How to render the stacked step line series in WPF Chart?
This guide provides step-by-step instructions on rendering stacked step line series using Syncfusion® WPF Chart.
Steps to Render Stacked Step Line Series
Step 1: Create a Custom Class
Create a custom class, StackedStepLineSeries, by inheriting from StepLineSeries.
C#:
public class StackedStepLineSeries : StepLineSeries
{
}
Step 2: Override the OnDataSourceChanged Method
Override the OnDataSourceChanged method in the StackedStepLineSeries class to stack data from the provided ItemsSource as shown below:
C#:
public class StackedStepLineSeries : StepLineSeries
{
public ObservableCollection<Model> Data { get; set; }
public StackedStepLineSeries()
{
Data = new ObservableCollection<Model>();
}
protected override void OnDataSourceChanged(IEnumerable oldValue, IEnumerable newValue)
{
int index = Area.Series.IndexOf(this);
if (index > 0 && ItemsSource != Data)
UpdateDataSource(index);
else
base.OnDataSourceChanged(oldValue, newValue);
}
private void UpdateDataSource(int seriesIndex)
{
Data.Clear();
var previousSeriesData = Area.Series[seriesIndex - 1].ItemsSource as ObservableCollection<Model>;
var currentData = ItemsSource as ObservableCollection<Model>;
for (int i = 0; i < previousSeriesData.Count; i++)
{
Data.Add(new Model() { XData = currentData[i].XData, YData = previousSeriesData[i].YData + currentData[i].YData });
}
ItemsSource = Data;
}
}
Step 3: Create Instances for the Custom Class
Create an instance for custom StackedStepLineSeries class as demonstrated in the following code snippet.
XAML:
<local:StackedStepLineSeries XBindingPath="XData"
YBindingPath="YData" ItemsSource="{Binding Data}"/> <local:StackedStepLineSeries XBindingPath="XData"
YBindingPath="YData" ItemsSource="{Binding Data}"/> <local:StackedStepLineSeries XBindingPath="XData"
YBindingPath="YData" ItemsSource="{Binding Data}"/>
Output:
Rendering Stacked Step Area Series
You can similarly render StackedStepAreaSeries by inheriting from StepAreaSeries. Additionally, set the Canvas.ZIndex and Interior properties as demonstrated:
XAML:
<local:StackedStepAreaSeries Canvas.ZIndex="3"
Interior="Red"
XBindingPath="XData"
YBindingPath="YData"
ItemsSource="{Binding Data}"/> <local:StackedStepAreaSeries Canvas.ZIndex="2"
Interior="Green"
XBindingPath="XData"
YBindingPath="YData"
ItemsSource="{Binding Data}"/> <local:StackedStepAreaSeries Canvas.ZIndex="1"
Interior="Blue"
XBindingPath="XData"
YBindingPath="YData"
ItemsSource="{Binding Data}"/>
C#:
public class StackedStepAreaSeries : StepAreaSeries
{
}
Output:
Conclusion
I hope you enjoyed learning how to render the stacked step line series in WPF Chart.
You can refer to our WPF Chart feature tour page know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our WPF Chart Examples to understand how to create and manipulate data.
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