You can find this out by using the following code (1 line):
System.Security.Principal.WindowsIdentity.GetCurrent.User.Translate(GetType(System.Security.Principal.NTAccount)).Value
You can find this out by using the following code (1 line):
System.Security.Principal.WindowsIdentity.GetCurrent.User.Translate(GetType(System.Security.Principal.NTAccount)).Value