _waitForParentTasksCopy = new Dictionary<string, TaskCompletionSource<ChannelBase>>();
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.
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- 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.
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