by Dr Morphin (8 Submissions)
Category: Internet/HTML
Compatability: Visual Basic 5.0
Difficulty: Unknown Difficulty
Originally Published: Sat 10th February 2007
Date Added: Mon 8th February 2021
Rating: 
(1 Votes)
IP Address Validator
API Declarations
' Put On Comnand Button on your projcet
VBcoders
Dim i As Integer
Dim dot_count As Integer
Dim test_octet As String
Dim byte_check
IP = Trim$(IP)
If Len(IP) < 8 Then
Valid_IP = False
MsgBox IP & " is Invalid", , "IP Validator"
Exit Function
End If
i = 1
dot_count = 0
For i = 1 To Len(IP)
If Mid$(IP, i, 1) = "." Then
dot_count = dot_count + 1
test_octet = ""
If i = Len(IP) Then
Valid_IP = False
MsgBox IP & " is Invalid", , "IP Validator"
Exit Function
End If
Else
test_octet = test_octet & Mid$(IP, i, 1)
On Error Resume Next
byte_check = CByte(test_octet)
If (Err) Then
Valid_IP = False
Exit Function
End If
End If
Next i
If dot_count <> 3 Then
Valid_IP = False
Exit Function
End If
Valid_IP = True
MsgBox IP & " is Valid", , "IP Validator"
End Function
Private Sub Command1_Click()
If Len(Text1) = 0 Then
MsgBox "Please type an IP Address in the textbox.", , "IP Validator"
Else
Valid_IP Text1
End If
End Sub
