NextRecordset-Methode (Beispiel) (VB)

In diesem Beispiel wird die methode NextRecordset verwendet, um die Daten in einem Recordset anzuzeigen, das eine zusammengesetzte Befehlsanweisungen verwendet, die aus drei separaten SELECT-Anweisungen bestehen.

'BeginNextRecordsetVB  
  
    'To integrate this code  
    'replace the data source and initial catalog values  
    'in the connection string  
  
Public Sub Main()  
    On Error GoTo ErrorHandler  
  
    ' connection and recordset variables  
    Dim rstCompound As ADODB.Recordset  
    Dim Cnxn As ADODB.Connection  
    Dim strCnxn As String  
    Dim SQLCompound As String  
  
    Dim intCount As Integer  
  
    ' Open connection  
    Set Cnxn = New ADODB.Connection  
    strCnxn = "Provider='sqloledb';Data Source='MySqlServer';" & _  
        "Initial Catalog='Pubs';Integrated Security='SSPI';"  
    Cnxn.Open strCnxn  
  
    ' Open compound recordset  
    Set rstCompound = New ADODB.Recordset  
    SQLCompound = "SELECT * FROM Authors; " & _  
        "SELECT * FROM stores; " & _  
        "SELECT * FROM jobs"  
    rstCompound.Open SQLCompound, Cnxn, adOpenStatic, adLockReadOnly, adCmdText  
  
    ' Display results from each SELECT statement  
    intCount = 1  
    Do Until rstCompound Is Nothing  
        Debug.Print "Contents of recordset #" & intCount  
  
        Do Until rstCompound.EOF  
            Debug.Print , rstCompound.Fields(0), rstCompound.Fields(1)  
            rstCompound.MoveNext  
        Loop  
  
        Set rstCompound = rstCompound.NextRecordset  
        intCount = intCount + 1  
    Loop  
  
    ' clean up  
    Cnxn.Close  
    Set rstCompound = Nothing  
    Set Cnxn = Nothing  
    Exit Sub  
  
ErrorHandler:  
    ' clean up  
    If Not rstCompound Is Nothing Then  
        If rstCompound.State = adStateOpen Then rstCompound.Close  
    End If  
    Set rstCompound = Nothing  
  
    If Not Cnxn Is Nothing Then  
        If Cnxn.State = adStateOpen Then Cnxn.Close  
    End If  
    Set Cnxn = Nothing  
  
    If Err <> 0 Then  
        MsgBox Err.Source & "-->" & Err.Description, , "Error"  
    End If  
End Sub  
'EndNextRecordsetVB  

Siehe auch

NextRecordset-Methode (ADO)
Recordset-Objekt (ADO)