detect current systme user name code example
Example 1: c# get username
string userName = System.Security.Principal.WindowsIdentity.GetCurrent().Name;
Example 2: c# get logged on user name
foreach (System.Management.ManagementObject Process in Processes.Get())
{
if (Process["ExecutablePath"] != null &&
System.IO.Path.GetFileName(Process["ExecutablePath"].ToString()).ToLower() == "explorer.exe" )
{
string[] OwnerInfo = new string[2];
Process.InvokeMethod("GetOwner", (object[])OwnerInfo);
Console.WriteLine(string.Format("Windows Logged-in Interactive UserName={0}", OwnerInfo[0]));
break;
}
}