FpSpread1.Sheets[0].AddChart(0, 0, typeof(FarPoint.Web.Chart.BarSeries), 300, 300, 0, 0, FarPoint.Web.Chart.ChartViewType.View2D, true);
FarPoint.Web.Spread.Chart.ChartDataSetting dataSetting = new FarPoint.Web.Spread.Chart.ChartDataSetting(FarPoint.Web.Spread.Chart.EmptyValueStyle.Zero, true);
FarPoint.Web.Spread.Chart.SpreadChart chart = FpSpread1.Sheets[0].Charts[0];
chart.DataSetting = dataSetting;
//chart.DataSetting.EmptyValueStyle = FarPoint.Web.Spread.Chart.EmptyValueStyle.Zero;
//chart.DataSetting.ShowHiddenData = true;