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VB script for Hexadecimal usage

Posted on 2008-10-01
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Last Modified: 2012-06-21
Hi,

We have a hexadecimal like  0C0BA715B2223D47A8CACA87BE5D9679 . We want to use that in Vb script. We are not able to use that because it was taking only 8 bit values. So Could please tell us how can we use this kind of long hexadecimals in Vb script for assigning and addition.

Thanks in advance.
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Question by:ADP india
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Expert Comment

by:sirbounty
ID: 22614889
According to
http://support.microsoft.com/kb/279115

Use
 MsgBox CLng("&h" & hex_value)

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Author Comment

by:ADP india
ID: 22615432
COULD YOU PLEASE TELL ME HOW TO ASSIGN 32 DIGIT HEXADECIMAL VALUE ( LIKE 0C0BA715B2223D47A8CACA87BE5D9679 ) TO A VARIABLE.

I HAVE TRIED  THIS WAY
DIM X= &h123AB344
ITS EXACTLY TAKING 8 DIGITS ELSE IT IS SAYING SYNTAX ERROR
PLEASE LET ME KNOW HOW TO PROCEED FURTHER...
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Expert Comment

by:sirbounty
ID: 22615523
Try the modified solution from here: http://www.experts-exchange.com/Q_21716456.html
HexVal="0C0BA715B2223D47A8CACA87BE5D9679"
 
wscript.echo HexToDec (HexVal)
 
Function HexToDec(HexNum)
    Dim x
    Dim TempValue
    Dim Digit
    Dim DecValue
 
    If UCase(Left(HexNum, 2)) = "&H" Then HexNum = Right(HexNum, Len(HexNum) - 2)
 
    For x = Len(HexNum) To 1 Step -1
        Digit = Mid(HexNum, x, 1)
        If UCase(Digit) = "A" Then
                TempValue = 10
        ElseIf UCase(Digit) = "B" Then
                TempValue = 11
        ElseIf UCase(Digit) = "C" Then
                TempValue = 12
        ElseIf UCase(Digit) = "D" Then
                TempValue = 13
        ElseIf UCase(Digit) = "E" Then
                TempValue = 14
        ElseIf UCase(Digit) = "F" Then
                TempValue = 15
        ElseIf UCase(Digit) >= "0" And UCase(Digit) <= "9" Then
                TempValue = Digit
      Else
                wscript.echo "Error in Hex string! (" & HexNum & ")"
                Exit Function
        End If
 
        DecValue = DecValue + TempValue * 16 ^ (Len(HexNum) - x)
    Next
 
    HexToDec = DecValue
End Function

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LVL 10

Expert Comment

by:MoreHeroic
ID: 22615731
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Author Comment

by:ADP india
ID: 22622087
I believe this converts hexadecimal value to decimal. but i directly want to increment the hex value...is there any possibility as such....if so please let us know.

Thanks for the response.
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Author Comment

by:ADP india
ID: 22622108
Also how do i assign this 32digit hex value to a variable..bcoz by default it is taking only 8digits and also is there any static declaration kind of thing in vb like in "c" so that it retains latest value every time i run a script.

For ex: if today a variable contains 0 i run the  script and after increments and all the  latest value is 5
next time when i run the same script i should continue from 5 and not 0
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Accepted Solution

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MoreHeroic earned 1500 total points
ID: 22624576
Here you go, large hex string addition where you keep the HEX values in strings:

http://blog.benfinnigan.com/2008/10/vbscript-adding-large-hex-strings.html
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Expert Comment

by:MoreHeroic
ID: 22624591
To answer your question about keeping the variable static it wouldn't work between runs unless you stored it off someplace because once the vbscript has completed it is removed from memory.
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