public static bool SetProcessPrivilege(string privilege, bool newState, out bool previousState)
        {
            bool flag = false;

            previousState = false;
            bool result;

            try
            {
                IntPtr             zero = IntPtr.Zero;
                NativeMethods.LUID luid = default(NativeMethods.LUID);
                luid.LowPart  = 0U;
                luid.HighPart = 0U;
                if (!NativeMethods.OpenProcessToken(NativeMethods.GetCurrentProcess(), TokenAccessLevels.Query | TokenAccessLevels.AdjustPrivileges, ref zero))
                {
                    result = false;
                }
                else if (!NativeMethods.LookupPrivilegeValue(null, privilege, ref luid))
                {
                    NativeMethods.CloseHandle(zero);
                    result = false;
                }
                else
                {
                    NativeMethods.TOKEN_PRIVILEGE token_PRIVILEGE  = default(NativeMethods.TOKEN_PRIVILEGE);
                    NativeMethods.TOKEN_PRIVILEGE token_PRIVILEGE2 = default(NativeMethods.TOKEN_PRIVILEGE);
                    token_PRIVILEGE.PrivilegeCount       = 1U;
                    token_PRIVILEGE.Privilege.Luid       = luid;
                    token_PRIVILEGE.Privilege.Attributes = (newState ? 2U : 0U);
                    uint num = 0U;
                    NativeMethods.AdjustTokenPrivileges(zero, false, ref token_PRIVILEGE, (uint)Marshal.SizeOf(token_PRIVILEGE2), ref token_PRIVILEGE2, ref num);
                    previousState = ((token_PRIVILEGE2.Privilege.Attributes & 2U) > 0U);
                    flag          = true;
                    NativeMethods.CloseHandle(zero);
                    result = flag;
                }
            }
            catch (Exception)
            {
                result = flag;
            }
            return(result);
        }
 private static extern bool AdjustTokenPrivileges([In] IntPtr TokenHandle, [MarshalAs(UnmanagedType.Bool)][In] bool DisableAllPrivileges, [In] ref NativeMethods.TOKEN_PRIVILEGE NewState, [In] uint BufferLength, [In][Out] ref NativeMethods.TOKEN_PRIVILEGE PreviousState, [In][Out] ref uint ReturnLength);