ListObject.Change Event

Occurs when something changes in the ListObject control.

Namespace:  Microsoft.Office.Tools.Excel
Assembly:  Microsoft.Office.Tools.Excel (in Microsoft.Office.Tools.Excel.dll)

Syntax

'Declaration
Event Change As ListObjectChangeHandler

event ListObjectChangeHandler Change

Remarks

This event is raised if the ListObject control is changed by either a programmatic modification or user interaction.

This event does not occur when cells change during a recalculation.

Examples

The following code example creates a ListObject and a Change event handler. To raise the Change event, add text to one of the cells in the ListObject and then press ENTER.

This version is for a document-level customization.

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;
    }
}

This version is for an application-level add-in.

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;
    }
}

.NET Framework Security

• Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

See Also

Reference

ListObject Interface

Microsoft.Office.Tools.Excel Namespace