No it does not fix the problem, this is  what I have know :In addition I want to see the first points and the last points of the curve and and have both bars closer (2 by 2) here is my scenario :

            //column layers use a string, GroupBySeries x axis
            AxisItem columnXAxis = new AxisItem(ChartAlphaRealized, AxisNumber.X_Axis);
            columnXAxis.DataType = AxisDataType.String;
            columnXAxis.SetLabelAxisType = Infragistics.UltraChart.Core.Layers.SetLabelAxisType.GroupBySeries;
            columnXAxis.Labels.ItemFormat = AxisItemLabelFormat.ItemLabel;
            columnXAxis.Labels.SeriesLabels.Format = AxisSeriesLabelFormat.SeriesLabel;
            columnXAxis.MajorGridLines.Visible = false;
            columnXAxis.LineDrawStyle = LineDrawStyle.Solid;
            ChartAlphaRealized.Axis.X.TickmarkStyle = AxisTickStyle.DataInterval;
            columnXAxis.Visible = false;
            area.Axes.Add(columnXAxis);

            //line layers use a string, ContinuousData x axis
            AxisItem lineXAxis = new AxisItem(ChartAlphaRealized, AxisNumber.X_Axis);
            lineXAxis.DataType = AxisDataType.String;
            lineXAxis.SetLabelAxisType = Infragistics.UltraChart.Core.Layers.SetLabelAxisType.ContinuousData;
            lineXAxis.MajorGridLines.Visible = false;
            lineXAxis.Labels.ItemFormat = AxisItemLabelFormat.Custom;
            lineXAxis.Labels.ItemFormatString = "<ITEM_LABEL>";
            lineXAxis.LineDrawStyle = LineDrawStyle.Solid;
            lineXAxis.Visible = true;
            lineXAxis.LineColor = Color.Black;
            lineXAxis.Labels.SeriesLabels.Format = AxisSeriesLabelFormat.SeriesLabel;
            ChartAlphaRealized.Axis.X.TickmarkStyle = AxisTickStyle.DataInterval;
            area.Axes.Add(lineXAxis);

            //the layers can share the numeric y axis.
            AxisItem YAxis = new AxisItem(ChartAlphaRealized, AxisNumber.Y_Axis);
            //area.Axes.Clear();
            YAxis.DataType = AxisDataType.Numeric;
            YAxis.OrientationType = AxisNumber.Y_Axis;
            YAxis.MajorGridLines.Visible = false;
            YAxis.RangeType = AxisRangeType.Custom;
            if ( MAxAlphaCumulValue <= 1) MAxAlphaCumulValue = 1;
            YAxis.RangeMax = Math.Round(MAxAlphaCumulValue);
            YAxis.RangeMin = Math.Round(MinAlphaCumulValue);
            YAxis.TickmarkInterval = GlobalClass.StepCalc(MinAlphaCumulValue, MAxAlphaCumulValue);
            YAxis.TickmarkStyle = AxisTickStyle.DataInterval;
            YAxis.Labels.ItemFormatString = "<DATA_VALUE:##.##>";
            area.Axes.Add(YAxis);

            //the layers can share the numeric y axis.
            AxisItem YAxis2 = new AxisItem(ChartAlphaRealized, AxisNumber.Y2_Axis);
            //area.Axes.Clear();
            YAxis2.DataType = AxisDataType.Numeric;
            YAxis2.Labels.ItemFormat = AxisItemLabelFormat.DataValue;
            YAxis2.MajorGridLines.Visible = false;
            YAxis2.RangeType = AxisRangeType.Custom;
            YAxis2.RangeMax = MAxVolumeCumulValue;
            YAxis2.RangeMin = 0;
            YAxis2.LineColor = Color.LightGreen;
            YAxis2.Labels.ItemFormatString = "<DATA_VALUE:##.##>";
            YAxis2.TickmarkInterval = 5;
            YAxis2.TickmarkStyle = AxisTickStyle.DataInterval;
            area.Axes.Add(YAxis2);

            ChartLayerAppearance columnLayer = new ChartLayerAppearance();
            columnLayer.AxisX = columnXAxis;
            columnLayer.AxisY = YAxis2;
            columnLayer.ChartArea = area;
            columnLayer.ChartType = ChartType.ColumnChart;
            columnLayer.Series.Add(VolumeNum);
            columnLayer.Series.Add(VolumeNumDV);
            columnLayer.SwapRowsAndColumns = true;
            ChartAlphaRealized.CompositeChart.ChartLayers.Add(columnLayer);

            ChartLayerAppearance lineLayer = new ChartLayerAppearance();
            lineLayer.AxisX = lineXAxis;
            lineLayer.AxisY = YAxis;
            lineLayer.ChartArea = area;
            lineLayer.ChartType = ChartType.SplineChart;
            lineLayer.Series.Add(AlphaReal_st);
            lineLayer.Series.Add(seriesInit);
            lineLayer.Series.Add(VWAP_St);
            lineLayer.Series.Add(ClosedPrice_St);
            lineLayer.Series.Add(VWAP_Sector);
            lineLayer.Series.Add(ClosedPrice_Sector);
            lineLayer.Series.Add(TradedPrice_Sector);
            lineLayer.Series.Add(seriesInit_Sector);
            ChartAlphaRealized.CompositeChart.ChartLayers.Add(lineLayer);

            //create LineAppearance for 1st NumericTimeSeries      
            ChartLayerAppearance lineLayer_line = new ChartLayerAppearance();
            lineLayer_line.AxisX = lineXAxis;
            lineLayer_line.AxisY = YAxis;
            lineLayer_line.ChartArea = area;
            lineLayer_line.ChartType = ChartType.LineChart;
            LineAppearance la = new LineAppearance(ChartAlphaRealized);
            la.IconAppearance.Icon = SymbolIcon.None;
            la.Thickness = 2;
            LineChartAppearance lca = new LineChartAppearance();
            lca.LineAppearances.Add(la);
            lineLayer_line.ChartTypeAppearance = lca;
            lineLayer_line.Series.Add(SerieLineZeros);


            ChartAlphaRealized.CompositeChart.ChartLayers.Add(lineLayer_line);

            TradedPrice_Sector.Visible = false;

            NewAlphaChart = ChartAlphaRealized;
            tab_AlphaRealized.Controls.Add(NewAlphaChart);

            ChartPureAlpha.Data.DataBind();
            ChartAlphaRealized.Data.DataBind();

thanks

Hello,

Could you please try the following code:

ultraChart1.Axis.X.TickmarkStyle = AxisTickStyle.DataInterval;

Please feel free to let me know if I misunderstood you or if you have any other questions.