Public ReadOnly Property FilterString As String

Dim instance As AutoFilteredColumnEventArgs
Dim value As String
 
value = instance.FilterString

public string FilterString {get;}

private void fpSpread1_AutoFilteredColumn(object sender, FarPoint.Win.Spread.AutoFilteredColumnEventArgs e) 
{ 
e.Sheet.Columns(e.Column).BackColor = Color.Yellow;
MessageBox.Show("The column was filtered by " + e.FilterString);
} 

Private Sub FpSpread1_AutoFilteredColumn(ByVal sender As Object, ByVal e As
FarPoint.Win.Spread.AutoFilteredColumnEventArgs) Handles FpSpread1.AutoFilteredColumn
e.Sheet.Columns(e.Column).BackColor = Color.Yellow
MessageBox.Show("The column was filtered by " & e.FilterString)
End Sub