codice:
Dim WithEvents adoPrimaryRS As Recordset
Dim mbChangedByCode As Boolean
Dim mvBookMark As Variant
Dim mbEditFlag As Boolean
Dim mbAddNewFlag As Boolean
Dim mbDataChanged As Boolean
Private Sub Form_Load()
Dim db As Connection
Set db = New Connection
db.CursorLocation = adUseClient
db.Open "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source=taty.mdb;"
Set adoPrimaryRS = New Recordset
adoPrimaryRS.Open "select ID,Data,BA1,BA2,BA3,BA4,BA5,CA1,CA2,CA3,CA4,CA5,FI1,FI2,FI3,FI4,FI5,GE1,GE2,GE3,GE4,GE5,MI1,MI2,MI3,MI4,MI5,NA1,NA2,NA3,NA4,NA5,PA1,PA2,PA3,PA4,PA5,RO1,RO2,RO3,RO4,RO5,TO1,TO2,TO3,TO4,TO5,VE1,VE2,VE3,VE4,VE5 from archivio", db, adOpenStatic, adLockOptimistic
Dim oText As TextBox
'Associa le caselle di testo al fornitore di dati
For Each oText In Me.txtFields
Set oText.DataSource = adoPrimaryRS
Next
mbDataChanged = False
End Sub
Private Sub Form_Resize()
On Error Resume Next
lblStatus.Width = Me.Width - 1500
cmdNext.Left = lblStatus.Width + 700
cmdLast.Left = cmdNext.Left + 340
End Sub
Private Sub Form_KeyDown(KeyCode As Integer, Shift As Integer)
If mbEditFlag Or mbAddNewFlag Then Exit Sub
Select Case KeyCode
Case vbKeyEscape
cmdClose_Click
Case vbKeyEnd
cmdLast_Click
Case vbKeyHome
cmdFirst_Click
Case vbKeyUp, vbKeyPageUp
If Shift = vbCtrlMask Then
cmdFirst_Click
Else
cmdPrevious_Click
End If
Case vbKeyDown, vbKeyPageDown
If Shift = vbCtrlMask Then
cmdLast_Click
Else
cmdNext_Click
End If
End Select
End Sub
Private Sub Form_Unload(Cancel As Integer)
Screen.MousePointer = vbDefault
End Sub
Private Sub adoPrimaryRS_MoveComplete(ByVal adReason As ADODB.EventReasonEnum, ByVal pError As ADODB.Error, adStatus As ADODB.EventStatusEnum, ByVal pRecordset As ADODB.Recordset)
'Visualizza la posizione del record corrente per questo gruppo di record
lblStatus.Caption = "Estrazione Numero : " & CStr(adoPrimaryRS.AbsolutePosition)
End Sub
Private Sub adoPrimaryRS_WillChangeRecord(ByVal adReason As ADODB.EventReasonEnum, ByVal cRecords As Long, adStatus As ADODB.EventStatusEnum, ByVal pRecordset As ADODB.Recordset)
'Posizione in cui inserire il codice per la convalida
'L'evento viene richiamato in seguito alle seguenti azioni
Dim bCancel As Boolean
Select Case adReason
Case adRsnAddNew
Case adRsnClose
Case adRsnDelete
Case adRsnFirstChange
Case adRsnMove
Case adRsnRequery
Case adRsnResynch
Case adRsnUndoAddNew
Case adRsnUndoDelete
Case adRsnUndoUpdate
Case adRsnUpdate
End Select
If bCancel Then adStatus = adStatusCancel
End Sub
Private Sub cmdAdd_Click()
On Error GoTo AddErr
With adoPrimaryRS
If Not (.BOF And .EOF) Then
mvBookMark = .Bookmark
End If
.AddNew
lblStatus.Caption = "Aggiunge il record"
mbAddNewFlag = True
SetButtons False
End With
Exit Sub
AddErr:
MsgBox Err.Description
End Sub
Private Sub cmdDelete_Click()
On Error GoTo DeleteErr
With adoPrimaryRS
.Delete
.MoveNext
If .EOF Then .MoveLast
End With
Exit Sub
DeleteErr:
MsgBox Err.Description
End Sub
Private Sub cmdRefresh_Click()
'Necessario solo per applicazioni multiutente
On Error GoTo RefreshErr
adoPrimaryRS.Requery
Exit Sub
RefreshErr:
MsgBox Err.Description
End Sub
Private Sub cmdEdit_Click()
On Error GoTo EditErr
lblStatus.Caption = "Modifica il record"
mbEditFlag = True
SetButtons False
Exit Sub
EditErr:
MsgBox Err.Description
End Sub
Private Sub cmdCancel_Click()
On Error Resume Next
SetButtons True
mbEditFlag = False
mbAddNewFlag = False
adoPrimaryRS.CancelUpdate
If mvBookMark > 0 Then
adoPrimaryRS.Bookmark = mvBookMark
Else
adoPrimaryRS.MoveFirst
End If
mbDataChanged = False
End Sub
Private Sub cmdUpdate_Click()
On Error GoTo UpdateErr
adoPrimaryRS.UpdateBatch adAffectAll
If mbAddNewFlag Then
adoPrimaryRS.MoveLast 'si sposta sul nuovo record
End If
mbEditFlag = False
mbAddNewFlag = False
SetButtons True
mbDataChanged = False
Exit Sub
UpdateErr:
MsgBox Err.Description
End Sub
Private Sub cmdClose_Click()
Unload Me
End Sub
Private Sub cmdFirst_Click()
On Error GoTo GoFirstError
adoPrimaryRS.MoveFirst
mbDataChanged = False
Exit Sub
GoFirstError:
MsgBox Err.Description
End Sub
Private Sub cmdLast_Click()
On Error GoTo GoLastError
adoPrimaryRS.MoveLast
mbDataChanged = False
Exit Sub
GoLastError:
MsgBox Err.Description
End Sub
Private Sub cmdNext_Click()
On Error GoTo GoNextError
If Not adoPrimaryRS.EOF Then adoPrimaryRS.MoveNext
If adoPrimaryRS.EOF And adoPrimaryRS.RecordCount > 0 Then
Beep
'è stata superata la fine e quindi torna indietro
adoPrimaryRS.MoveLast
End If
'visualizza il record corrente
mbDataChanged = False
Exit Sub
GoNextError:
MsgBox Err.Description
End Sub
Private Sub cmdPrevious_Click()
On Error GoTo GoPrevError
If Not adoPrimaryRS.BOF Then adoPrimaryRS.MovePrevious
If adoPrimaryRS.BOF And adoPrimaryRS.RecordCount > 0 Then
Beep
'è stata superata la fine e quindi torna indietro
adoPrimaryRS.MoveFirst
End If
'visualizza il record corrente
mbDataChanged = False
Exit Sub
GoPrevError:
MsgBox Err.Description
End Sub
Private Sub SetButtons(bVal As Boolean)
cmdAdd.Visible = bVal
cmdEdit.Visible = bVal
cmdUpdate.Visible = Not bVal
cmdCancel.Visible = Not bVal
cmdDelete.Visible = bVal
cmdClose.Visible = bVal
cmdRefresh.Visible = bVal
cmdNext.Enabled = bVal
cmdFirst.Enabled = bVal
cmdLast.Enabled = bVal
cmdPrevious.Enabled = bVal
End Sub
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