password project questions!

hi everyone.
this is the first time i'm posting a question. i'm a beginner in VB and i'm doing a project for class. my partner and i are having trouble creating a password manager project. we have to check that there are both numberic # and alpha in a string. we don't know how to do this, with do until loop? and also how can we create a log file that logs every activity (i.e.whenever a user logs in)? I'd really appreciate if anyone can provide some hints or expertise. thank you.

Hello anitafajita,


You can use something like the following to check for Char and numbers in a string.

Private Sub Command1_Click()

  Dim I As Integer, iNum As Integer, iAlfa As Integer
  Dim sData As String, sChar As String
  
  ' get a string from the textbox
  sData = Text1.Text
  
  ' loop thru the string
  For I = 1 To Len(sData)
    ' get the current pos
    sChar = Mid(sData, I, 1)
    ' check to see if we have a number
    If IsNumeric(sChar) Then
      iNum = iNum + 1
    ' check and see if we have a char
    ElseIf Asc(sChar) >= 41 And Asc(sChar) <= 90 Or _
           Asc(sChar) >= 97 And Asc(sChar) <= 122 Then
      iAlfa = iAlfa + 1
    End If
  Next I
  
  ' display what we found
  MsgBox "There are " & iNum & " Numbers." & vbCrLf & _
         "There are " & iAlfa & " Character .", vbInformation
         
End Sub

To create a log file you need to open a file and print to it. You could use something like this:

Public Sub SaveToDisk()

    Dim sFileName As String, sData As String
    Dim iFileNum As Integer
    
    ' set the file path up
    sFileName = App.Path & "\applog.txt"
    ' get a free file from the system
    iFileNum = FreeFile
    ' open the file
    Open sFileName For Append As iFileNum Len = gRecLen
    
    ' create the string to print
    sData = "The user Looged in " & format(Now, "mm/dd/yy")
    
    ' print the string to the file
    Print #iFileNum, sData
    ' close the file
    Close iFileNum

End Sub

You should also add your Error handeling in there also.

Best of luck,

hi roger or anyone who's reading this,
thank you so much for your prompt reply and help. we did figure out how to check the password string with your help. about the text file log, i used your codes but it didn't work with gRecLen. do u know why? i don't know how to use it. another question we have if you can help us out is how do we block system administrator's record from the security administrator accessing it?(we're working with access) basically there are 3 kinds of users (sys admin, security admin, and user) and we have to make sure that security admin can only change its own password and the users'. does this make sense? when the security admin goes in the system, how do we make sure sys admin's record isn't shown.
i hope i'm not confusing you. i'm so sorry to ask you so many questions...any help is appreciated. thank you again.

anitafajita :+)

Hello,

Sorry about the code for the file, I grabbed that section from a app I wrote some time ago that had a UDT that I used in the print statement. Below is that same code reworked with out the UDT in it.

Private Sub Command1_Click()

    Dim sFileName As String, sData As String
    Dim iFileNum As Integer
    
    ' set the file path up
    sFileName = App.Path & "\applog.txt"
    ' get a free file from the system
    iFileNum = FreeFile
    ' open the file
    Open sFileName For Append As iFileNum
    
    ' create the string to print
    sData = "The user Looged in " & Format(Now, "mm/dd/yy")
    
    ' print the string to the file
    Print #iFileNum, sData
    ' close the file
    Close iFileNum

End Sub

Now for your next question....

I will have to ask you to reword that question simply because I'm not sure what you want to hide and from whom you want to hide it? Well maybe I got that much but I'm still a little fuzzy on what your tring to hide.

Hi roger.
ur reply was really fast..wow, thank u.
ok ur idea is right but just to add in that system admin. can add new users, change and delete anything he/she wants to. security admin. can change his/her own password along w/ the users'. the users can only change their own password. sorry that i confused u.
along with this problem, we also need to figure out how to make sure the system admin's record can never be deleted?
hey you're helping me out more w/ VB than my professor...it is really cool...thanks!

anitafajita :P