after i define

con.ConnectionString = dbprovider & dbsource

leads to error
The '.NET Framework Data Provider for OLE DB Data Source = C:\Users.... \Database1.mdb' provider is not registered on the local machine.

i have access and .net framework installed

Please post the values of dbprovider & dbsource. Examples for connecting to Access via OleDb can be found here

dbprovider=".NET Framework Data Provider for OLE DB"
dbsource="C:\Users\Spyros\Documents\Visual Studio 2010\Projects\myoffice0\myoffice0\myoffice0\Database1.mdb"


dbsource = "C:\Users\Spyros\Documents\Visual Studio 2010\Projects\myoffice0\myoffice0\myoffice0\Database1.mdb"
Dim con As New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & dbfile & ";User Id=admin;Password=;")
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