Run codeunit from outside NAV

Only by starting Navision itself.

eg:

"C:\Program Files\Navision\5.01\finsql.exe" ID=RUN-C50099,servername=NAVSVR,database=Navision,ntauthentication=Yes,company=TVision Technology Ltd

Then in codeunit 1 at the end of Function "LogInStart"

IF CODEUNIT.RUN(CODEUNIT::"Autostart control") THEN ;

Then in the OnRun of codeunit "Autostart control"

I := STRPOS(UPPERCASE(COMMANDLINE), 'ID=');
IF I = 0 THEN EXIT ELSE BEGIN
  Str := COPYSTR(COMMANDLINE, I+3);
  I := STRPOS(Str, ',');
  IF I > 0 THEN BEGIN
    IF I > 1 THEN
      Str := COPYSTR(Str, 1, I-1)
    ELSE
      Str := '';
  END;
  I := STRPOS(Str, '-C');
  IF I = 0 THEN EXIT;
  Str := COPYSTR(Str, I+2);
  IF NOT EVALUATE(CodeunitNo, Str) THEN
    EXIT;

  CODEUNIT.RUN(CodeunitNo);
END;

The problem, of course, is exiting Navision once the codeunit has finished. Perhaps you can do some sendkeys stuff to simulate an Alt-F4. I have a few bits of code that will crash Navision ... but that's not very nice.

More likely a better solution is to look for an automation and start Navision if it's not there before trying again.