Gui, Add, Text, w200, Username:
Gui, Add, Edit, vuser w200
Gui, Add, Text, w200, Password:
Gui, Add, Edit, vpass w200
Gui, Add, Button, gNext w200 Default, Login
Gui, Show,, My GUI #1
return

Next:
Gui, Submit, NoHide
fileread,redFile,registerUsers.txt
loop,parse,redFile, `n
{
     StringSplit,credential,A_LoopField,|
	 msgbox % credential1 . "`n" . credential2
          if (user = credential1) and (pass = credential2){
              msgbox hello ---admin---
              return
             }

}

msgbox you're not an admin`n`nhello %credential1%`nyour password is %credential2%
return

Esc::ExitApp