I´m using Nevron chart to plot some .csv files and I need to show the data Labels of the Series. But when I use the properties "Serie.DataLabelStyle.Visible = true" it doesn´t work.

This is the code that I´m using:

To Load the config of the Chart:

private void LoadChartConfig()
{
nccGraficos.Legends.Clear();
_nchChart = nccGraficos.Charts[0];
_nchChart.Axis(StandardAxis.PrimaryY).View = new NRangeAxisView(new NRange1DD((double)nudPrimMinY.Value, (double)nudPrimMaxY.Value));
_nchChart.Axis(StandardAxis.SecondaryY).View = new NRangeAxisView(new NRange1DD((double)nudSecMinY.Value, (double)nudSecMaxY.Value));
_nchChart.Axis(StandardAxis.SecondaryY).Visible = false;
_nchChart.LabelLayout.EnableLabelAdjustment = true;
nccGraficos.Panels.Clear();
nccGraficos.Panels.Add(_nchChart);
_nchChart.BoundsMode = BoundsMode.Stretch;
_nchChart.Dock = DockStyle.Fill;
_nchChart.Padding = new NMarginsL(
new NLength(1, NRelativeUnit.ParentPercentage),
new NLength(5, NRelativeUnit.ParentPercentage),
new NLength(1, NRelativeUnit.ParentPercentage),
new NLength(5, NRelativeUnit.ParentPercentage));

NAxis axis = _nchChart.Axis(StandardAxis.PrimaryX);
NDateTimeScaleConfigurator dateTimeScale = new NDateTimeScaleConfigurator();
dateTimeScale.MajorGridStyle.LineStyle.Pattern = LinePattern.Dot;
dateTimeScale.MajorGridStyle.SetShowAtWall(ChartWallType.Back, true);
dateTimeScale.MajorGridStyle.SetShowAtWall(ChartWallType.Floor, false);
dateTimeScale.MaxTickCount = 5;
dateTimeScale.MajorTickMode = MajorTickMode.AutoMaxCount;
NDateTimeUnit[] autoUnits = new NDateTimeUnit[] { NDateTimeUnit.Hour, NDateTimeUnit.Minute, NDateTimeUnit.Second, NDateTimeUnit.Millisecond };
dateTimeScale.AutoDateTimeUnits = autoUnits;
dateTimeScale.RoundToTickMin = false;
dateTimeScale.RoundToTickMax = false;
dateTimeScale.EnableUnitSensitiveFormatting = false;
dateTimeScale.LabelValueFormatter = new NDateTimeValueFormatter("HH:mm:ss.fff");
dateTimeScale.AutoMinorTicks = true;
axis.ScaleConfigurator = dateTimeScale;

NDateTimeAxisPagingView pageview = new NDateTimeAxisPagingView();
pageview.Enabled = true;
double Span = DateTime.Now.AddSeconds(10).ToOADate() - DateTime.Now.ToOADate();
pageview.MinPageLength = Span;
_nchChart.Axis(StandardAxis.PrimaryX).PagingView = pageview;
nccGraficos.Controller.Tools.Add(new NAxisScrollTool());

NCartesianChart chart1 = (NCartesianChart)nccGraficos.Charts[0];
chart1.Axis(StandardAxis.PrimaryX).ScrollBar.Visible = true;
chart1.Axis(StandardAxis.PrimaryX).ScrollBar.ResetButton.Visible = false;

nccGraficos.Controller.Selection.Add(chart1);
nccGraficos.Settings.RenderSurface = RenderSurface.Window;
this.lblNomeTela.Text = "Gráfico de Visualização de Canais";
}

To Add Series to the Chart:
public void AddChanneltoDVG(NLineSeries Serie, Color NewColor, int SelectValue, string ChannelName)
{
DataGridViewRow dr = new DataGridViewRow();
dr.CreateCells(_grdCanais);
dr.Cells[0].Value = ChannelName;
dr.Cells[2].Value = SelectValue;
dr.Cells[1].Style.BackColor = NewColor;
dr.Cells[3].Value = Serie.Name;
_grdCanais.Rows.Add(dr);

DataGridViewRow dr2 = new DataGridViewRow();
dr2.CreateCells(_grdEstatistica);
dr2.Cells[0].Value = ChannelName;
dr2.Cells[4].Value = Serie.Name;
_grdEstatistica.Rows.Add(dr2);

_nchChart.Series.Add(Serie);
Serie.SamplingMode = SeriesSamplingMode.Enabled;
Serie.BorderStyle.Color = NewColor;
Serie.InflateMargins = true;
Serie.UseXValues = true;
Serie.MultiLineMode = MultiLineMode.Series;
Serie.SamplingMode = SeriesSamplingMode.Enabled;
Serie.BorderStyle.Width = new NLength(1.5f);

switch (SelectValue)
{
case 0:
Serie.DisplayOnAxis((int)StandardAxis.PrimaryY, true);
Serie.DisplayOnAxis((int)StandardAxis.SecondaryY, false);
break;
case 1:
Serie.DisplayOnAxis((int)StandardAxis.SecondaryY, true);
Serie.DisplayOnAxis((int)StandardAxis.PrimaryY, false);
break;
default:
NAxis customAxis = CreateCustomAxis(_nchChart, NewColor);
Serie.DisplayOnAxis((int)StandardAxis.PrimaryY, false);
Serie.DisplayOnAxis((int)StandardAxis.SecondaryY, false);
Serie.DisplayOnAxis(customAxis.AxisId, true);
break;
}
_bolDropFlag = true;
_grdCanais.RefreshEdit();

}

And to enable the Labels:

private void checkBox1_CheckedChanged(object sender, EventArgs e)
{
foreach (NLineSeries Serie in _nchChart.Series)
{
Serie.DataLabelStyle.Visible = true;
Serie.DataLabelStyle.Format = " < value >";
Serie.DataLabelStyle.ArrowLength = new NLength(0);
Serie.DataLabelStyle.ArrowStrokeStyle.Width = new NLength(0, NGraphicsUnit.Pixel);
Serie.DataLabelStyle.TextStyle.BackplaneStyle.Shape = BackplaneShape.Ellipse;
Serie.DataLabelStyle.TextStyle.BackplaneStyle.FillStyle = new NColorFillStyle(Color.OldLace);
Serie.DataLabelStyle.TextStyle.BackplaneStyle.StandardFrameStyle.InnerBorderColor = Color.DarkOrange;

}
nccGraficos.Refresh();
}

Any ideas why doens´t work?