Evento ListObject.Change
Si verifica quando si apportano modifiche nel controllo ListObject.
Spazio dei nomi: Microsoft.Office.Tools.Excel
Assembly: Microsoft.Office.Tools.Excel (in Microsoft.Office.Tools.Excel.dll)
Sintassi
'Dichiarazione
Event Change As ListObjectChangeHandler
event ListObjectChangeHandler Change
Note
Questo evento viene generato se il controllo ListObject cambia in seguito a una modifica a livello di codice o all'interazione con l'utente.
Questo evento non si verifica quando le celle cambiano durante un'operazione di ricalcolo.
Esempi
Nell'esempio di codice riportato di seguito viene creato un controllo ListObject e un gestore per l'evento Change. Per generare l'evento Change, aggiungere del testo in una delle celle del controllo ListObject, quindi premere INVIO.
Questa versione è valida per una personalizzazione a livello di documento.
WithEvents ChangeList As Microsoft.Office.Tools.Excel.ListObject
Private Sub ListObject_Change()
ChangeList = Me.Controls.AddListObject( _
Me.Range("A1", "C4"), "ChangeList")
End Sub
Sub List1_Change(ByVal targetRange As _
Microsoft.Office.Interop.Excel.Range, _
ByVal changedRanges As Microsoft.Office.Tools.Excel.ListRanges) _
Handles ChangeList.Change
Dim cellAddress As String = targetRange.Address( _
ReferenceStyle:=Excel.XlReferenceStyle.xlA1)
Select Case changedRanges
Case Microsoft.Office.Tools.Excel.ListRanges.DataBodyRange
MsgBox("The cells at range " & cellAddress & _
" in the data body changed.")
Case Microsoft.Office.Tools.Excel.ListRanges.HeaderRowRange
MsgBox("The cells at range " & cellAddress & _
" in the header row changed.")
Case Microsoft.Office.Tools.Excel.ListRanges.TotalsRowRange
MsgBox("The cells at range " & cellAddress & _
" in the totals row changed.")
Case Else
MsgBox("The cells at range " & cellAddress & _
" changed.")
End Select
End Sub
private void ListObject_Change()
{
Microsoft.Office.Tools.Excel.ListObject list1 =
this.Controls.AddListObject(
this.Range["A1", "C4"], "list1");
list1.Change += new Microsoft.Office.Tools.Excel.
ListObjectChangeHandler(list1_Change);
}
void list1_Change(Microsoft.Office.Interop.Excel.Range
targetRange, Microsoft.Office.Tools.Excel.ListRanges
changedRanges)
{
string cellAddress = targetRange.get_Address(
missing, missing, Excel.XlReferenceStyle.xlA1,
missing, missing);
switch (changedRanges)
{
case Microsoft.Office.Tools.Excel.ListRanges.DataBodyRange:
MessageBox.Show("The cells at range " + cellAddress +
" in the data body changed.");
break;
case Microsoft.Office.Tools.Excel.ListRanges.HeaderRowRange:
MessageBox.Show("The cells at range " + cellAddress +
" in the header row changed.");
break;
case Microsoft.Office.Tools.Excel.ListRanges.TotalsRowRange:
MessageBox.Show("The cells at range " + cellAddress +
" in the totals row changed.");
break;
default:
MessageBox.Show("The cells at range " + cellAddress +
" changed.");
break;
}
}
Questa versione è valida per un componente aggiuntivo a livello di applicazione.
WithEvents ChangeList As ListObject
Private Sub ListObject_Change()
Dim NativeWorksheet As Microsoft.Office.Interop.Excel.Worksheet =
Me.Application.Worksheets(1)
Dim vstoWorksheet As Microsoft.Office.Tools.Excel.Worksheet =
Globals.Factory.GetVstoObject(NativeWorksheet)
ChangeList = vstoWorksheet.Controls.AddListObject( _
vstoWorksheet.Range("A1", "C4"), "ChangeList")
End Sub
Sub List1_Change(ByVal targetRange As _
Microsoft.Office.Interop.Excel.Range, _
ByVal changedRanges As Microsoft.Office.Tools.Excel.ListRanges) _
Handles ChangeList.Change
Dim cellAddress As String = targetRange.Address( _
ReferenceStyle:=Excel.XlReferenceStyle.xlA1)
Select Case changedRanges
Case ListRanges.DataBodyRange
MsgBox("The cells at range " & cellAddress & _
" in the data body changed.")
Case ListRanges.HeaderRowRange
MsgBox("The cells at range " & cellAddress & _
" in the header row changed.")
Case ListRanges.TotalsRowRange
MsgBox("The cells at range " & cellAddress & _
" in the totals row changed.")
Case Else
MsgBox("The cells at range " & cellAddress & _
" changed.")
End Select
End Sub
private void ListObject_Change()
{
Worksheet vstoWorksheet =
Globals.Factory.GetVstoObject(this.Application.ActiveWorkbook.Worksheets[1]);
ListObject list1 =
vstoWorksheet.Controls.AddListObject(
vstoWorksheet.Range["A1", "C4"], "list1");
list1.Change += new ListObjectChangeHandler(list1_Change);
}
void list1_Change(Microsoft.Office.Interop.Excel.Range
targetRange, Microsoft.Office.Tools.Excel.ListRanges
changedRanges)
{
string cellAddress = targetRange.get_Address(
missing, missing, Excel.XlReferenceStyle.xlA1,
missing, missing);
switch (changedRanges)
{
case ListRanges.DataBodyRange:
System.Windows.Forms.MessageBox.Show("The cells at range " + cellAddress +
" in the data body changed.");
break;
case ListRanges.HeaderRowRange:
System.Windows.Forms.MessageBox.Show("The cells at range " + cellAddress +
" in the header row changed.");
break;
case ListRanges.TotalsRowRange:
System.Windows.Forms.MessageBox.Show("The cells at range " + cellAddress +
" in the totals row changed.");
break;
default:
System.Windows.Forms.MessageBox.Show("The cells at range " + cellAddress +
" changed.");
break;
}
}
Sicurezza di .NET Framework
- Attendibilità totale per il chiamante immediato. Impossibile utilizzare questo membro in codice parzialmente attendibile. Per ulteriori informazioni, vedere Utilizzo di librerie da codice parzialmente attendibile.