Determine from within code which user my process is running as

Question

There's really no pressing reason for me to ask this question other than curiosity - using C#, is there a way to determine from within code which user my process is running as? To illustrate using code:

static void Main(string[] args) {   string userID;   //what goes here to fill in this userID variable?   Console.out.WriteLine(string.Format("This process is running as {0}.", userID)); } 

Answer 1

string userID = WindowsIdentity.GetCurrent().Name 

From MSDN: WindowsIdentity.GetCurrent() and WindowsIdentity.Name

Answer 2

string UserID = Environment.UserName;