I want to do load testing with Visual Studio but i don't get the idea how to setup **load testing with authenticated users**.

Imagine my scenario. This should be a quite common problem:

* a website where you need to **authenticate with username and password**.  

Perform a action that is only allowed for a authenticated user

What i have done so far:

* i have already written **UI tests with Selenium:**  

(this is working quite nice)

**UPDATE:** My Selenium test class: **I want to use this code with the load test.**  
This is a data-driven unit test project as you can see on method *TestCase4529*

```
[TestClass]
public class Scenario2
{
    private IWebDriver driver;
    public TestContext TestContext { get; set; }

    [TestInitialize]
    public void SetupTest()
    {
        this.driver = new ChromeDriver();
        this.driver.Manage().Timeouts().ImplicitWait = new TimeSpan(0, 0, 30);
    }

    [TestCleanup]
    public void TeardownTest()
    {
        this.driver.Quit();
    }

    [DataSource("Microsoft.VisualStudio.TestTools.DataSource.CSV", "|DataDirectory|\\4529.csv", "4529#csv", DataAccessMethod.Sequential), DeploymentItem("4529.csv"), TestMethod]
    public void TestCase4529()
    {
        var userName = TestContext.DataRow["UserName"].ToString();
        var password = TestContext.DataRow["Password"].ToString();

        // UI Test logic
        var loginPage = new LoginPage(this.driver);
        loginPage.FillForm(userName, password);
        loginPage.LoginButton.Click();

        // Some assertions
    }
}

```

Now when i setup the load test in Visual Studio i am asked how many users should do something:

[![enter image description here](https://i.stack.imgur.com/Iu29K.png)](https://i.stack.imgur.com/Iu29K.png)

I am not getting what this number means:

* Does it only mean number of simultaneous threads?
* How can i get a connection between a user (defined in the load test) an a authenticated user in my Selenium test?

What i would like to achieve:

* Each user defined in the load test should be a authenthenticated user in my selenium UI test.

May somebody give me an idea how to do that or what i am thinking wrong...