Exemple des propriétés CursorType, LockType et EditMode
Cet exemple montre comment définir les propriétés CursorType et LockType avant d’ouvrir un Recordset. Il affiche également la valeur de la propriété EditMode dans différentes conditions. La fonction EditModeOutput est requise pour que cette procédure s’exécute.
'BeginEditModeVB
'To integrate this code
'replace the data source and initial catalog values
'in the connection string
Public Sub Main()
On Error GoTo ErrorHandler
' recordset variables
Dim rstEmployees As ADODB.Recordset
Dim Cnxn As ADODB.Connection
Dim strCnxn As String
Dim SQLEmployees As String
' open connection
Set Cnxn = New ADODB.Connection
strCnxn = "Provider='sqloledb';Data Source='MySqlServer';" & _
"Initial Catalog='Pubs';Integrated Security='SSPI';"
Cnxn.Open strCnxn
' set recordset properties through object refs
' instead of through arguments to Open method
Set rstEmployees = New ADODB.Recordset
Set rstEmployees.ActiveConnection = Cnxn
rstEmployees.CursorLocation = adUseClient
rstEmployees.CursorType = adOpenStatic
rstEmployees.LockType = adLockBatchOptimistic
' open recordset with data from Employee table
SQLEmployees = "employee"
rstEmployees.Open SQLEmployees, , , , adCmdTable
' Show the EditMode property under different editing states
rstEmployees.AddNew
rstEmployees!emp_id = "T-T55555M"
rstEmployees!fname = "temp_fname"
rstEmployees!lname = "temp_lname"
'call function below
'to output results to debug window
EditModeOutput "After AddNew:", rstEmployees.EditMode
rstEmployees.UpdateBatch
EditModeOutput "After UpdateBatch:", rstEmployees.EditMode
rstEmployees!fname = "test"
EditModeOutput "After Edit:", rstEmployees.EditMode
rstEmployees.Close
' Delete new record because this is a demonstration
Cnxn.Execute "DELETE FROM employee WHERE emp_id = 'T-T55555M'"
' clean up
Cnxn.Close
Set rstEmployees = Nothing
Set Cnxn = Nothing
Exit Sub
ErrorHandler:
' clean up
If Not rstEmployees Is Nothing Then
If rstEmployees.State = adStateOpen Then rstEmployees.Close
End If
Set rstEmployees = 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
Public Function EditModeOutput(strTemp As String, _
intEditMode As Integer)
' Print report based on the value of the EditMode
' property
Debug.Print strTemp
Debug.Print " EditMode = ";
Select Case intEditMode
Case adEditNone
Debug.Print "adEditNone"
Case adEditInProgress
Debug.Print "adEditInProgress"
Case adEditAdd
Debug.Print "adEditAdd"
End Select
End Function
'EndEditModeVB
Voir aussi
CursorType, propriété (ADO)
CursorTypeEnum
EditMode, propriété
EditModeEnum
LockType, propriété (ADO)
LockTypeEnum
Recordset, objet (ADO)
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