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Creating a dashed CustomLine on a chart

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This is a migrated thread and some comments may be shown as answers.
Rob
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Rob asked on 14 Nov 2013, 10:10 AM
Hi,

I'm trying to draw a CustomLine on a add, I want it styled so it appears dashed.

I am creating the line in code here....
CustomLine line = new CustomLine();
line.Style = (Style)Application.Current.FindResource("DashedCustomLine");
line.Stroke = Brushes.Black;
line.StrokeThickness = 1;
line.YIntercept = 0;
line.Slope = 1;

The style is then....
<Style x:Key="DashedCustomLine" TargetType="telerikCharting:CustomLine">
    <Setter Property="StrokeDashArray" Value="5,2" />
</Style>

However it seems there isn't a StrokeDashArray property on CustomLine, what property should I be using, or how should I be achieving this.

I only wish to draw a simple line of identity on the chart, ie. x = y.

Thanks

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Rob
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answered on 18 Nov 2013, 10:06 AM
Anyone?
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Evgenia
Telerik team
answered on 19 Nov 2013, 03:16 PM
Hello Craig,

Indeed there is no DashArray property for Custom Line annotations. What I can suggest is that you create a dummy (fake) line series with custom style like this:
public partial class MainPage : UserControl
 
{
 
    public MainPage()
 
    {
 
        InitializeComponent();
 
  
 
        List<ChartData> data = new List<ChartData>();
 
        data.Add(new ChartData() { YValue = 1 });
 
        data.Add(new ChartData() { YValue = 2 });
 
  
 
        Style pathStyle1 = new Style(typeof(Path));
 
        pathStyle1.Setters.Add(new Setter(Shape.StrokeDashArrayProperty, "1"));
 
        pathStyle1.Setters.Add(new Setter(Shape.StrokeProperty, new SolidColorBrush(Colors.Cyan)));
 
        pathStyle1.Setters.Add(new Setter(Shape.StrokeThicknessProperty, 3));
 
  
 
        Style lineStyle1 = new Style(typeof(Telerik.Windows.Controls.Charting.SelfDrawingSeries));
 
        lineStyle1.Setters.Add(new Setter(SelfDrawingSeries.BorderLineStyleProperty, pathStyle1));
 
  
 
        SeriesMapping seriesMapping = new SeriesMapping { LegendLabel = "TEST" };
 
        seriesMapping.ItemMappings.Add(new ItemMapping("YValue", DataPointMember.YValue));
 
        seriesMapping.SeriesDefinition = new LineSeriesDefinition() { SeriesStyle = lineStyle1, ShowItemLabels = false, ShowPointMarks = false };
 
  
 
        RadChart1.SeriesMappings.Add(seriesMapping);
 
        RadChart1.ItemsSource = data;
 
    }
 
}
 
  
 
public class ChartData
 
{
 
    public double YValue
 
    {
 
        get;
 
        set;
 
    }
 
}

Here's the lineStyle1 applied above:
<Style x:Name="lineStyle1" TargetType="telerikCharting:SelfDrawingSeries">
                <Setter Property="BorderLineStyle">
                    <Setter.Value>
                        <Style TargetType="Path">
                            <Setter Property="StrokeDashArray" Value="1"/>
                            <Setter Property="Stroke" Value="Black" />
                            <Setter Property="StrokeThickness" Value="3" />
                        </Style>
                    </Setter.Value>
                </Setter>
            </Style>

Regards,
Evgenia
Telerik
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Rob
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Answers by
Rob
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Evgenia
Telerik team
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