Selenium With C#

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Run C# tests on the TestMu AI cloud grid. This guide covers setup, running a sample test, configuring capabilities, and testing locally hosted pages.

Sample repo

All the code used in this guide is available in the sample repository.

View on GitHub

Prerequisites

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Complete the following steps before running C# Selenium tests.

1. Download and install Selenium WebDriver from its official website.
2. Install the latest version of C#.
3. Install the .Net framework for developing applications using C#.
4. Download Selenium WebDriver Language Binding for C# and extract them to the appropriate folder.
5. Install a .NET Core SDK of 2.1 or greater version.
6. Install .NET Runtime to execute tests on Linux or macOS.
7. Get your TestMu AI Username and Access Key from the TestMu AI Dashboard.

Step 1: Clone the Sample Project

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Clone the repository and navigate to the project directory.

git clone https://github.com/LambdaTest/CSharp-Selenium-Sample
cd CSharp-Selenium-Sample

Step 2: Set Your Credentials

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Configure your credentials to connect to the TestMu AI Selenium Grid.

Set TestMu AI Username and Access Key in environment variables.

macOS / Linux

export LT_USERNAME="undefined"
export LT_ACCESS_KEY="undefined"

Windows

set LT_USERNAME="undefined"
set LT_ACCESS_KEY="undefined"

Step 3: Configure Your Test Capabilities

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Define browser, version, and OS settings for your test run.

In the test script, update your test capabilities. This code passes browser, browser version, and operating system information, along with TestMu AI Selenium grid capabilities via the capabilities object.

var browserOptions = new ChromeOptions();
browserOptions.PlatformName = "Windows 10";
browserOptions.BrowserVersion = "latest";

var ltOptions = new Dictionary<string, object>
{
    { "username", LT_USERNAME },
    { "accessKey", LT_ACCESS_KEY },
    { "project", "Demo LT" },
    { "w3c", true },
    { "plugin", "c#-c#" }
};
browserOptions.AddAdditionalOption("LT:Options", ltOptions);

Capabilities Generator

Use the TestMu AI Capabilities Generator to auto-generate the capabilities class for your test requirements.

Step 4: Run the Test

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Execute a sample C# Selenium test against the TestMu AI cloud grid.

Use the following commands to run your single and parallel tests.

Single test

dotnet run single

Parallel test

dotnet run parallel

Step 5: View Your Results

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Check the test output on the console and the TestMu AI dashboard.

Visit the TestMu AI Automation Dashboard to view your test results. The dashboard provides:

• Text logs for each test step
• Screenshots captured during execution
• Video recordings of the full test session

Run C# Selenium Tests Using Agent Skills

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Use AI coding assistants to generate and run C# Selenium tests with the TestMu AI Agent Skill.

The selenium-skill is part of TestMu AI Agent Skills - structured packages that teach AI coding assistants how to write production-grade test automation.

Install the skill:

git clone https://github.com/LambdaTest/agent-skills.git
cp -r agent-skills/selenium-skill .claude/skills/

# For Cursor / Copilot
cp -r agent-skills/selenium-skill .cursor/skills/

tip

Install all available framework skills at once by cloning the repository directly into your tool's skills directory (e.g., .claude/skills/, .cursor/skills/).