If you have written your selenium tests using C# then you can easily execute them using Test Studio. Steps to proceed:
1. In Test Studio create a new test.
2. Add a coded step in the test.
4. Make sure you add the using statements:
5. Paste/write the selenium test in the coded step:
The provided code sample above opens Firefox browser and navigates to Google.com. In the search field it types "webdriver" and hit the search button.