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

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

WritableStream.cs

Source:WritableStream.cs

...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}...

Flush

Using AI Code Generation

1using Microsoft.Playwright;2using System.Threading.Tasks;3{4    {5        static async Task Main(string[] args)6        {7            using var playwright = await Playwright.CreateAsync();8            await using var browser = await playwright.Chromium.LaunchAsync();9            var page = await browser.NewPageAsync();10            var request = page.WaitForRequestAsync("**/*");11            await page.FillAsync("input[name=q]", "test");12            await page.PressAsync("input[name=q]", "Enter");13            await request;14            await page.ClickAsync("text=Images");15            var response = page.WaitForResponseAsync("**/*");16            var element = await page.QuerySelectorAsync("input[name=q]");17            await element.FocusAsync();18            await element.TypeAsync("Playwright");19            await element.PressAsync("Enter");20            await response;21            var image = await page.QuerySelectorAsync("img[src]");22            var imgSrc = await image.GetAttributeAsync("src");23            var request1 = page.WaitForRequestAsync("**/*");24            await page.GotoAsync(imgSrc);25            await request1;26            await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);27            var response1 = page.WaitForResponseAsync("**/*");28            await page.ClickAsync("text=Download image");29            await response1;30            var download = await page.WaitForEventAsync(PageEvent.Download);31            var downloadPath = @"C:\Users\Downloads\";32            var downloadStream = await download.CreateReadStreamAsync();33            var writeStream = System.IO.File.Create(downloadPath + download.SuggestedFilename);34            await downloadStream.CopyToAsync(writeStream);35            await downloadStream.FlushAsync();36            await writeStream.FlushAsync();37            await writeStream.DisposeAsync();38            await downloadStream.DisposeAsync();39        }40    }41}

Flush

Using AI Code Generation

1using Microsoft.Playwright;2using System.Threading.Tasks;3{4    {5        static async Task Main(string[] args)6        {7            using var playwright = await Playwright.CreateAsync();8            await using var browser = await playwright.Chromium.LaunchAsync();9            var page = await browser.NewPageAsync();10            page.Keyboard.Type("Hello world!");11            await page.Keyboard.FlushAsync();12        }13    }14}15using Microsoft.Playwright;16using System.Threading.Tasks;17{18    {19        static async Task Main(string[] args)20        {21            using var playwright = await Playwright.CreateAsync();22            await using var browser = await playwright.Chromium.LaunchAsync();23            var page = await browser.NewPageAsync();24            page.Keyboard.Type("Hello world!");25            await page.Keyboard.FlushAsync();26        }27    }28}29using Microsoft.Playwright;30using System.Threading.Tasks;31{32    {33        static async Task Main(string[] args)34        {35            using var playwright = await Playwright.CreateAsync();36            await using var browser = await playwright.Chromium.LaunchAsync();37            var page = await browser.NewPageAsync();38            page.Keyboard.Type("Hello world!");39            await page.Keyboard.FlushAsync();40        }41    }42}43using Microsoft.Playwright;44using System.Threading.Tasks;45{46    {47        static async Task Main(string[] args)48        {49            using var playwright = await Playwright.CreateAsync();50            await using var browser = await playwright.Chromium.LaunchAsync();51            var page = await browser.NewPageAsync();52            page.Keyboard.Type("Hello world!");53            await page.Keyboard.FlushAsync();54        }55    }56}57using Microsoft.Playwright;

Flush

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 LaunchOptions { Headless = false });11            var context = await browser.NewContextAsync();12            var page = await context.NewPageAsync();13            var newPage = await context.NewPageAsync();14            var pages = await context.PagesAsync();15            foreach (var page in pages)16            {17                var request = await page.WaitForRequestAsync("**/*.png");18                var response = request.Response;19                var stream = await response.BodyAsync();20                var bytes = await stream.ReadAsync();21                await File.WriteAllBytesAsync("test.png", bytes);22                await stream.FlushAsync();23            }24            await browser.CloseAsync();25        }26    }27}28In the above code, the method used is ReadAsync() which reads the response body and returns the result as a byte array. This method is used to read a small file. If the file is large, then the method ReadAsync() will take a lot of time to complete the operation. So, to improve the performance, we can use the method ReadAsync() which reads the response body

Flush

Using AI Code Generation

1using System;2using Microsoft.Playwright;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 context = await browser.NewContextAsync();11            var page = await context.NewPageAsync();12            var handle = await page.QuerySelectorAsync("input[title='Search']");13            var element = (IElementHandle)handle;14            await element.FocusAsync();15            await element.TypeAsync("Hello World");16            await element.PressAsync("Enter");17            await element.ScreenshotAsync("search.png");18            var stream = await element.ScreenshotStreamAsync();19            await stream.FlushAsync();20            await context.CloseAsync();21            await browser.CloseAsync();22        }23    }24}25using System;26using Microsoft.Playwright;27using System.Threading.Tasks;28{29    {30        static async Task Main(string[] args)31        {32            await using var playwright = await Playwright.CreateAsync();33            await using var browser = await playwright.Chromium.LaunchAsync();34            var context = await browser.NewContextAsync();35            var page = await context.NewPageAsync();36            await page.WaitForEventAsync(PageEvent.Load);37            await context.CloseAsync();38            await browser.CloseAsync();39        }40    }41}42using System;43using Microsoft.Playwright;44using System.Threading.Tasks;45{46    {47        static async Task Main(string[] args)48        {49            await using var playwright = await Playwright.CreateAsync();50            await using var browser = await playwright.Chromium.LaunchAsync();51            var context = await browser.NewContextAsync();52            var page = await context.NewPageAsync();53            await page.WaitForEventAsync(PageEvent.Load);54            await context.CloseAsync();55            await browser.CloseAsync();56        }57    }58}

Flush

Using AI Code Generation

1using System;2using System.IO;3using Microsoft.Playwright;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 = File.OpenWrite("output.pdf");15            await page.PdfAsync(new PagePdfOptions16            {17            });18            await stream.FlushAsync();19            await stream.DisposeAsync();20        }21    }22}23using System;24using System.IO;25using Microsoft.Playwright;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 = File.OpenWrite("output.pdf");37            await page.PdfAsync(new PagePdfOptions38            {39            });40            await stream.FlushAsync();41            await stream.DisposeAsync();42        }43    }44}45using System;46using System.IO;47using Microsoft.Playwright;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();58            var stream = File.OpenWrite("output.pdf");59            await page.PdfAsync(new PagePdfOptions60            {61            });

Flush

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;4using Microsoft.Playwright.Core;5using Microsoft.Playwright.Transport.Channels;6using Microsoft.Playwright.Transport.Protocol;7{8    {9        static async Task Main(string[] args)10        {11            using var playwright = await Playwright.CreateAsync();12            var browser = await playwright.Firefox.LaunchAsync(headless: false);13            var page = await browser.NewPageAsync();14            var request = await page.WaitForRequestAsync("**/*");15            var response = request.Response;16            var body = response.Body;17            var stream = body.Readable;18            var reader = stream.GetReader();19            var writer = stream.GetWriter();20            var page1 = await browser.NewPageAsync();21            var request1 = await page1.WaitForRequestAsync("**/*");22            var response1 = request1.Response;23            var body1 = response1.Body;24            var stream1 = body1.Readable;25            var reader1 = stream1.GetReader();26            var writer1 = stream1.GetWriter();27            var page2 = await browser.NewPageAsync();28            var request2 = await page2.WaitForRequestAsync("**/*");29            var response2 = request2.Response;30            var body2 = response2.Body;31            var stream2 = body2.Readable;32            var reader2 = stream2.GetReader();33            var writer2 = stream2.GetWriter();34            await writer.WriteAsync(Encoding.UTF8.GetBytes("Hello World!"));35            await writer.FlushAsync();36            await writer1.WriteAsync(Encoding.UTF8.GetBytes("Hello World!"));37            await writer1.FlushAsync();38            await writer2.WriteAsync(Encoding.UTF8.GetBytes("Hello World!"));39            await writer2.FlushAsync();40            await writer.CloseAsync();41            await writer1.CloseAsync();42            await writer2.CloseAsync();43        }44    }45}

Flush

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;4{5    static async Task Main(string[] args)6    {7        using var playwright = await Playwright.CreateAsync();8        await using var browser = await playwright.Chromium.LaunchAsync(new()9        {10        });11        var context = await browser.NewContextAsync();12        var page = await context.NewPageAsync();13        await page.PressAsync("input[title='Search']", "ArrowDown");14        await page.PressAsync("input[title='Search']", "Enter");15        await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);16        await page.ScreenshotAsync(new()17        {18        });19    }20}21using System;22using System.Threading.Tasks;23using Microsoft.Playwright;24{25    static async Task Main(string[] args)26    {27        using var playwright = await Playwright.CreateAsync();28        await using var browser = await playwright.Chromium.LaunchAsync(new()29        {30        });31        var context = await browser.NewContextAsync();32        var page = await context.NewPageAsync();33        await page.PressAsync("input[title='Search']", "ArrowDown");34        await page.PressAsync("input[title='Search']", "Enter");35        await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);36        await page.ScreenshotAsync(new()37        {38        });39    }40}

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.