VS2010 Web Load Testing with User Logins

I am looking to create a Web Performance test that can be bound to a CSV file with usernames and passwords so th开发者_运维技巧at I can run concurrent tests with different users. How do I modify a recorded WebTest in order to accomplish this?

Have you checked out Walkthrough: Adding Data Binding to a Web Performance Test (CSV File)?

Once you have added the csv file as a datasource to the webtest,

1. right click on the webtest.
2. select "properties"
3. set the username property to the correct datasource field
4. set the password property likewise