2. Visual Basic 6 ADO Visual Basic 6 obsoletes the previously
useddatabase access technology provided by Jet This provides a new
one known as ADO or ActiveData Objects This technology allows users
to access dataeasily from many existing databases like Oracleor MS
SQL Server ADO is quite simple and allows programmers toprovide
flexible database front ends 3. Connection Object This object
represents an open connection to thedata source This connection can
be a local connection or canbe across a network Key Properties and
MethodsPropertyMethods ConnectionString Close Provider Open
ConnectionTimeout CommandTimeout CursorLocation Mode 4. Command
Object A command object specifies a specific methodyou intend to
execute on or against the datasource accessed by an open connection
Key Properties and Methods Property Methods Key Properties and
Execute Methods CommandText CommandType 5. Recordset Object The
RecordSet object represents a complete setof records from an
underlying base table in thedatabase RecordSet object references
only one record at atime as the current record Key Properties and
Methods MethodsProperty CursorLocation AddNew CursorType Close and
Open EOF and BOFMoveNext Fields MoveFirst
RecordCountMoveLastMovePrevious 6. Putting These altogether Define
and open a Connection to a data source Decide what data you need
from the data sourceand define Command objects that will retrieve
thisdata. Retrieve the data you require by executing thecommand
objects and manipulate the data usingRecordSet objects. 7. Database
ConnectivitySteps Make a VB application that can be used to connect
to database 8. Go to components 9. Choose Microsoft ADO Data
Control 6.0(OLEDB) 10. Component is added 11. Click on Adodc and go
to its properties 12. Click on Build 13. Select Microsoft Jet 4.0
OLE DB Provider and next 14. Select database and test the
connection 15. From here copy connection string and click ok 16.
Establish ConnectionDim con As New ADODB.ConnectionDim rs As New
ADODB.RecordsetDim cmd As New ADODB.CommandPrivate Sub
Form_Load()con.ConnectionString="Provider=Microsoft.Jet.OLEDB.4.0;DataSource=C:Documents
andSettingsAdministratorDesktopEmployee.mdb"con.Openrs.Open "select
* from employee", con,adOpenDynamic,
adLockOptimisticcmd.ActiveConnection = con 17. Conti..txt_id =
rs.Fields(0)txt_name = rs.Fields(1)txt_desig = rs.Fields(2)txt_add
= rs.Fields(3)txt_sal = rs.Fields(4)txt_doj = rs.Fields(5)txt_phn =
rs.Fields(6)txt_email = rs.Fields(7) 18. How to use Flex Grid in VB
Go to components 19. Choose Microsoft FlexGrid Control 6.0 from
components 20. Select flexgrid from toolbox and drop it in form 21.
Select Data tool from tool box and drop it in form 22. Select
DataSource property of FlexGrid 23. Choose DatabaseName from Data
tool properties 24. Choose your database which you want to use 25.
Choose Recordset property of Data tool 26. Your selected recordset
will be shown in flexgrid 27. How to use data grid in VB Go to
components 28. Select Microsoft DataGrid Control 6.0(OLEDB) 29.
Select data grid from tool box and drop in form 30. Go to Adodc
properties 31. Select Microsoft Jet 4.0 ILE Db Provider 32. Select
database name 33. Test the connection 34. Go to RecordSource select
CommandType as 2- adCmdTable and Table 35. Select DataSource from
data grid properties 36. Your data grid is working 37. References
http://www.w3schools.com http://www.codeproject.com
http://msdn.microsoft.com
