README.md

Description

Checks if string is a valid IP or not. I saw this submitted earlier and made my own better version of it. =)

OK there is now an updated version with fixes so go check it out here:

http://planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=57999&lngWId=1&txtForceRefresh=123020041845765523

More Info

Submitted On
By	Daniel M
Level	Beginner
User Rating	3.5 (14 globes from 4 users)
Compatibility	VB 6.0
Category	Coding Standards
World	Visual Basic
Archive File

Source Code

Private Function IsIP(strIP As String) As Boolean
Dim splitIP() As String, i As Long
IsIP = True 'Starts out as true
splitIP$ = Split(strIP$, ".", -1, 1) 'Split IP to check value
'==============================================================
'Things we must check to verify IP
'1. Make sure each section of IP is not greater than 255
'2. Make sure each section of IP does not contain a negative
'3. Make sure each section of IP is numeric
'==============================================================
 For i = 0 To UBound(splitIP$) 'loop through array and check 3 things
  If IsNumeric(splitIP(i)) = False Then
   IsIP = False
   Exit For
  Else
   If splitIP(i) > 255 Or splitIP(i) < 0 Then
    IsIP = False
    Exit For
   End If
  End If
 Next i
End Function