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Home > Forums > Programmers > DBMS Packages > dBASE Inc.: dBASE Forum

dBase + VB2008

thread290-1637019
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heavymetalharry (Programmer)
4 Feb 11 4:33
I am trying to a Dbase file with a .CDB extension using MS VB2008.
If I change the extension to .DBF everything works fine. I must retain the .CDB extension.
The connection string I am using is:

Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:\folder;Extended Properties=dBASE IV;User ID=Admin;Password=;.

I am told the "Microsoft.Jet" engine will only recognise .DBF

Is there any other connection string I could use ?
dbMark (Programmer)
8 Feb 11 12:11
Have you tried using ADO, creating a ConnectionString and RecordSet?  Although it's a pain and a bit awkward, it does work once you figure it all out.  Here's how it is done in Visual FoxPro (requires installed Microsoft Office2007 OLE ODBC Access Database Engine):

CODE

oConn = CREATEOBJECT("ADODB.Connection")
* set this property:
oConn.Mode
oConn.Open("Driver={Microsoft dBASE Driver (*.dbf)};DriverID=277;Dbq="+myPath)
oRSet = CREATEOBJECT("ADODB.Recordset")
oRSet.Open("SELECT * FROM "+myTable,oConn)
* set these properties:
oRSet.CursorLocation
oRSet.CursorType
oRSet.LockType
Be sure to lookup the various property settings on some tutorial sites such as http://www.w3schools.com/ado/default.asp

ADO drivers do have limits and not all ADO features are coded in every driver, for example, Sort does not workin this driver.

Warning from past experience: If appending a record, any dates in those appended records that are referenced in indexes must have non-empty values or the index *always* gets corrupted and has to be reindexed or recreated from within dBase.  Evidently the driver does not know how to handle null dates when manipulating the index.
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