Class FastLineSeries

Represents a special kind of line series which uses poly lines for rendering chart points. FastLineSeries allows to render a collection with large number of data points.

Inheritance
System.Object
ChartSeriesBase
ChartSeries
DataMarkerSeries
CartesianSeries
XyDataSeries
FastLineSeries
Inherited Members
Namespace: Syncfusion.UI.Xaml.Charts
Assembly: Syncfusion.Chart.WinUI.dll
Syntax
public class FastLineSeries : XyDataSeries, ISupportAxes2D, ISupportAxes
Remarks

FastLineSeries renders large quantity of data in fraction of milliseconds using poly lines. FastLineBitmapSeries also can be used for better performance which uses WriteableBitmap to render the series.

Examples
    <chart:SfChart>

          <chart:SfChart.PrimaryAxis>
              <chart:NumericalAxis/>
          </chart:SfChart.PrimaryAxis>

          <chart:SfChart.SecondaryAxis>
              <chart:NumericalAxis/>
          </chart:SfChart.SecondaryAxis>

          <chart:FastLineSeries
              ItemsSource="{Binding Data}"
              XBindingPath="XValue"
              YBindingPath="YValue"/>

    </chart:SfChart>

Constructors

FastLineSeries()

Declaration
public FastLineSeries()

Fields

CustomTemplateProperty

Identifies the CustomTemplate dependency property.

Declaration
public static readonly DependencyProperty CustomTemplateProperty
Field Value
Type Description
Microsoft.UI.Xaml.DependencyProperty

The identifier for CustomTemplate dependency property.

Properties

CustomTemplate

Gets or sets the DataTemplate used to customize the poly line appearence.

Declaration
public DataTemplate CustomTemplate { get; set; }
Property Value
Type Description
Microsoft.UI.Xaml.DataTemplate

The template that specifies poly line inside canvas. The default is null.
Remarks

This data template should be loaded with poly line inside canvas where poly line appearence properties like stroke dasharray, stroke dashoffset, stroke dashcap, stroke linejoin can be customized.

Examples
    <chart:SfChart>
          <chart:SfChart.Resources>
            <DataTemplate x:Key="seriesTemplate">
                <Canvas>
                    <Polyline Points="{Binding Points}" StrokeDashArray="3,3" StrokeThickness="3" Stroke="Yellow"/>
                </Canvas>
            </DataTemplate>
          </chart:SfChart.Resources>

          <chart:SfChart.PrimaryAxis>
              <chart:NumericalAxis/>
          </chart:SfChart.PrimaryAxis>

          <chart:SfChart.SecondaryAxis>
              <chart:NumericalAxis/>
          </chart:SfChart.SecondaryAxis>

          <chart:FastLineSeries
              CustomTemplate="{StaticResource seriesTemplate}"
              ItemsSource="{Binding Data}"
              XBindingPath="XValue"
              YBindingPath="YValue"/>

    </chart:SfChart>

Methods

CreateSegment()

Creates an instance of series segment.

Declaration
protected override ChartSegment CreateSegment()
Returns
Type Description
ChartSegment

Returns the instance of corresponding series segment.
Overrides
Remarks

This customization is not supported for fast type series and technical indicators.

Examples

This sample shows how to call the CreateSegment() method to customize the line series segments.

public class LineSeriesExt : LineSeries
{​ 
    protected override ChartSegment CreateSegment()
    {​
        return new LineSegmentExt();
    }​
}​

public class LineSegmentExt : LineSegment
{​
    public override UIElement CreateVisual(Size size)
    {​
        // Write your customization code here.
    }​

    public override void Update(IChartTransformer transformer)
    {​
        // Write your customization code here.
    }​
}

CreateSegments()

Used to create the segment of FastLineSeries.

Declaration
public override void CreateSegments()
Overrides

OnDataSourceChanged(IEnumerable, IEnumerable)

Called when ItemsSource property changed.

Declaration
protected override void OnDataSourceChanged(IEnumerable oldValue, IEnumerable newValue)
Parameters
Type Name Description
System.Collections.IEnumerable oldValue

ItemsSource old value.
System.Collections.IEnumerable newValue

ItemsSource new value
Overrides
See Also

OnTapped(TappedRoutedEventArgs)

Used to update the series tooltip when tapping on the series segments.

Declaration
protected override void OnTapped(TappedRoutedEventArgs e)
Parameters
Type Name Description
Microsoft.UI.Xaml.Input.TappedRoutedEventArgs e

Microsoft.UI.Xaml.Input.TappedRoutedEventArgs that contains the event data.
Overrides

OnVisibleRangeChanged(VisibleRangeChangedEventArgs)

Invoked when VisibleRange property changed.

Declaration
protected override void OnVisibleRangeChanged(VisibleRangeChangedEventArgs e)
Parameters
Type Name Description
VisibleRangeChangedEventArgs e

VisibleRangeChangedEventArgs that contains the event data.
Overrides

Implements

See Also