Public ReadOnly Property LastColumn As Integer

Dim instance As ColumnWidthChangeExtents
Dim value As Integer
 
value = instance.LastColumn

public int LastColumn {get;}

private void fpSpread1_ColumnWidthChanged(object sender, FarPoint.Win.Spread.ColumnWidthChangedEventArgs e)
{

    foreach (FarPoint.Win.Spread.ColumnWidthChangeExtents c in e.ColumnList)
    {
        MessageBox.Show("The last column whose width changed is " + c.LastColumn.ToString());
    }
    e.View.Sheets[0].AddSelection(0, c.LastColumn, e.View.Sheets[0].RowCount, 1);
}

Private Sub FpSpread1_ColumnWidthChanged(ByVal sender As Object, ByVal e As FarPoint.Win.Spread.ColumnWidthChangedEventArgs)
Handles FpSpread1.ColumnWidthChanged
    Dim c As FarPoint.Win.Spread.ColumnWidthChangeExtents
    For Each c In e.ColumnList
        MessageBox.Show("The last column whose width changed is " & c.LastColumn.ToString())
    Next
    e.View.Sheets(0).AddSelection(0, c.LastColumn, e.View.Sheets(0).RowCount, 1)
End Sub