Property AutoPostBack As Boolean

Dim instance As IAutoPostBack
Dim value As Boolean
 
instance.AutoPostBack = value
 
value = instance.AutoPostBack

bool AutoPostBack {get; set;}

FarPoint.Web.Spread.ComboBoxCellType cb = new FarPoint.Web.Spread.ComboBoxCellType(new string[] {"One", "Two", "Three"});
cb.ShowButton = true;
FpSpread1.ActiveSheetView.Cells[0, 0].CellType = cb;
FpSpread1.EnableClientScript = false;

private void FpSpread1EditCommand(object sender, FarPoint.Web.Spread.SpreadCommandEventArgs e) 
{
    bool ap;
    FarPoint.Web.Spread.Editor.IEditor ed;
    ed = e.SheetView.Cells[e.CommandArgument, 0].Editor;
    if (fpEditor is FarPoint.Web.Spread.IAutoPostBack) 
    {
        ap = ((FarPoint.Web.Spread.IAutoPostBack) ed).AutoPostBack; 
        Response.Write(ap.ToString()); 
    }
}

Dim cb As New FarPoint.Web.Spread.ComboBoxCellType(New String() {"One", "Two", "Three"})
cb.ShowButton = True
FpSpread1.ActiveSheetView.Cells(0, 0).CellType = cb
FpSpread1.EnableClientScript = False

Private Sub FpSpread1EditCommand(ByVal sender As Object, ByVal e As FarPoint.Web.Spread.SpreadCommandEventArgs) Handles FpSpread1.EditCommand
    Dim ap As Boolean
    Dim ed As FarPoint.Web.Spread.Editor.IEditor
    ed = e.SheetView.Cells(e.CommandArgument, 0).Editor
    If TypeOf ed Is FarPoint.Web.Spread.IAutoPostBack Then
        ap = CType(ed, FarPoint.Web.Spread.IAutoPostBack).AutoPostBack
        Response.Write(ap.ToString())
    End If 
End Sub