How to specify TooltipModifier.TooltipTemplate

When I try this I get the following exception

In the SciChart WPF Documentation there is a page for how to bind tooltip templates in MVVM

A lot of customers ask us how to style various attached properties used in SciChart in the MVVM API. For example, the given following attached properties, how do we convert this to the MVVM API?

<Grid>
      <Grid.Resources>
          <Style TargetType="s:FastLineRenderableSeries" x:Key="PropertyStyles">
              <Setter Property="s:TooltipModifier.TooltipTemplate" Value="{StaticResource TooltipTemplate}"/>
              <Setter Property="s:TooltipModifier.IncludeSeries" Value="True"/>
              <Setter Property="s:SeriesValueModifier.IncludeSeries" Value="False"/>
          </Style>
      </Grid.Resources>
      <s:SciChartSurface s:RenderableSeries="{Binding Series}">            
          <s:SciChartSurface.XAxis>
              <s:NumericAxis/>
          </s:SciChartSurface.XAxis>
          <s:SciChartSurface.YAxis>
              <s:NumericAxis/>
          </s:SciChartSurface.YAxis>
          <s:SciChartSurface.ChartModifier>
              <s:ModifierGroup>
                  <s:TooltipModifier/>
                  <s:SeriesSelectionModifier/>
              </s:ModifierGroup>
          </s:SciChartSurface.ChartModifier>
      </s:SciChartSurface>
  </Grid>
  

The solution is simple, to use our method of Styling the RenderableSeries presented in Worked Example – Style a Series in MVVM.

Simply declare the attached properties and tooltip templates in a style in your View.

public class MainViewModel : BindableObject
  {
          public MainViewModel()
          {
              Series = new ObservableCollection<IRenderableSeriesViewModel>();
              Series.Add(new LineRenderableSeriesViewModel()
              {
                  Stroke = Colors.Red,
                  DataSeries = ... // todo 
                  StyleKey = "PropertyStyles"
              });
          }
          public ObservableCollection<IRenderableSeriesViewModel> Series { get; private set; }
      }
  

Best regards,
Andrew