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How to use ExposeFunctionAsync method of Microsoft.Playwright.Core.BrowserContext class
Best Playwright-dotnet code snippet using Microsoft.Playwright.Core.BrowserContext.ExposeFunctionAsync
Page.cs
Source:Page.cs 
...551 public Task ExposeBindingAsync<T1, T2, T3, TResult>(string name, Func<BindingSource, T1, T2, T3, TResult> callback)552 => InnerExposeBindingAsync(name, (Delegate)callback);553 public Task ExposeBindingAsync<T1, T2, T3, T4, TResult>(string name, Func<BindingSource, T1, T2, T3, T4, TResult> callback)554 => InnerExposeBindingAsync(name, (Delegate)callback);555 public Task ExposeFunctionAsync(string name, Action callback)556 => ExposeBindingAsync(name, (BindingSource _) => callback());557 public Task ExposeFunctionAsync<T>(string name, Action<T> callback)558 => ExposeBindingAsync(name, (BindingSource _, T t) => callback(t));559 public Task ExposeFunctionAsync<TResult>(string name, Func<TResult> callback)560 => ExposeBindingAsync(name, (BindingSource _) => callback());561 public Task ExposeFunctionAsync<T, TResult>(string name, Func<T, TResult> callback)562 => ExposeBindingAsync(name, (BindingSource _, T t) => callback(t));563 public Task ExposeFunctionAsync<T1, T2, TResult>(string name, Func<T1, T2, TResult> callback)564 => ExposeBindingAsync(name, (BindingSource _, T1 t1, T2 t2) => callback(t1, t2));565 public Task ExposeFunctionAsync<T1, T2, T3, TResult>(string name, Func<T1, T2, T3, TResult> callback)566 => ExposeBindingAsync(name, (BindingSource _, T1 t1, T2 t2, T3 t3) => callback(t1, t2, t3));567 public Task ExposeFunctionAsync<T1, T2, T3, T4, TResult>(string name, Func<T1, T2, T3, T4, TResult> callback)568 => ExposeBindingAsync(name, (BindingSource _, T1 t1, T2 t2, T3 t3, T4 t4) => callback(t1, t2, t3, t4));569 public async Task<byte[]> PdfAsync(PagePdfOptions options = default)570 {571 if (!Context.IsChromium)572 {573 throw new NotSupportedException("This browser doesn't support this action.");574 }575 byte[] result = await _channel.PdfAsync(576 scale: options?.Scale,577 displayHeaderFooter: options?.DisplayHeaderFooter,578 headerTemplate: options?.HeaderTemplate,579 footerTemplate: options?.FooterTemplate,580 printBackground: options?.PrintBackground,581 landscape: options?.Landscape,...
BrowserContext.cs
Source:BrowserContext.cs
...168 public Task ExposeBindingAsync<T1, T2, T3, TResult>(string name, Func<BindingSource, T1, T2, T3, TResult> callback)169 => ExposeBindingAsync(name, (Delegate)callback);170 public Task ExposeBindingAsync<T1, T2, T3, T4, TResult>(string name, Func<BindingSource, T1, T2, T3, T4, TResult> callback)171 => ExposeBindingAsync(name, (Delegate)callback);172 public Task ExposeFunctionAsync(string name, Action callback)173 => ExposeBindingAsync(name, (BindingSource _) => callback());174 public Task ExposeFunctionAsync<T>(string name, Action<T> callback)175 => ExposeBindingAsync(name, (BindingSource _, T t) => callback(t));176 public Task ExposeFunctionAsync<TResult>(string name, Func<TResult> callback)177 => ExposeBindingAsync(name, (BindingSource _) => callback());178 public Task ExposeFunctionAsync<T, TResult>(string name, Func<T, TResult> callback)179 => ExposeBindingAsync(name, (BindingSource _, T t) => callback(t));180 public Task ExposeFunctionAsync<T1, T2, TResult>(string name, Func<T1, T2, TResult> callback)181 => ExposeBindingAsync(name, (BindingSource _, T1 t1, T2 t2) => callback(t1, t2));182 public Task ExposeFunctionAsync<T1, T2, T3, TResult>(string name, Func<T1, T2, T3, TResult> callback)183 => ExposeBindingAsync(name, (BindingSource _, T1 t1, T2 t2, T3 t3) => callback(t1, t2, t3));184 public Task ExposeFunctionAsync<T1, T2, T3, T4, TResult>(string name, Func<T1, T2, T3, T4, TResult> callback)185 => ExposeBindingAsync(name, (BindingSource _, T1 t1, T2 t2, T3 t3, T4 t4) => callback(t1, t2, t3, t4));186 public Task GrantPermissionsAsync(IEnumerable<string> permissions, BrowserContextGrantPermissionsOptions options = default)187 => Channel.GrantPermissionsAsync(permissions, options?.Origin);188 public async Task<IPage> NewPageAsync()189 {190 if (OwnerPage != null)191 {192 throw new PlaywrightException("Please use Browser.NewContextAsync()");193 }194 return (await Channel.NewPageAsync().ConfigureAwait(false)).Object;195 }196 public Task RouteAsync(string url, Action<IRoute> handler, BrowserContextRouteOptions options = default)197 => RouteAsync(new Regex(CombineUrlWithBase(url).GlobToRegex()), null, handler, options);198 public Task RouteAsync(Regex url, Action<IRoute> handler, BrowserContextRouteOptions options = default)...
ExposeFunctionAsync
Using AI Code Generation
1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;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();10 var context = await browser.NewContextAsync();11 await context.ExposeFunctionAsync("myFunction", (string arg) => Console.WriteLine(arg));12 var page = await context.NewPageAsync();13 await page.EvaluateAsync(@"() => {14 myFunction('Hello from Playwright');15 }");16 }17 }18}19Related posts: How to use the setDefaultNavigationTimeout() method of the Microsoft.Playwright.Core.BrowserContext class in C# How to use the setDefaultTimeout() method of the Microsoft.Playwright.Core.BrowserContext class in C# How to use the setGeolocation() method of the Microsoft.Playwright.Core.BrowserContext class in C# How to use the setHTTPCredentials() method of the Microsoft.Playwright.Core.BrowserContext class in C# How to use the setNetworkInterceptionEnabled() method of the Microsoft.Playwright.Core.BrowserContext class in C# How to use the setOffline() method of the Microsoft.Playwright.Core.BrowserContext class in C# How to use the setPermissions() method of the Microsoft.Playwright.Core.BrowserContext class in C# How to use the set
ExposeFunctionAsync
Using AI Code Generation
1var browser = await Playwright.CreateAsync().Chromium.LaunchAsync(new LaunchOptions { Headless = false });2 var context = await browser.NewContextAsync();3 var page = await context.NewPageAsync();4await page.ExposeFunctionAsync( "add" , ( int a, int b) => a + b);5 var result = await page.EvaluateAsync< int >( "add(5, 6)" );6Console.WriteLine(result);7 await browser.CloseAsync();8var browser = await Playwright.CreateAsync().Chromium.LaunchAsync(new LaunchOptions { Headless = false });9 var context = await browser.NewContextAsync();10 var page = await context.NewPageAsync();11await page.ExposeFunctionAsync( "add" , ( int a, int b) => a + b);12 var result = await page.EvaluateAsync< int >( "add(5, 6)" );13Console.WriteLine(result);14 await browser.CloseAsync();15var browser = await Playwright.CreateAsync().Chromium.LaunchAsync(new LaunchOptions { Headless = false });16 var context = await browser.NewContextAsync();17 var page = await context.NewPageAsync();18await page.ExposeFunctionAsync( "add" , ( int a, int b) => a + b);19 var result = await page.EvaluateAsync< int >( "add(5, 6)" );20Console.WriteLine(result);21 await browser.CloseAsync();22var browser = await Playwright.CreateAsync().Chromium.LaunchAsync(new LaunchOptions { Headless = false
ExposeFunctionAsync
Using AI Code Generation
1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;4using Microsoft.Playwright.Core;5using Microsoft.Playwright.Transport;6using Microsoft.Playwright.Transport.Channels;7using Microsoft.Playwright.Transport.Protocol;8{9 {10 static async Task Main(string[] args)11 {12 var playwright = await Playwright.CreateAsync();13 var browser = await playwright.Chromium.LaunchAsync();14 var context = await browser.NewContextAsync();15 var page = await context.NewPageAsync();16 await context.ExposeFunctionAsync("myFunction", (string arg) =>17 {18 Console.WriteLine(arg);19 return "Hello from myFunction";20 });21 var result = await page.EvaluateAsync<string>("() => myFunction('Hello')");22 Console.WriteLine(result);23 await browser.CloseAsync();24 }25 }26}27using System;28using System.Threading.Tasks;29using Microsoft.Playwright;30using Microsoft.Playwright.Core;31using Microsoft.Playwright.Transport;32using Microsoft.Playwright.Transport.Channels;33using Microsoft.Playwright.Transport.Protocol;34{35 {36 static async Task Main(string[] args)37 {38 var playwright = await Playwright.CreateAsync();39 var browser = await playwright.Chromium.LaunchAsync();40 var context = await browser.NewContextAsync();41 var page = await context.NewPageAsync();42 await page.ExposeBindingAsync("myFunction", (string arg) =>43 {44 Console.WriteLine(arg);45 return "Hello from myFunction";46 });47 var result = await page.EvaluateAsync<string>("() => myFunction('Hello')");48 Console.WriteLine(result);49 await browser.CloseAsync();50 }51 }52}53using System;54using System.Threading.Tasks;55using Microsoft.Playwright;56using Microsoft.Playwright.Core;57using Microsoft.Playwright.Transport;58using Microsoft.Playwright.Transport.Channels;59using Microsoft.Playwright.Transport.Protocol;
ExposeFunctionAsync
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 var browser = await playwright.Chromium.LaunchAsync();10 var page = await browser.NewPageAsync();11 await page.ExposeFunctionAsync("add", (int a, int b) => a + b);12 await page.ExposeBindingAsync("multiply", (BindingSource source, int a, int b) => a * b);13 var result = await page.EvaluateAsync<int>("async() => {return await add(5, 6);}");14 Console.WriteLine(result);15 var result1 = await page.EvaluateAsync<int>("async() => {return await multiply(5, 6);}");16 Console.WriteLine(result1);17 }18 }19}
ExposeFunctionAsync
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 var playwright = await Playwright.CreateAsync();12 var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions13 {14 });15 var context = await browser.NewContextAsync(new BrowserNewContextOptions16 {17 });18 var page = await context.NewPageAsync();19 await page.ExposeFunctionAsync("sum", (int a, int b) => a + b);20 int result = await page.EvaluateAsync<int>("sum(5, 6)");21 Console.WriteLine(result);22 await browser.CloseAsync();23 }24 }25}26using Microsoft.Playwright;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 var playwright = await Playwright.CreateAsync();37 var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions38 {39 });40 var context = await browser.NewContextAsync(new BrowserNewContextOptions41 {42 });43 var page = await context.NewPageAsync();44 await page.ExposeBindingAsync("sum", (BindingSource source, int a, int b) => a + b);45 int result = await page.EvaluateAsync<int>("sum(5, 6)");46 Console.WriteLine(result);47 await browser.CloseAsync();48 }49 }50}51using Microsoft.Playwright;52using System;53using System.Collections.Generic;54using System.Linq;55using System.Text;
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.
- 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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Most used method in BrowserContext
- AddCookiesAsync
- AddInitScriptAsync
- ClearCookiesAsync
- ClearPermissionsAsync
- CloseAsync
- CookiesAsync
- ExposeBindingAsync
- TResult
- ExposeFunctionAsync
- GrantPermissionsAsync
- NewPageAsync
- RouteAsync
- SetExtraHTTPHeadersAsync
- SetGeolocationAsync
- SetOfflineAsync
- StorageStateAsync
- UnrouteAsync
- InnerWaitForEventAsync
- WaitForPageAsync
- RunAndWaitForPageAsync
- DisposeAsync
- SetDefaultNavigationTimeout
- SetDefaultTimeout
- OnRoute
- UrlMatches
- OnClose
- ChannelOnPage
- ChannelBindingCall
- ChannelRoute
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