playwright/docs/src/intro-csharp.md

id	title
intro	Getting Started

• Release notes

Installation

Start with installing playwright dotnet tool globally. This only needs to be done once. Learn more about Playwright CLI tool.

dotnet tool install --global Microsoft.Playwright.CLI

First project

Create a console project and add the Playwright dependency.

# Create project
dotnet new console -n PlaywrightDemo
cd PlaywrightDemo

# Install dependencies, build project and download necessary browsers.
dotnet add package Microsoft.Playwright
dotnet build
playwright install

Create a Program.cs that will navigate to https://playwright.dev/dotnet and take a screenshot in Chromium.

using Microsoft.Playwright;
using System.Threading.Tasks;

class Program
{
    public static async Task Main()
    {
        using var playwright = await Playwright.CreateAsync();
        await using var browser = await playwright.Chromium.LaunchAsync();
        var page = await browser.NewPageAsync();
        await page.GotoAsync("https://playwright.dev/dotnet");
        await page.ScreenshotAsync(new PageScreenshotOptions { Path = "screenshot.png" });
    }
}

Now run it.

dotnet run

By default, Playwright runs the browsers in headless mode. To see the browser UI, pass the Headless = false flag while launching the browser. You can also use [option: slowMo] to slow down execution. Learn more in the debugging tools section.

await playwright.Firefox.LaunchAsync(new BrowserTypeLaunchOptions { Headless = false, SlowMo = 50 });

First test

You can choose to use NUnit test fixtures that come bundled with Playwright. These fixtures support running tests on multiple browser engines in parallel, out of the box. Learn more about Playwright with NUnit.

# Create new project.
dotnet new nunit -n PlaywrightTests
cd PlaywrightTests

Install dependencies, build project and download necessary browsers. This is only done once per project.

dotnet add package Microsoft.Playwright
dotnet build
playwright install

Edit UnitTest1.cs file.

using System.Threading.Tasks;
using Microsoft.Playwright.NUnit;
using NUnit.Framework;

namespace PlaywrightTests
{
    [Parallelizable(ParallelScope.Self)]
    public class Tests : PageTest
    {
        [Test]
        public async Task ShouldAdd()
        {
            int result = await Page.EvaluateAsync<int>("() => 7 + 3");
            Assert.AreEqual(10, result);
        }

        [Test]
        public async Task ShouldMultiply()
        {
            int result = await Page.EvaluateAsync<int>("() => 7 * 3");
            Assert.AreEqual(21, result);
        }
    }
}

dotnet test -- NUnit.NumberOfTestWorkers=5

Record scripts

Command Line Interface can be used to record user interactions and generate C# code.

playwright codegen

System requirements

The browser binaries for Chromium, Firefox and WebKit work across the 3 platforms (Windows, macOS, Linux):

Windows

Works with Windows and Windows Subsystem for Linux (WSL).

macOS

Requires 10.14 (Mojave) or above.

Linux

Depending on your Linux distribution, you might need to install additional dependencies to run the browsers.

:::note Only Ubuntu 18.04 and Ubuntu 20.04 are officially supported. :::

See also in the Command Line Interface which has a command to install all necessary dependencies automatically for Ubuntu LTS releases.