问题
I have an excel file with one order on each row, and I want each order to have a unique identifier, so there will be a Unique ID column. Every time I fill a row, I want Excel to automatically populate the Unique ID column for me. I did some research and was pointed in the direction of GUIDs. I found the following code:
Function GenGuid() As String
Dim TypeLib As Object
Dim Guid As String
Set TypeLib = CreateObject("Scriptlet.TypeLib")
Guid = TypeLib.Guid
' format is {24DD18D4-C902-497F-A64B-28B2FA741661}
Guid = Replace(Guid, "{", "")
Guid = Replace(Guid, "}", "")
Guid = Replace(Guid, "-", "")
GenGuid = Guid
End Function
but I am not sure how I can implement it. Any help would be greatly appreciated. Thank you in advance.
回答1:
The following Excel expression evaluates to a V4 GUID:
=CONCATENATE(DEC2HEX(RANDBETWEEN(0,4294967295),8),"-",DEC2HEX(RANDBETWEEN(0,65535),4),"-",DEC2HEX(RANDBETWEEN(16384,20479),4),"-",DEC2HEX(RANDBETWEEN(32768,49151),4),"-",DEC2HEX(RANDBETWEEN(0,65535),4),DEC2HEX(RANDBETWEEN(0,4294967295),8))
-or (depending on locale setting/decimal and list separators)-
=CONCATENATE(DEC2HEX(RANDBETWEEN(0;4294967295);8);"-";DEC2HEX(RANDBETWEEN(0;65535);4);"-";DEC2HEX(RANDBETWEEN(16384;20479);4);"-";DEC2HEX(RANDBETWEEN(32768;49151);4);"-";DEC2HEX(RANDBETWEEN(0;65535);4);DEC2HEX(RANDBETWEEN(0;4294967295);8))
Note that the first character of the third group is always 4 to signify a V4 (pseudo-random number generated) GUID/UUID per RFC 4122 section 4.4.
Also note that the first character of the fourth group is always between 8 and B per the same RFC.
Standard disclaimer: the resulting GUIDs/UUIDs are not cryptographically strong.
回答2:
I used the following function in v.2013 excel vba to create a GUID and is working well..
Public Function GetGUID() As String
GetGUID = Mid$(CreateObject("Scriptlet.TypeLib").GUID, 2, 36)
End Function
回答3:
I know this question is answered, but I think the code in question should look something like what's on this page: http://snipplr.com/view/37940/
Haven't tested, but this code seems to tap into the Windows API to get its GUID's - I would try putting that in a public module and typing =GetGUId() in an Excel cell to see what I'd get. If it works in VB6 you have a great deal of a good chance it works in VBA as well:
Private Type GUID
Data1 As Long
Data2 As Integer
Data3 As Integer
Data4(7) As Byte
End Type
Private Declare Function CoCreateGuid Lib "OLE32.DLL" (pGuid As GUID) As Long
Public Function GetGUID() As String
'(c) 2000 Gus Molina
Dim udtGUID As GUID
If (CoCreateGuid(udtGUID) = 0) Then
GetGUID = _
String(8 - Len(Hex$(udtGUID.Data1)), "0") & Hex$(udtGUID.Data1) & _
String(4 - Len(Hex$(udtGUID.Data2)), "0") & Hex$(udtGUID.Data2) & _
String(4 - Len(Hex$(udtGUID.Data3)), "0") & Hex$(udtGUID.Data3) & _
IIf((udtGUID.Data4(0) < &H10), "0", "") & Hex$(udtGUID.Data4(0)) & _
IIf((udtGUID.Data4(1) < &H10), "0", "") & Hex$(udtGUID.Data4(1)) & _
IIf((udtGUID.Data4(2) < &H10), "0", "") & Hex$(udtGUID.Data4(2)) & _
IIf((udtGUID.Data4(3) < &H10), "0", "") & Hex$(udtGUID.Data4(3)) & _
IIf((udtGUID.Data4(4) < &H10), "0", "") & Hex$(udtGUID.Data4(4)) & _
IIf((udtGUID.Data4(5) < &H10), "0", "") & Hex$(udtGUID.Data4(5)) & _
IIf((udtGUID.Data4(6) < &H10), "0", "") & Hex$(udtGUID.Data4(6)) & _
IIf((udtGUID.Data4(7) < &H10), "0", "") & Hex$(udtGUID.Data4(7))
End If
End Function
Thanks Gus Molina!
If this code works (which I don't doubt), I think you'd get a new set of GUID's whenever the function gets evaluated, which means everytime the sheet gets calculated - when you're saving the workbook, for example. Make sure to copy-pastespecial-values if you need the GUID's for later use... which is somewhat likely.
回答4:
A VBA approach based on generating random numbers using the Rnd() function, and not on external API calls or Scriptlet.TypeLib:
Public Function CreateGUID() As String
Do While Len(CreateGUID) < 32
If Len(CreateGUID) = 16 Then
'17th character holds version information
CreateGUID = CreateGUID & Hex$(8 + CInt(Rnd * 3))
End If
CreateGUID = CreateGUID & Hex$(CInt(Rnd * 15))
Loop
CreateGUID = "{" & Mid(CreateGUID, 1, 8) & "-" & Mid(CreateGUID, 9, 4) & "-" & Mid(CreateGUID, 13, 4) & "-" & Mid(CreateGUID, 17, 4) & "-" & Mid(CreateGUID, 21, 12) & "}"
End Function
This essentially is a VBA implementation of NekojiruSou's answer (it also generates a v4 GUID), and carries the same limitations, but will work in VBA and might be easier to implement.
Note that you can omit the last line to not return the dashes and curly braces in the result.
回答5:
I found pretty solution here:
http://www.sql.ru/forum/actualutils.aspx?action=gotomsg&tid=751237&msg=8634441
Option Explicit
Private Type GUID
Data1 As Long
Data2 As Integer
Data3 As Integer
Data4(0 To 7) As Byte
End Type
Private Declare Function CoCreateGuid Lib "ole32" (pguid As GUID) As Long
Private Declare Function StringFromGUID2 Lib "ole32" ( _
rguid As GUID, ByVal lpsz As Long, ByVal cchMax As Long) As Long
Public Function CreateGUID() As String
Dim NewGUID As GUID
CoCreateGuid NewGUID
CreateGUID = Space$(38)
StringFromGUID2 NewGUID, StrPtr(CreateGUID), 39
End Function
回答6:
Same same for german Excel version:
=VERKETTEN(DEZINHEX(ZUFALLSBEREICH(0;4294967295);8);"-";DEZINHEX(ZUFALLSBEREICH(0;65535);4);"-";DEZINHEX(ZUFALLSBEREICH(16384;20479);4);"-";DEZINHEX(ZUFALLSBEREICH(32768;49151);4);"-";DEZINHEX(ZUFALLSBEREICH(0;65535);4);DEZINHEX(ZUFALLSBEREICH(0;4294967295);8))
回答7:
Since windows update taken out "Scriptlet.TypeLib", try the following:
Declare Function CoCreateGuid Lib "ole32" (ByRef GUID As Byte) As Long
Public Function GenerateGUID() As String
Dim ID(0 To 15) As Byte
Dim N As Long
Dim GUID As String
Dim Res As Long
Res = CoCreateGuid(ID(0))
For N = 0 To 15
GUID = GUID & IIf(ID(N) < 16, "0", "") & Hex$(ID(N))
If Len(GUID) = 8 Or Len(GUID) = 13 Or Len(GUID) = 18 Or Len(GUID) = 23 Then
GUID = GUID & "-"
End If
Next N
GenerateGUID = GUID
End Function
Alternatively,
if you are connecting to SQL Server 2008 or higher, try to use the SQL NEWID() function instead.
回答8:
If you are inserting records into a database you can use this way to make a GUID.
It is probably the most simplest and easiest way to implement as you don't need a complex VBA function as you use the built in SQL function.
The statement uses NewID(),
The syntax is as follows,
INSERT INTO table_name (ID,Column1,Column2,Column3)
VALUES (NewID(),value1,value2,value3)
In VBA syntax it is as follows,
strSql = "INSERT INTO table_name " _
& "(ID,Column1,Column2,Column3) " _
& "VALUES (NewID(),value1,value2,value3)"
And if you need to concatenate values, just treat it as a string and concatenate as you would normally for a SQL statement,
strSql = "INSERT INTO table_name " _
& "(ID,Column1,Column2,Column3) " _
& "VALUES (" & "NewID()" & "," & "value1" & "," & "value2" & "," & "value3" & ")"
回答9:
I recently ran into problems using CreateObject("Scriptlet.TypeLib") in some vba code.
So based on NekojiruSou excel functions wrote the following which should work without any specific excel functions. This can be used to develop a user defined function in excel.
Public Function Get_NewGUID() As String
'Returns GUID as string 36 characters long
Randomize
Dim r1a As Long
Dim r1b As Long
Dim r2 As Long
Dim r3 As Long
Dim r4 As Long
Dim r5a As Long
Dim r5b As Long
Dim r5c As Long
'randomValue = CInt(Math.Floor((upperbound - lowerbound + 1) * Rnd())) + lowerbound
r1a = RandomBetween(0, 65535)
r1b = RandomBetween(0, 65535)
r2 = RandomBetween(0, 65535)
r3 = RandomBetween(16384, 20479)
r4 = RandomBetween(32768, 49151)
r5a = RandomBetween(0, 65535)
r5b = RandomBetween(0, 65535)
r5c = RandomBetween(0, 65535)
Get_NewGUID = (PadHex(r1a, 4) & PadHex(r1b, 4) & "-" & PadHex(r2, 4) & "-" & PadHex(r3, 4) & "-" & PadHex(r4, 4) & "-" & PadHex(r5a, 4) & PadHex(r5b, 4) & PadHex(r5c, 4))
End Function
Public Function Floor(ByVal X As Double, Optional ByVal Factor As Double = 1) As Double
'From: http://www.tek-tips.com/faqs.cfm?fid=5031
' X is the value you want to round
' Factor is the multiple to which you want to round
Floor = Int(X / Factor) * Factor
End Function
Public Function RandomBetween(ByVal StartRange As Long, ByVal EndRange As Long) As Long
'Based on https://msdn.microsoft.com/en-us/library/f7s023d2(v=vs.90).aspx
' randomValue = CInt(Math.Floor((upperbound - lowerbound + 1) * Rnd())) + lowerbound
RandomBetween = CLng(Floor((EndRange - StartRange + 1) * Rnd())) + StartRange
End Function
Public Function PadLeft(text As Variant, totalLength As Integer, padCharacter As String) As String
'Based on https://stackoverflow.com/questions/12060347/any-method-equivalent-to-padleft-padright
' with a little more checking of inputs
Dim s As String
Dim inputLength As Integer
s = CStr(text)
inputLength = Len(s)
If padCharacter = "" Then
padCharacter = " "
ElseIf Len(padCharacter) > 1 Then
padCharacter = Left(padCharacter, 1)
End If
If inputLength < totalLength Then
PadLeft = String(totalLength - inputLength, padCharacter) & s
Else
PadLeft = s
End If
End Function
Public Function PadHex(number As Long, length As Integer) As String
PadHex = PadLeft(Hex(number), 4, "0")
End Function
回答10:
I created a VBA function that works both on mac and windows:
https://github.com/Martin-Carlsson/Business-Intelligence-Goodies/blob/master/Excel/GenerateGiud/GenerateGiud.bas
'Generates a guid, works on both mac and windows
Function Guid() As String
Guid = RandomHex(3) + "-" + _
RandomHex(2) + "-" + _
RandomHex(2) + "-" + _
RandomHex(2) + "-" + _
RandomHex(6)
End Function
'From: https://www.mrexcel.com/forum/excel-questions/301472-need-help-generate-hexadecimal-codes-randomly.html#post1479527
Private Function RandomHex(lngCharLength As Long)
Dim i As Long
Randomize
For i = 1 To lngCharLength
RandomHex = RandomHex & Right$("0" & Hex(Rnd() * 256), 2)
Next
End Function
回答11:
Function funGetGuid() As String
Const URL As String = "http://www.guidgen.com/"
Const strMask As String = "value="
Dim l As Long
Dim txt As String
With CreateObject("MSXML2.XMLHTTP")
.Open "GET", URL, False
.send
txt = .responseText
End With
Do
l = InStr(l + 1, txt, strMask)
If l = 0 Then Exit Do
funGetGuid = Mid$(txt, l + Len(strMask) + 1, 36)
Loop
End Function
来源：https://stackoverflow.com/questions/7031347/how-can-i-generate-guids-in-excel