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How to use Seek method of Microsoft.Playwright.Core.WritableStream class

Best Playwright-dotnet code snippet using Microsoft.Playwright.Core.WritableStream.Seek

WritableStream.cs

Source:WritableStream.cs

...50        {51            _stream = stream;52        }53        public override bool CanRead => throw new NotImplementedException();54        public override bool CanSeek => throw new NotImplementedException();55        public override bool CanWrite => true;56        public override long Length => throw new NotImplementedException();57        public override long Position { get => throw new NotImplementedException(); set => throw new NotImplementedException(); }58        public override void Flush() => throw new NotImplementedException();59        public override int Read(byte[] buffer, int offset, int count) => throw new NotImplementedException();60        public override Task<int> ReadAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken) =>61            throw new NotImplementedException();62        public override void Close() => _stream.CloseAsync().ConfigureAwait(false);63        public override long Seek(long offset, SeekOrigin origin) => throw new NotImplementedException();64        public override void SetLength(long value) => throw new NotImplementedException();65        public override void Write(byte[] buffer, int offset, int count) => throw new NotImplementedException();66        public override async Task WriteAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)67        {68            await this._stream.WriteAsync(Convert.ToBase64String(buffer)).ConfigureAwait(false);69        }70    }71}...

Seek

Using AI Code Generation

1using System;2using System.IO;3using System.Threading.Tasks;4using Microsoft.Playwright;5{6    {7        static async Task Main(string[] args)8        {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 stream = await response.BodyAsync();15            var fileStream = new FileStream("test.txt", FileMode.Create);16            await stream.SeekAsync(0);17            await stream.CopyToAsync(fileStream);18        }19    }20}

Seek

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();10            var page = await browser.NewPageAsync();11            await page.ClickAsync("text=Download");12            var download = await page.WaitForEventAsync(PageEvent.Download);13            await download.SaveAsAsync(@"C:\Users\Downloads\file.txt");14        }15    }16}17using Microsoft.Playwright;18using System;19using System.Threading.Tasks;20{21    {22        static async Task Main(string[] args)23        {24            await using var playwright = await Playwright.CreateAsync();25            await using var browser = await playwright.Chromium.LaunchAsync();26            var page = await browser.NewPageAsync();27            await page.ClickAsync("text=Download");28            var download = await page.WaitForEventAsync(PageEvent.Download);29            await download.SaveAsAsync(@"C:\Users\Downloads\file.txt");30            await download.CloseAsync();31        }32    }33}34using Microsoft.Playwright;35using System;36using System.Threading.Tasks;37{38    {39        static async Task Main(string[] args)40        {41            await using var playwright = await Playwright.CreateAsync();42            await using var browser = await playwright.Chromium.LaunchAsync();43            var page = await browser.NewPageAsync();44            await page.ClickAsync("text=Download");45            var download = await page.WaitForEventAsync(PageEvent.Download);46            await download.SaveAsAsync(@"C:\Users\Downloads\file.txt");47            await download.CloseAsync();48            await download.DisposeAsync();49        }50    }51}52using Microsoft.Playwright;53using System;54using System.Threading.Tasks;55{

Seek

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            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions { Headless = false });11            var page = await browser.NewPageAsync();12            var input = await page.QuerySelectorAsync("input[title='Search']");13            await input.TypeAsync("Hello World");14            var stream = new WritableStream();15            await input.FocusAsync();16            await page.Keyboard.DownAsync("Shift");17            await input.PressAsync("ArrowLeft");

Seek

Using AI Code Generation

1{2    {3        static async Task Main(string[] args)4        {5            using var playwright = await Playwright.CreateAsync();6            var browser = await playwright.Chromium.LaunchAsync(headless: false);7            var page = await browser.NewPageAsync();8            await page.SwitchToFrameAsync("iframeResult");9            await page.SetInputFilesAsync("input[type='file']", "C:\\Users\\user\\Desktop\\test.txt");10            await page.ClickAsync("input[type='submit']");11            await page.WaitForSelectorAsync("h2");12            var text = await page.TextContentAsync("h2");13            Console.WriteLine(text);14            await browser.CloseAsync();15        }16    }17}

Seek

Using AI Code Generation

1using Microsoft.Playwright.Core;2using System;3using System.IO;4using System.Text;5using System.Threading.Tasks;6{7    {8        static async Task Main(string[] args)9        {10            var path = Path.Combine(Directory.GetCurrentDirectory(), "test.txt");11            var file = File.Open(path, FileMode.OpenOrCreate);12            var writer = new StreamWriter(file);13            await writer.WriteLineAsync("Test");14            await writer.FlushAsync();15            file.Seek(0, SeekOrigin.Begin);16            var reader = new StreamReader(file);17            var text = await reader.ReadToEndAsync();18            Console.WriteLine(text);19            await file.CloseAsync();20        }21    }22}

Seek

Using AI Code Generation

1var browser = await Playwright.CreateAsync().Chromium.LaunchAsync();2var page = await browser.NewPageAsync();3var stream = await page.OpenAsync();4await stream.SeekAsync(0, SeekOrigin.Begin);5await stream.CloseAsync();6await browser.CloseAsync();7var browser = await Playwright.CreateAsync().Chromium.LaunchAsync();8var page = await browser.NewPageAsync();9var stream = await page.OpenAsync();10await stream.SetEncodingAsync(Encoding.UTF8);11await stream.CloseAsync();12await browser.CloseAsync();13var browser = await Playwright.CreateAsync().Chromium.LaunchAsync();14var page = await browser.NewPageAsync();15var stream = await page.OpenAsync();16await stream.WriteAsync("Write method");17await stream.CloseAsync();18await browser.CloseAsync();19var browser = await Playwright.CreateAsync().Chromium.LaunchAsync();20var page = await browser.NewPageAsync();21var stream = await page.OpenAsync();22await stream.WriteAsync("WriteAsync method");23await stream.CloseAsync();24await browser.CloseAsync();25var browser = await Playwright.CreateAsync().Chromium.LaunchAsync();26var page = await browser.NewPageAsync();27var stream = await page.OpenAsync();28await stream.WriteLineAsync("WriteLine method");29await stream.CloseAsync();30await browser.CloseAsync();31var browser = await Playwright.CreateAsync().Chromium.LaunchAsync();32var page = await browser.NewPageAsync();33var stream = await page.OpenAsync();34await stream.WriteLineAsync("WriteLineAsync method");35await stream.CloseAsync();

Seek

Using AI Code Generation

1using Microsoft.Playwright;2using System;3using System.IO;4using System.Threading.Tasks;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(new BrowserTypeLaunchOptions11            {12            });13            var page = await browser.NewPageAsync();14            var stream = new FileStream("output.txt", FileMode.Create);15            var writableStream = await page.OpenAsync();16            await writableStream.SeekAsync(0);17            await writableStream.WriteAsync("Hello World");18            await writableStream.CloseAsync();19            await browser.CloseAsync();20        }21    }22}23using Microsoft.Playwright;24using System;25using System.IO;26using System.Threading.Tasks;27{28    {29        static async Task Main(string[] args)30        {31            await using var playwright = await Playwright.CreateAsync();32            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions33            {34            });35            var page = await browser.NewPageAsync();36            var stream = new FileStream("output.txt", FileMode.Create);37            var writableStream = await page.OpenAsync();38            await writableStream.SeekAsync(0);39            await writableStream.WriteAsync("Hello World");40            await writableStream.CloseAsync();41            await browser.CloseAsync();42        }43    }44}45using Microsoft.Playwright;46using System;47using System.IO;48using System.Threading.Tasks;49{50    {51        static async Task Main(string[] args)52        {53            await using var playwright = await Playwright.CreateAsync();54            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions55            {56            });57            var page = await browser.NewPageAsync();

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.