How to use PrintError method of Microsoft.Playwright.Program class

Best Playwright-dotnet code snippet using Microsoft.Playwright.Program.PrintError

Program.cs

Source:Program.cs

...36                path = Path.Combine(Directory.GetCurrentDirectory(), args[1]);37                var isFile = File.Exists(path);38                if (!isFile && !Directory.Exists(path))39                {40                    return PrintError($"Couldn't find project using Playwright. Ensure a project or a solution exists in {path}, or provide another path using -p.");41                }42                if (isFile)43                {44                    path = Path.Combine(path, "..");45                }46                var argsCloned = new string[args.Length - 2];47                Array.Copy(args, 2, argsCloned, 0, args.Length - 2);48                args = argsCloned;49            }50            // Locating project is important, otherwise we are at risk51            // of traversing entire fs from root.52            if (File.GetAttributes(path).HasFlag(FileAttributes.Directory))53            {54                var solutions = Directory.GetFiles(path, "*.sln");55                var projects = Directory.GetFiles(path, "*.*proj");56                if (solutions.Length == 0 && projects.Length == 0)57                {58                    return PrintError($"Couldn't find project using Playwright. Ensure a project or a solution exists in {path}, or provide another path using -p.");59                }60            }61            var file = Traverse(new(path));62            if (string.IsNullOrEmpty(file))63            {64                return PrintError(@"Please make sure Playwright is installed and built prior to using Playwright tool:65   dotnet add package Microsoft.Playwright66   dotnet build");67            }68            // Only Microsoft.Playwright.Program::Run knows how to run the driver.69            // Each version of Microsoft.Playwright has its own way and we must70            // delegate to it.71            var dll = Assembly.LoadFile(file);72            dynamic c = dll.CreateInstance("Microsoft.Playwright.Program");73            return c.Run(args);74        }75        private static string Traverse(DirectoryInfo root)76        {77            foreach (var dir in root.EnumerateDirectories())78            {79                var candidate = Path.Combine(dir.ToString(), "Microsoft.Playwright.dll");80                if (File.Exists(candidate))81                {82                    return candidate;83                }84                string result = Traverse(dir);85                if (!string.IsNullOrEmpty(result))86                {87                    return result;88                }89            }90            return null;91        }92        private static int PrintError(string error)93        {94            Console.Error.WriteLine("\x1b[91m" + error + "\x1b[0m");95            return 1;96        }97    }98}...

PrintError

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 BrowserTypeLaunchOptions { Headless = false });10            var context = await browser.NewContextAsync();11            var page = await context.NewPageAsync();12            await page.ClickAsync("text=Images");13            await page.ClickAsync("text=Videos");14            await page.ClickAsync("text=News");15            await page.ClickAsync("text=Shopping");16            await page.ClickAsync("text=Maps");17            await page.ClickAsync("text=Books");

PrintError

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.ScreenshotAsync("example.png");12            await browser.CloseAsync();13        }14    }15}

PrintError

Using AI Code Generation

1using Microsoft.Playwright;2var playwright = await Playwright.CreateAsync();3var browser = await playwright.Chromium.LaunchAsync();4var page = await browser.NewPageAsync();5await page.ScreenshotAsync(new PageScreenshotOptions6{7});8await browser.CloseAsync();9Microsoft.Playwright.Program.PrintError();10await playwright.StopAsync();11I have also tried to use the Microsoft.Playwright.Program.PrintError() method in the following manner:12using Microsoft.Playwright;13var playwright = await Playwright.CreateAsync();14var browser = await playwright.Chromium.LaunchAsync();15var page = await browser.NewPageAsync();16await page.ScreenshotAsync(new PageScreenshotOptions17{18});19await browser.CloseAsync();20Microsoft.Playwright.Program.PrintError();21await playwright.StopAsync();22Is there a way to use the Microsoft.Playwright.Program.PrintError() method in a .NET Core console application?23using System;24using System.Diagnostics;25using System.IO;26{27    static void Main(string[] args)28    {29        Process process = new Process();30        process.StartInfo.FileName = "dotnet";31        process.StartInfo.Arguments = "run";32        process.StartInfo.WorkingDirectory = @"C:\Users\user\source\repos\ConsoleApplication1\ConsoleApplication1";33        process.StartInfo.UseShellExecute = false;34        process.StartInfo.CreateNoWindow = true;35        process.StartInfo.RedirectStandardOutput = true;36        process.StartInfo.RedirectStandardError = true;37        process.OutputDataReceived += new DataReceivedEventHandler((sender, e) => Console.WriteLine(e.Data));38        process.ErrorDataReceived += new DataReceivedEventHandler((sender, e

PrintError

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();10            var page = await browser.NewPageAsync();11            await page.ClickAsync("text=Get started");12            await page.ClickAsync("text=Docs");

PrintError

Using AI Code Generation

1using System;2using Microsoft.Playwright;3{4    {5        static async Task Main(string[] args)6        {7            using var playwright = await Playwright.CreateAsync();8            var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions9            {10            });11            var page = await browser.NewPageAsync();12            await page.ScreenshotAsync(new PageScreenshotOptions13            {14            });15            await browser.CloseAsync();16        }17    }18}19using System;20using Microsoft.Playwright;21{22    {23        static async Task Main(string[] args)24        {25            using var playwright = await Playwright.CreateAsync();26            var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions27            {28            });29            var page = await browser.NewPageAsync();30            await page.ScreenshotAsync(new PageScreenshotOptions31            {32            });33            await browser.CloseAsync();34        }35    }36}37using System;38using Microsoft.Playwright;39{40    {41        static async Task Main(string[] args)42        {43            using var playwright = await Playwright.CreateAsync();44            var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions45            {46            });47            var page = await browser.NewPageAsync();48            await page.ScreenshotAsync(new PageScreenshotOptions49            {50            });51            await browser.CloseAsync();52        }53    }54}55using System;56using Microsoft.Playwright;57{58    {59        static async Task Main(string[] args)60        {61            using var playwright = await Playwright.CreateAsync();

PrintError

Using AI Code Generation

1using System;2using Microsoft.Playwright;3using Microsoft.Playwright.Program;4{5    public static async Task Main()6    {7        var playwright = await Playwright.CreateAsync();8        var browser = await playwright.Chromium.LaunchAsync();9        var page = await browser.NewPageAsync();10        await page.ClickAsync("input[title='Search']");11        await PrintError(page, "Test Error");12        await browser.CloseAsync();13    }14}15using System;16using Microsoft.Playwright;17using Microsoft.Playwright.Program;18{19    public static async Task Main()20    {21        var playwright = await Playwright.CreateAsync();22        var browser = await playwright.Chromium.LaunchAsync();23        var page = await browser.NewPageAsync();24        await page.ClickAsync("input[title='Search']");25        await PrintError(page, "Test Error");26        await browser.CloseAsync();27    }28}29using System;30using Microsoft.Playwright;31using Microsoft.Playwright.Program;32{33    public static async Task Main()34    {35        var playwright = await Playwright.CreateAsync();36        var browser = await playwright.Chromium.LaunchAsync();37        var page = await browser.NewPageAsync();38        await page.ClickAsync("input[title='Search']");39        await PrintError(page, "Test Error");40        await browser.CloseAsync();41    }42}43using System;44using Microsoft.Playwright;45using Microsoft.Playwright.Program;

PrintError

Using AI Code Generation

1using Microsoft.Playwright;2using System;3{4    {5        static void Main(string[] args)6        {7            Console.WriteLine("Hello World!");8        }9    }10}11using Microsoft.Playwright;12using System;13{14    {15        static void Main(string[] args)16        {17            Console.WriteLine("Hello World!");18        }19    }20}21using Microsoft.Playwright;22using System;23{24    {25        static void Main(string[] args)26        {27            Console.WriteLine("Hello World!");28        }29    }30}31using Microsoft.Playwright;32using System;33{34    {35        static void Main(string[] args)36        {37            Console.WriteLine("Hello World!");38        }39    }40}41using Microsoft.Playwright;42using System;43{44    {45        static void Main(string[] args)46        {47            Console.WriteLine("Hello World!");48        }49    }50}51using Microsoft.Playwright;52using System;53{54    {55        static void Main(string[] args)56        {57            Console.WriteLine("Hello World!");58        }59    }60}61using Microsoft.Playwright;62using System;63{64    {65        static void Main(string[] args)66        {67            Console.WriteLine("Hello World!");68        }69    }70}71using Microsoft.Playwright;72using System;73{74    {75        static void Main(string[] args)76        {77            Console.WriteLine("Hello World!");78        }79    }80}

PrintError

Using AI Code Generation

1using System;2using System.Reflection;3using Microsoft.Playwright;4{5    {6        public static void Main(string[] args)7        {8            var method = typeof(Microsoft.Playwright.Program).GetMethod("PrintError", BindingFlags.NonPublic | BindingFlags.Static);9            method.Invoke(null, new object[] { "This is my custom error message" });10        }11    }12}

PrintError

Using AI Code Generation

1using Microsoft.Playwright;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            var playwright = await Playwright.CreateAsync();9            var browser = await playwright.Firefox.LaunchAsync(new BrowserTypeLaunchOptions10            {11            });12            var context = await browser.NewContextAsync();13            var page = await context.NewPageAsync();14            await page.ScreenshotAsync("example.png");15            await browser.CloseAsync();16        }17    }18}

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.