VB6 - reset ID AutoNumber field in ms access table

From VBA code, you can do this - I assume you mean the AutoNumber:

** VBA Code method - Example**
Place this code in a standard module. Do not name the module the same as the Function below.

Public Function mResetAutoNumber(lStartVal As Long, lIncrement As Long) As String
   'Example: Set the Starting Value and Increment for a table named Table1ANTest and an AutoNumber field called AutoNum
    Dim sSQL As String
    sSQL = "ALTER TABLE [Table1ANTest] ALTER COLUMN [AutoNum] COUNTER (" & lStartVal & ", " & lIncrement & ");"
    CurrentDb.Execute sSQL
    mResetAutoNumber = "Auto Number has been re-numbered"
End Function

The first number (lStartVal) is the starting value, and the second (lIncrement) is the increment.
The example above will start the Auto Number at 1000 and increment by 50.

To run the code one time, open the VBA Immediate Window, and type
this line (including the question mark, followed by Enter:

?mResetAutoNumber(<YourStartValueNumber>, <YourIncrementNumber>)
Example:
?mResetAutoNumber(500,3)

You can run this against an empty existing table, or to modify the *next higher* Auto Number value and increment.
It will *not* change any existing auto number values.

This works for A2K and later.

Hi DatabaseMX

Is this something i can do from my VB6 app?

Hi all

IrogSinta, i hunerstand your point and it make sense.

I will leave it as is.

Thanks again for all your help

"An autonumber field with a data type of Long can go up to over 2 billion. "
Actually ... that's not quite accurate - since we're now on that subject:

An Auto Number (Long Integer) will increment from 1 to 2,147,483,647, then jump to -2,147,483,648, and then
count up to 0. Adding one record a second, 24/7 with no holidays, you can add
records for a bit over 136 years before hitting the limit.

3600 sec/hour * 24 hour/day * 365 days/year = 31,536,000 seconds/year
2,147,483,647 + 2,147,483,648 + 1 = 4,294,967,296 auto numbers

1 year                    1 Sec               4,294,967,296 auto numbers      = 136 YEARS !
-----------------  *  ------------  * ------------------------
31,536,000 seconds      Auto Number


AN                 SomeField

-2147483648      5
-2147483647      6
-2147483645      2
-2147483646      3
-2147483647      4
-4                    a
-3                   b
-2                   c
-1                  d
0                  e
1                  x
2                    z

mx

Cool explanation, mx.

:-)

Thanks for the explanation DatabaseMX