Public Property AutoFilterIndex As Integer

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

public int AutoFilterIndex {get; set;}

protected void Page_Load(object sender, EventArgs e)
        {
            if (IsPostBack) return;
            FpSpread1.ActiveSheetView.ColumnHeader.RowCount = 3;
            FpSpread1.ActiveSheetView.ColumnHeader.Columns[1].AutoFilterIndex = 1;
            FpSpread1.ActiveSheetView.ColumnHeader.Columns[0].AutoFilterIndex = 2;
            Random rnd = new Random();
            for (int row = 0; row < FpSpread1.ActiveSheetView.RowCount; row++)
            {
                for (int col = 0; col < FpSpread1.ActiveSheetView.ColumnCount; col++)
                {
                    FpSpread1.ActiveSheetView.Cells[row, col].Text = rnd.Next(100).ToString();
                }
            }
            FarPoint.Web.Spread.FilterColumnDefinition fcd0 = new FarPoint.Web.Spread.FilterColumnDefinition(0,
              FarPoint.Web.Spread.FilterListBehavior.SortByMostOccurrences | FarPoint.Web.Spread.FilterListBehavior.Default);
            FarPoint.Web.Spread.FilterColumnDefinition fcd1 = new FarPoint.Web.Spread.FilterColumnDefinition(1,
              FarPoint.Web.Spread.FilterListBehavior.SortByMostOccurrences | FarPoint.Web.Spread.FilterListBehavior.Default);
            FarPoint.Web.Spread.HideRowFilter hf = new FarPoint.Web.Spread.HideRowFilter(FpSpread1.ActiveSheetView);
            hf.AddColumn(fcd0);
            hf.AddColumn(fcd1);
            FpSpread1.ActiveSheetView.RowFilter = hf;
        }

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If (IsPostBack) Then
            Return
        End If        
        FpSpread1.ActiveSheetView.ColumnHeader.RowCount = 3
        FpSpread1.ActiveSheetView.ColumnHeader.Columns(1).AutoFilterIndex = 1
        FpSpread1.ActiveSheetView.ColumnHeader.Columns(0).AutoFilterIndex = 2
        Dim rnd As New Random()
        For row As Integer = 0 To FpSpread1.ActiveSheetView.RowCount - 1
            For col As Integer = 0 To FpSpread1.ActiveSheetView.ColumnCount - 1
                FpSpread1.ActiveSheetView.Cells(row, col).Text = rnd.[Next](100).ToString()
            Next
        Next
        Dim fcd0 As New FarPoint.Web.Spread.FilterColumnDefinition(0, FarPoint.Web.Spread.FilterListBehavior.SortByMostOccurrences Or FarPoint.Web.Spread.FilterListBehavior.[Default])
        Dim fcd1 As New FarPoint.Web.Spread.FilterColumnDefinition(1, FarPoint.Web.Spread.FilterListBehavior.SortByMostOccurrences Or FarPoint.Web.Spread.FilterListBehavior.[Default])
        Dim hf As New FarPoint.Web.Spread.HideRowFilter(FpSpread1.ActiveSheetView)
        hf.AddColumn(fcd0)
        hf.AddColumn(fcd1)
        FpSpread1.ActiveSheetView.RowFilter = hf
End Sub