Allow user to export current view as an image.

To reproduce:

Use the following code with RadChartView: 

this.Chart.Series.Add(new LineSeries());


for (int i = 0; i < 50; i++)
{
    if (i == 10)
    {
        this.Chart.Series[0].DataPoints.Add(new CategoricalDataPoint(1));
        continue;
    }


    this.Chart.Series[0].DataPoints.Add(new CategoricalDataPoint(0));
}

this.Chart.ShowGrid = true;

You will see that the point will not be rendered correctly and will be taller than 1.

Add the ability a user to be able to use a Custom DashStyle in the following scenario:

this.Chart.ShowLegend = true;
this.Chart.Series.Add(new LineSeries() { LegendTitle = "DDDD" });
this.Chart.ChartElement.LegendElement.Items[0].Element.BorderDashStyle = System.Drawing.Drawing2D.DashStyle.Custom;

for (int i = 0; i < 10; i++)
{
    this.Chart.Series[0].DataPoints.Add(i);
}

The following article describes how to use a Custom DashStyle: How to: Draw a Custom Dashed Line

To reproduce:

Setup the following RadChartView:

this.Chart.ShowLegend = true;
this.Chart.Series.Add(new LineSeries() { LegendTitle = "DDDD" });
this.Chart.ChartElement.LegendElement.Items[0].Element.BorderDashStyle = System.Drawing.Drawing2D.DashStyle.DashDotDot;


for (int i = 0; i < 10; i++)
{
    this.Chart.Series[0].DataPoints.Add(i);
}


You will see that although that you have changed the BorderDashStyle of the Element, the LineSerie will be drawn normally.

When one adds data points with negative and positive values, the negative ones should go below the 0, for example, with the following data:

AreaSeries areaSeries = new AreaSeries();
areaSeries.DataPoints.Add(new CategoricalDataPoint(5, "Jan"));
areaSeries.DataPoints.Add(new CategoricalDataPoint(-10, "Apr"));

Resolution: 
To use the functionality one should set the StartPositionAxis and StartPositionValue properties of an axis. The first property is the axis along which the current axis will be aligned. The second is the value where the current axis should be positioned.
Here is a sample code: 
AreaSeries areaSeries = new AreaSeries();
areaSeries.DataPoints.Add(new CategoricalDataPoint(13, "Jan"));
areaSeries.DataPoints.Add(new CategoricalDataPoint(20, "Apr"));
areaSeries.DataPoints.Add(new CategoricalDataPoint(-15, "Jul"));
areaSeries.DataPoints.Add(new CategoricalDataPoint(16, "Oct"));
this.radChartView1.Series.Add(areaSeries);

areaSeries.HorizontalAxis.StartPositionAxis = areaSeries.VerticalAxis;
areaSeries.HorizontalAxis.StartPositionValue = 0; 

To reproduce:

Add a RadChartView to a Form. Use the following code:

this.Chart.AreaType = ChartAreaType.Pie;
this.Chart.ShowLegend = true;
PieSeries series = new PieSeries();
series.DataPoints.Add(new PieDataPoint(50, "Germany"));
series.DataPoints.Add(new PieDataPoint(70, "United States"));
series.DataPoints.Add(new PieDataPoint(40, "France"));
series.DataPoints.Add(new PieDataPoint(25, "United Kingdom"));
series.ShowLabels = true;
this.Chart.Series.Add(series);

Workaround:

Private Sub LegendElement_VisualItemCreating(sender As Object, e As LegendItemElementCreatingEventArgs)
    Dim pieElement As PiePointElement = DirectCast(e.LegendItem.Element, PiePointElement)
    Dim dataPoint As PieDataPoint = DirectCast(pieElement.DataPoint, PieDataPoint)
    e.LegendItem.Title = dataPoint.Name
End Sub

Add BarSeries with several CategoricalDataPoint with some long category text. 
Change the chart's area orientation, then you will notice that the AxisLabelElements overlaps the axis

The Step Line chart type is similar to the Line chart type, but it does not use the shortest distance to connect two data points. Instead, this chart type uses vertical and horizontal lines to connect the data points in a series forming a step-like progression.

To reproduce: -add RadChartView and use the following code: this.radChartView1.AreaType = ChartAreaType.Pie; PieSeries series = new PieSeries(); series.DataPoints.Add(new PieDataPoint(50, "Germany")); series.DataPoints.Add(new PieDataPoint(70, "United States")); series.DataPoints.Add(new PieDataPoint(40, "France")); series.DataPoints.Add(new PieDataPoint(25, "United Kingdom")); series.ShowLabels = true; this.radChartView1.Series.Add(series);

Workaround: recreate the ChartDataPointElementController: this.radChartView1.AreaType = ChartAreaType.Pie; this.radChartView1.Controllers.RemoveAt(0); this.radChartView1.Controllers.Add(new ChartDataPointElementController()); PieSeries series = new PieSeries(); series.DataPoints.Add(new PieDataPoint(50, "Germany")); series.DataPoints.Add(new PieDataPoint(70, "United States")); series.DataPoints.Add(new PieDataPoint(40, "France")); series.DataPoints.Add(new PieDataPoint(25, "United Kingdom")); series.ShowLabels = true; this.radChartView1.Series.Add(series);

To reproduce:
-add RadChartView and use the following code:
public Form1()
{
    InitializeComponent();

    radChartView1.SelectionMode = ChartSelectionMode.MultipleDataPoints;
    MessageBox.Show(radChartView1.SelectionMode.ToString());
    radChartView1.SelectionMode = ChartSelectionMode.MultipleDataPoints;
    MessageBox.Show(radChartView1.SelectionMode.ToString());
}

To reproduce:
1.Add RadChartView
2.Set vertical axis to be LinearAxis
3.Add DataPoints with value with 14 or more digits. 
4.Set FormatLabel = {0:C} or {0:F0} 
5.Run project and will see that labels overlaps vertical axis.

Workaround: 
Use custom format provider 
this.radChartView1.Axes[1].LabelFormatProvider = new MyFormatProvider();

To reproduce:
Add Series and Axes to a RadChartView and a ChartPanZoomController. Zoom and pan a little, then clear all the series and axes and add new ones. Try to pan now.

To reproduce:
Add a RadChartView and add some LineSeries and data points. Set the ShowTrackBall property to true. In some cases KeyNotFound exception occurs.

Workaround:
Use the following class:
public class MyController : ChartTrackballController
{
    protected override string GetTrackballText(List<DataPointInfo> points)
    {
        StringBuilder result = new StringBuilder("<html>");

        SortedDictionary<ChartSeries, List<DataPoint>> visiblePoints = new SortedDictionary<ChartSeries, List<DataPoint>>(new ChartSeriesComparer());

        foreach (DataPointInfo pointInfo in points)
        {
            if (visiblePoints.ContainsKey(pointInfo.Series))
            {
                visiblePoints[pointInfo.Series].Add(pointInfo.DataPoint);
            }
            else
            {
                visiblePoints.Add(pointInfo.Series, new List<DataPoint>() { pointInfo.DataPoint });
            }
        }

        int counter = 0;
        foreach (ChartSeries series in visiblePoints.Keys)
        {
            for (int i = 0; i < visiblePoints[series].Count; i++)
            {
                Color pointColor = this.GetColorForDataPoint(series, visiblePoints[series][i]);
                string color = string.Format("{0},{1},{2},{3}", pointColor.A, pointColor.R, pointColor.G, pointColor.B);
                result.AppendFormat("<color={0}>{1}", color, this.GetPointText(visiblePoints[series][i]));

                if (i < visiblePoints[series].Count)
                {
                    result.Append(" ");
                }
            }

            counter++;

            if (counter < visiblePoints.Keys.Count)
            {
                result.Append("\n");
            }
        }

        result.Append("</html>");

        return result.ToString();
    }

    class ChartSeriesComparer : IComparer<ChartSeries>
    {
        public ChartSeriesComparer()
        {
        }

        public int Compare(ChartSeries x, ChartSeries y)
        {
            if (!(x is IndicatorBase) && y is IndicatorBase)
            {
                return -1;
            }
            else if (x is IndicatorBase && !(y is IndicatorBase))
            {
                return 1;
            }

            return x.GetHashCode().CompareTo(y.GetHashCode());
        }
    }
}

Replace the old controller as follows:
for (int i = 0; i < this.radChartView1.Controllers.Count; i++)
{
    if (this.radChartView1.Controllers[i] is ChartTrackballController)
    {
        this.radChartView1.Controllers[i] = new MyController();
        break;
    }
}

Note that the controller must be replaced before any data is added to the chart

Use the code below and reduce the Form size to see the extra line:

  public Form1()
        {
            InitializeComponent();

            radChartView1.Parent = this;
            radChartView1.Dock = DockStyle.Fill;
            radChartView1.ShowLegend = true;

            radChartView1.ShowGrid = true;
            CartesianGrid grid = ((CartesianGrid)radChartView1.GetArea<CartesianArea>().Grid);
            grid.DrawVerticalFills = true;
            grid.AlternatingHorizontalColor = false;
            grid.AlternatingVerticalColor = false;
            grid.BackColor = Color.Red;
            grid.ForeColor = Color.Blue;
            grid.BorderDashStyle = System.Drawing.Drawing2D.DashStyle.Solid;

            DateTimeContinuousAxis horizontalAxis = new DateTimeContinuousAxis();
            horizontalAxis.MajorStepUnit = Telerik.Charting.TimeInterval.Day;
            horizontalAxis.MajorStep =2;
            horizontalAxis.LabelFormat = "{0:dd/MM/yyyy}";
            LinearAxis verticalAxis1 = new LinearAxis();
            verticalAxis1.AxisType = AxisType.Second;
            LinearAxis verticalAxis2 = new LinearAxis();
            verticalAxis2.AxisType = AxisType.Second;
            verticalAxis2.HorizontalLocation = AxisHorizontalLocation.Right;

            LineSeries line1 = new LineSeries();
            line1.HorizontalAxis = horizontalAxis;
            line1.VerticalAxis = verticalAxis1;

            LineSeries line2 = new LineSeries();
            line2.HorizontalAxis = horizontalAxis;
            line2.VerticalAxis = verticalAxis2;

            line1.DataPoints.Add(new CategoricalDataPoint(26d, DateTime.Now.AddDays(-6)));
            line1.DataPoints.Add(new CategoricalDataPoint(20d, DateTime.Now.AddDays(-5)));
            line1.DataPoints.Add(new CategoricalDataPoint(12d, DateTime.Now.AddDays(-4)));
            line1.DataPoints.Add(new CategoricalDataPoint(15d, DateTime.Now.AddDays(-2)));
            line1.DataPoints.Add(new CategoricalDataPoint(21d, DateTime.Now.AddDays(-1)));

            line2.DataPoints.Add(new CategoricalDataPoint(32d, DateTime.Now.AddDays(-6)));
            line2.DataPoints.Add(new CategoricalDataPoint(52d, DateTime.Now.AddDays(-4)));
            line2.DataPoints.Add(new CategoricalDataPoint(35d, DateTime.Now.AddDays(-3)));
            line2.DataPoints.Add(new CategoricalDataPoint(36d, DateTime.Now.AddDays(-2)));
            line2.DataPoints.Add(new CategoricalDataPoint(11d, DateTime.Now.AddDays(-1)));

            line1.LegendTitle = "line1";
            line2.LegendTitle = "line2";

            this.radChartView1.Series.Add(line1);
            this.radChartView1.Series.Add(line2);
        }

To reproduce:
this.chart.Controllers.Add(new ChartTrackballController());
this.chart.Dock = DockStyle.Fill;
this.chart.AreaType = ChartAreaType.Cartesian;
LineSeries lineSeries1 = new LineSeries();
lineSeries1.Name = "Line 1";

lineSeries1.DataPoints.Add(new CategoricalDataPoint(10, "1"));
lineSeries1.DataPoints.Add(new CategoricalDataPoint(4, "2"));
lineSeries1.DataPoints.Add(new CategoricalDataPoint(23, "3"));
lineSeries1.DataPoints.Add(new CategoricalDataPoint(11, "4"));
lineSeries1.DataPoints.Add(new CategoricalDataPoint(15, "5"));
lineSeries1.DataPoints.Add(new CategoricalDataPoint(10, "6"));
lineSeries1.DataPoints.Add(new CategoricalDataPoint(4, "7"));
lineSeries1.DataPoints.Add(new CategoricalDataPoint(7, "8"));
lineSeries1.DataPoints.Add(new CategoricalDataPoint(11, "9"));
lineSeries1.DataPoints.Add(new CategoricalDataPoint(15, "10"));
this.chart.Series.Add(lineSeries1);

LineSeries lineSeries2 = new LineSeries();
lineSeries2.Name = "Line 2";

lineSeries2.DataPoints.Add(new CategoricalDataPoint(6, "1"));
lineSeries2.DataPoints.Add(new CategoricalDataPoint(20, "2"));
lineSeries2.DataPoints.Add(new CategoricalDataPoint(7, "3"));
lineSeries2.DataPoints.Add(new CategoricalDataPoint(8, "4"));
lineSeries2.DataPoints.Add(new CategoricalDataPoint(4, "5"));
lineSeries2.DataPoints.Add(new CategoricalDataPoint(10, "6"));
lineSeries2.DataPoints.Add(new CategoricalDataPoint(24, "7"));
lineSeries2.DataPoints.Add(new CategoricalDataPoint(17, "8"));
lineSeries2.DataPoints.Add(new CategoricalDataPoint(18, "9"));
lineSeries2.DataPoints.Add(new CategoricalDataPoint(43, "10"));
this.chart.Series.Add(lineSeries2);
this.chart.ShowTrackBall = true;

For workaround, use this class:
public class MyTrackBallController : ChartTrackballController
{
    protected override string GetTrackballText(List<DataPointInfo> points)
    {
        StringBuilder result = new StringBuilder("<html>");

        SortedDictionary<Telerik.WinControls.UI.ChartSeries, List<DataPoint>> visiblePoints 
            = new SortedDictionary<Telerik.WinControls.UI.ChartSeries, List<DataPoint>>(new ChartSeriesComparer());
        
        foreach (DataPointInfo pointInfo in points)
        {
            if (visiblePoints.ContainsKey(pointInfo.Series))
            {
                visiblePoints[pointInfo.Series].Add(pointInfo.DataPoint);
            }
            else
            {
                visiblePoints.Add(pointInfo.Series, new List<DataPoint>() { pointInfo.DataPoint });
            }
        }
        
        int counter = 0;
        foreach (Telerik.WinControls.UI.ChartSeries series in visiblePoints.Keys)
        {
            for (int i = 0; i < visiblePoints[series].Count; i++)
            {
                Color pointColor = this.GetColorForDataPoint(series, visiblePoints[series][i]);
                string color = string.Format("{0},{1},{2},{3}", pointColor.A, pointColor.R, pointColor.G, pointColor.B);
                result.AppendFormat("<color={0}>{1}", color, this.GetPointText(visiblePoints[series][i]));
        
                if (i < visiblePoints[series].Count)
                {
                    result.Append(" ");
                }
            }
        
            counter++;
        
            if (counter < visiblePoints.Keys.Count)
            {
                result.Append("\n");
            }
        }
        
        result.Append("</html>");
        
        return result.ToString();
    }

    class ChartSeriesComparer : IComparer<Telerik.WinControls.UI.ChartSeries>
    {
        public int Compare(Telerik.WinControls.UI.ChartSeries x, Telerik.WinControls.UI.ChartSeries y)
        {
            if (!(x is IndicatorBase) && y is IndicatorBase)
            {
                return -1;
            }
            else if (x is IndicatorBase && !(y is IndicatorBase))
            {
                return 1;
            }

            if (x.Equals(y))
            {
                return 0;
            }

            return 1;
        }
    }

}

Add method to zoom by specified parameters

Steps to reproduce:

1. Clear all series and axes from a chart
2. Create new axes and series and databind the series
3. Add the new series and axes to the chart
4. Repeat the steps above multiple times

Add RightToLeft support in DrillDownNavigator.

To reproduce: 
AddChartView();
            radChartView1.ShowGrid = true;

            CartesianGrid grid = ((CartesianGrid)radChartView1.GetArea<CartesianArea>().Grid);
            grid.DrawVerticalFills = true;
            grid.AlternatingHorizontalColor = false;
            grid.AlternatingVerticalColor = false;
            grid.BackColor = Color.Red;
            grid.ForeColor = Color.Blue;
            grid.BorderDashStyle = System.Drawing.Drawing2D.DashStyle.Solid;

The Line Series cannot be clicked/selected and cannot be used in DrillDown scenarios.