or

BarSeriesDefinition barDefinition = new BarSeriesDefinition(); barDefinition.Appearance.Fill = new SolidColorBrush( Colors.Blue );ctrlLaneGraph.DefaultSeriesDefinition = barDefinition; SeriesMapping seriesMapping = new SeriesMapping();seriesMapping.LegendLabel = "Number of Items";seriesMapping.SeriesDefinition = new SplineSeriesDefinition(); seriesMapping.ItemMappings.Add(new ItemMapping("ItemStart", DataPointMember.XValue));seriesMapping.ItemMappings.Add(new ItemMapping("ItemPosition", DataPointMember.YValue)); seriesMapping.SeriesDefinition = barDefinition; ctrlLaneGraph.SeriesMappings.Add(seriesMapping); ctrlLaneGraph.ItemsSource = ItemPosisionList; ctrlLaneGraph.DefaultView.ChartArea.AxisX.LayoutMode = AxisLayoutMode.Auto;
<telerik:RadCartesianChart x:Name="chartVariables" ... Zoom="{Binding Zoom, Mode=TwoWay}"PanOffset="{Binding PanOffset, Mode=TwoWay}" ><telerik:RadCartesianChart.Behaviors> <telerik:ChartPanAndZoomBehavior ZoomMode="Both" PanMode="None" /></telerik:RadCartesianChart.Behaviors></telerik:RadCartesianChart>private void chartVariables_PanOffsetChanged(object sender, ChartPanOffsetChangedEventArgs e){ if ((bool)this.btnInvalidate.IsChecked) { DateTimeContinuousAxis axis = chartVariables.HorizontalAxis as DateTimeContinuousAxis; DateTime startDate = axis.ActualVisibleRange.Minimum; // value is ok DateTime endDate = axis.ActualVisibleRange.Maximum; // wrong tbLog.Text = "From : " + startDate.ToString() + " - To : " + endDate.ToString(); chartVariables.Zoom = oldZoom; // cancel the zoom } }