HI,
I have the following code from the web that is in VB.Net and I am writing an app in vb6...Yes I know, I should be moving on! haha!
Could anyone give me a hand with converting it to vb6. I have a problem with the CByte vb6 function:
The following is the .Net code:
'----------------------
' Returns True if a sentence's checksum matches the calculated checksum
Public Function IsValid(ByVal sentence As String) As Boolean
' Compare the characters after the asterisk to the calculation
Return sentence.Substring(sentenc
End Function
' Calculates the checksum for a sentence
Public Function GetChecksum(ByVal sentence As String) As String
' Loop through all chars to get a checksum
Dim Character As Char
Dim Checksum As Integer
For Each Character In sentence
Select Case Character
Case "$"c
' Ignore the dollar sign
Case "*"c
' Stop processing before the asterisk
Exit For
Case Else
' Is this the first value for the checksum?
If Checksum = 0 Then
' Yes. Set the checksum to the value
Checksum = Convert.ToByte(Character)
Else
' No. XOR the checksum with this character's value
Checksum = Checksum Xor Convert.ToByte(Character)
End If
End Select
Next
' Return the checksum formatted as a two-character hexadecimal
Return Checksum.ToString("X2")
End Function
'-------------------
Thanks,
Sean
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Answer for Membership
by: jaime_olivaresPosted on 2005-05-04 at 19:06:17ID: 13932412
Function GetChecksum(ByVal sentence As String) As String
' Loop through all chars to get a checksum
Dim Character As Char
Dim Checksum As Integer
Dim I as Integer
For I = 1 to Len(sentence)
Character = Mid(sentence, I, 1)
Select Case Character
Case "$"
' Ignore the dollar sign
Case "*"
' Stop processing before the asterisk
Exit For
Case Else
' Is this the first value for the checksum?
If Checksum = 0 Then
' Yes. Set the checksum to the value
Checksum = Asc(Character)
Else
' No. XOR the checksum with this character's value
Checksum = Checksum Xor Asc(Character)
End If
End Select
Next
' Return the checksum formatted as a two-character hexadecimal
GetChecksum = Hex(CheckSum)
If Len(CheckSum)<2
CheckSum = "0" & CheckSum
End If
End Function