[AccessD] Need ADO ADP help

StaRKeY starkey at wanadoo.nl
Sun Jul 11 11:31:59 CDT 2004


Have you actually tried this Susan?:-) 

In an Access 2002 whitepaper I found the following and it matches my case in
Access 2003 thinking MS has not yet covered this:

In Microsoft Access 2002, it is now possible to use ADO recordsets with
reports in Microsoft Access project files. Unfortunately, the use of the
report Recordset property is limited to project files. If you try to set or
retrieve a report's Recordset property in a Jet database (.mdb) file, you
receive the following error message: 'This feature is not available in an
MBD'.


Regards, 
Eric 

-----Oorspronkelijk bericht----- 
Van: accessd-bounces at databaseadvisors.com
[mailto:accessd-bounces at databaseadvisors.com] Namens Susan Harkins 
Verzonden: zondag 11 juli 2004 18:08 
Aan: 'Access Developers discussion and problem solving' 
Onderwerp: RE: [AccessD] Need ADO ADP help 

  
  
Ofcourse, if someone knows a work-around for the report ADO 'problem' in my
MDB that would also be just fine though I'd rather do not want to use ODBC
DNS.

  
 =============I may not have followed the exact problem -- but Access 2003
supports using Recordset objects as source for forms and reports -- using
the Report object's Recordset property. And, the Recordset can be ADO. 

Susan H. 


Recordset Property 
See AlsoApplies ToExampleSpecificsReturns or sets the ADO Recordset or DAO
Recordset object representing the record source for the specified form,
report, list box control, or combo box control. Read/write.

expression.Recordset 
expression    Required. An expression that returns one of the objects in the

Applies To list. 

Remarks 
You cannot use this property with ODBCDirect recordset types in DAO. 

The Recordset property returns the recordset object that provides the data
being browsed in a form, report, list box control, or combo box control. If
a form is based on a query, for example, referring to the Recordset property
is the equivalent of cloning a Recordset object by using the same query.

However, unlike using the RecordsetClone property, changing which record is
current in the recordset returned by the form's Recordset property also sets
the current record of the form.

This property is available only by using Visual Basic. 

The read/write behavior of the Recordset property is determined by the type
of recordset (ADO or DAO) and the type of data (Jet or SQL) contained in the
recordset identified by the property.

Recordset type Based on SQL data Based on Jet data ADO Read/Write Read/Write
DAO N/A Read/Write 

The following example opens a form, opens a recordset, and then binds the
form to the recordset by setting the form's Recordset property to the newly
created Recordset object.

Global rstSuppliers As ADODB.Recordset 
Sub MakeRW() 
DoCmd.OpenForm "Suppliers" 
Set rstSuppliers = New ADODB.Recordset 
rstSuppliers.CursorLocation = adUseClient rstSuppliers.Open "Select * From
Suppliers", _ CurrentProject.Connection, adOpenKeyset, adLockOptimistic Set
Forms("Suppliers").Recordset = rstSuppliers End Sub

Use the Recordset property: 

To bind multiple forms to a common data set. This allows synchronization of
multiple forms. For example, 
   Set Me.Recordset = Forms!Form1.Recordset 
                
To use methods with the Recordset object that aren't directly supported on
forms. For example, you can use the Recordset property with the ADO Find or
DAO Find methods in a custom dialog for finding a record. 

To wrap a transaction (which can be rolled back) around a set of edits that
affect multiple forms. 
Changing a form's Recordset property may also change the RecordSource,
RecordsetType, and RecordLocks properties. Also, some data-related
properties may be overridden, for example, the Filter, FilterOn, OrderBy,
and OrderByOn properties. 

Calling the Requery method of a form's recordset (for example, 
Forms(0).Recordset.Requery) can cause the form to become unbound. To refresh
the data in a form bound to a recordset, set the RecordSource property of
the form to itself (Forms(0).RecordSource = Forms(0).RecordSource).

When a form is bound to a recordset, an error occurs if you use the Filter
by Form command. 

Example 
The following example uses the Recordset property to create a new copy of
the Recordset object from the current form and then prints the names of the
fields in the Debug window.

Sub Print_Field_Names() 
    Dim rst As DAO.Recordset, intI As Integer 
    Dim fld As Field 

    Set rst = Me.Recordset 
    For Each fld in rst.Fields 
        ' Print field names. 
        Debug.Print fld.Name 
    Next 
End Sub 
                
The next example uses the Recordset property and the Recordset object to
synchronize a recordset with the form's current record. When a company name
is selected from a combo box, the FindFirst method is used to locate the
record for that company, causing the form to display the found record.

Sub SupplierID_AfterUpdate() 
    Dim rst As DAO.Recordset 
    Dim strSearchName As String 

    Set rst = Me.Recordset 
    strSearchName = CStr(Me!SupplierID) 
    rst.FindFirst "SupplierID = " & strSearchName 
    If rst.NoMatch Then 
        MsgBox "Record not found" 
    End If 
    rst.Close 
End Sub 
                
The following code helps to determine what type of recordset is returned by
the Recordset property under different conditions.

Sub CheckRSType() 
    Dim rs as Object 

    Set rs=Forms(0).Recordset 
    If TypeOf rs Is DAO.Recordset Then 
        MsgBox "DAO Recordset" 
    ElseIf TypeOf rs is ADODB.Recordset Then 
        MsgBox "ADO Recordset" 
    End If 
End Sub 
                

-- 
_______________________________________________ 
AccessD mailing list 
AccessD at databaseadvisors.com 
http://databaseadvisors.com/mailman/listinfo/accessd 
Website: http://www.databaseadvisors.com 



  _____  

avast! Antivirus <http://www.avast.com> : Uitgaande bericht is niet besmet. 


Virus Gegevensbestand (VPS): 0428-1, 09-07-2004
Getest op: 11-7-2004 18:31:59
avast! auteursrecht (c) 2000-2004 ALWIL Software.






More information about the AccessD mailing list