c# get username of process
//-----------------------------------------
// Very fast non-WMI process username search
// import System.Security.Principal
// and System.Runtime.InteropServices
// for this to work
//-----------------------------------------
private static string GetProcessUser(Process process)
{
IntPtr processHandle = IntPtr.Zero;
try
{
OpenProcessToken(process.Handle, 8, out processHandle);
WindowsIdentity wi = new WindowsIdentity(processHandle);
string user = wi.Name;
return user.Contains(@"\") ? user.Substring(user.IndexOf(@"\") + 1) : user;
}
catch
{
return null;
}
finally
{
if (processHandle != IntPtr.Zero)
{
CloseHandle(processHandle);
}
}
}
[DllImport("advapi32.dll", SetLastError = true)]
private static extern bool OpenProcessToken(IntPtr ProcessHandle, uint DesiredAccess, out IntPtr TokenHandle);
[DllImport("kernel32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool CloseHandle(IntPtr hObject);
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