Command- und CommandText-Eigenschaften – Beispiel (VB)

Im folgenden Code wird veranschaulicht, wie Sie die Command-Eigenschaft verwenden, um den Text einer Prozedur zu aktualisieren.

' BeginProcedureTextVB  
Sub Main()  
    On Error GoTo ProcedureTextError  
  
    Dim cnn As New ADODB.Connection  
    Dim cat As New ADOX.Catalog  
    Dim cmd As New ADODB.Command  
  
    ' Open the connection.  
    cnn.Open "Provider='Microsoft.Jet.OLEDB.4.0';" & _  
        "Data Source='Northwind.mdb';"  
  
    ' Open the catalog.  
    Set cat.ActiveConnection = cnn  
  
    ' Get the command.  
    Set cmd = cat.Procedures("CustomerById").Command  
  
    ' Update the CommandText.  
    cmd.CommandText = "Select CustomerId, CompanyName, ContactName " & _  
        "From Customers " & _  
        "Where CustomerId = [CustId]"  
  
    ' Update the procedure.  
    Set cat.Procedures("CustomerById").Command = cmd  
  
    'Clean up.  
    cnn.Close  
    Set cat = Nothing  
    Set cmd = Nothing  
    Set cnn = Nothing  
    Exit Sub  
  
ProcedureTextError:  
    Set cat = Nothing  
    Set cmd = Nothing  
  
    If Not cnn Is Nothing Then  
        If cnn.State = adStateOpen Then cnn.Close  
    End If  
    Set cnn = Nothing  
  
    If Err <> 0 Then  
        MsgBox Err.Source & "-->" & Err.Description, , "Error"  
    End If  
End Sub  
' EndProcedureTextVB  

Weitere Informationen

ActiveConnection-Eigenschaft (ADOX)
Catalog-Objekt (ADOX)
Command-Eigenschaft (ADOX)
Procedure-Objekt (ADOX)
Procedures-Collection (ADOX)