C# with Playwright: Running Your First Test

Learn how to use Playwright with C# to automate web application testing across 50+ real browsers and operating systems on LambdaTest cloud platform.

Prerequisites

You can use your own project to configure and test it. For demo purposes, we are using the sample repository.

Sample repo

Download or clone the code sample for the Playwright C# from the LambdaTest GitHub repository to run the tests.

View on GitHub

git clone https://github.com/LambdaTest/playwright-sample.git
cd playwright-sample
cd playwright-csharp

Install the npm dependencies.

npm install

A LambdaTest Username and Access key. You can get it from your LambdaTest Profile section. Don't have an account, sign up for free.

To run Playwright tests, set your LambdaTest Username and Access key in the Environment Variables.

Run your Playwright tests with C#

Navigate to the PlaywrightTestSingle.cs file in the playwright-csharp directory.

using Microsoft.Playwright;
using System.Threading.Tasks;
using System;
using System.Collections.Generic;
using Newtonsoft.Json;

class PlaywrightTestSingle
{
    public static async Task main(string[] args)
    {
        using var playwright = await Playwright.CreateAsync();

        string user, accessKey;
        user = Environment.GetEnvironmentVariable("LT_USERNAME");
        accessKey = Environment.GetEnvironmentVariable("LT_ACCESS_KEY");

        Dictionary<string, object> capabilities = new Dictionary<string, object>();
        Dictionary<string, string> ltOptions = new Dictionary<string, string>();

        ltOptions.Add("name", "Playwright Test");
        ltOptions.Add("build", "Playwright C-Sharp tests");
        ltOptions.Add("platform", "Windows 10");
        ltOptions.Add("user", user);
        ltOptions.Add("accessKey", accessKey);

        capabilities.Add("browserName", "Chrome");
        capabilities.Add("browserVersion", "latest");
        capabilities.Add("LT:Options", ltOptions);

        string capabilitiesJson = JsonConvert.SerializeObject(capabilities);

        string cdpUrl = "wss://cdp.lambdatest.com/playwright?capabilities=" + Uri.EscapeDataString(capabilitiesJson);

        await using var browser = await playwright.Chromium.ConnectAsync(cdpUrl);
        var page = await browser.NewPageAsync();
        try {
          await page.GotoAsync("https://www.bing.com");
          await page.Locator("[aria-label='Enter your search term']").ClickAsync();
          await page.FillAsync("[aria-label='Enter your search term']", "LambdaTest");
          await page.Keyboard.PressAsync("Enter");
          var title = await page.TitleAsync();

          if (title.Contains("LambdaTest"))
          {
            // Use the following code to mark the test status.
            await SetTestStatus("passed", "Title matched", page);
          }
          else {
            await SetTestStatus("failed", "Title not matched", page);
          }
        }
        catch (Exception err) {
          await SetTestStatus("failed", err.Message, page);
        }
        await browser.CloseAsync();
    }

    public static async Task SetTestStatus(string status, string remark, IPage page) {
        await page.EvaluateAsync("_ => {}", "lambdatest_action: {\"action\": \"setTestStatus\", \"arguments\": {\"status\":\"" + status + "\", \"remark\": \"" + remark + "\"}}");
    }
}