title: Get application username for Audit table
body: <p>I want to implement an audit table and I have no idea how am I supposed to get the username. </p>
  
  <p>I am using C# and Sql Server. I have a Users table in my database. When I log in my windows form application I verify if the correct combination of username and password is used. But how do I inform the database of the current user? I thought of adding an extra column to my Users table in which to set on 1 the logged username. Is that a solution for single-user? But my application in supposed to support multi-user. What could be done in this case?</p>