Public ReadOnly Property Column As Integer

Dim instance As AutoSortingColumnEventArgs
Dim value As Integer
 
value = instance.Column

public int Column {get;}

private void button1Click(object sender, System.EventArgs e)
{
     fpSpread1.ActiveSheet.AutoSortColumn(0);
}

private void fpSpread1_AutoSortingColumn(object sender, FarPoint.Win.Spread.AutoSortingColumnEventArgs e)
{
     MessageBox.Show(e.Column.ToString());
}

Private Sub Button1Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
     FpSpread1.ActiveSheet.AutoSortColumn(0)
End Sub

Private Sub FpSpread1_AutoSortingColumn(ByVal sender As Object, ByVal e As FarPoint.Win.Spread.AutoSortingColumnEventArgs)
Handles FpSpread1.AutoSortingColumn
     MessageBox.Show(e.Column.ToString())
End Sub