I'm currently using a similar structure to the 50 EEG example. Part of my design is to add and delete 10-50 function plots on the fly, so it is important that I managed my memory effectively. When I run the memory profiler in VS2015, I find that everytime I try to a function plot from the collection, SciChart.Charting.Visuals.Axes.LabelProviders.NumericTickLabel still lingers in memory. What would be the proper way to dispose NumericTickLabel or remove a scichartsurface?
XAML.CS
<ResourceDictionary>
<DataTemplate x:Key="FunctionItemTemplate">
<Grid>
<s:SciChartSurface Name=FunctionSurface
RenderableSeries="{Binding RenderableSeriesCollections}"/>
</Grid>
</ResourceDictionary>
<ListView Name="FunctionPlots
ItemTemplate="{StaticResource FunctionItemTemplate}"
ItemsSource="{Binding FunctionsCollection}" />
MainWindowViewModel.cs
public class MainWindowViewModel : INotifyProperty
{
private ObservableCollection<FunctionPlotViewModel> _functionsCollection;
public MainWindowViewModel()
{
FunctionsCollection = new ObservableCollection<FunctionPlotViewModel>();
}
public ObservableCollection<FunctionPlotViewModel> FunctionsCollection
{
get { return _functionsCollection;}
set
{
_functionsCollection = value;
OnPropertyChanged("FunctionsCollection");
}
}
public void RemoveLastFunctionPlot()
{
int lastIndex = FunctionCollections.Count - 1;
FunctionCollections.Remove(lastIndex);
//Doesn't Collect
GC.Collect();
GC.WaitForPendingFinalizer();
GC.Collect();
}
public event PropertyChangedEventHanlder PropertyChanged;
protected void OnPropertyChanged(string name)
{
PropertyChangedEventHanlder handler = PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(name));
}
}
}
FunctionPlotViewModel.cs
public class FunctionPlotViewModel: INotifyProperty
{
private ObservableCollection<IRenderableSeries> _renderableSeriesCollections;
public FunctionPlotViewModel()
{
RenderableSeriesCollection = new ObservableCollection<IRenderableSeries>();
}
public ObservableCollection<IRenderableSeries> RenderableSeriesCollections
{
get { return _renderableSeriesCollections;}
set
{
_renderableSeriesCollections= value;
OnPropertyChanged("RenderableSeriesCollections");
}
}
public void SetUpCustomAxis(double TimeOfDayInitial, IAxis AxisToBindTo)
{
var defaultSurface = RenderableSeriesCollections.FirstOrDefault().DataSeries.ParentSurface();
if(defaultSurface == null)
{
return;
}
var newAxis = new NumericAxis();
var customNumericLabel = new CustomNumericLabelProvider();
defaultSurface.XAxis = newAxis;
Binding visibleRangeBinding = new Binding("VisibleRange");
visibleRangeBinding.Source = AxisToBindTo;
visibleRangeBinding.Mode = BindingMode.TwoWay;
((NumericAxis)defaultSurface.XAxis).SetBinding(NumericAxis.VisibleRangeProperty, visibleRangeBinding);
}
public void CleanUp()
{
var defaultSurface = RenderableSeriesCollections.FirstOrDefault().DataSeries.ParentSurface();
if(defaultSurface == null)
{
return;
}
foreach(var renderSeries in RenderableSeriesCollections)
{
renderSeries.DataSeries.Clear();
}
RenderableSeriesCollections.Clear();
var token = defaultSurface.SuspendUpdates();
token.Dispose();
//More things to do??
}
public event PropertyChangedEventHanlder PropertyChanged;
protected void OnPropertyChanged(string name)
{
PropertyChangedEventHanlder handler = PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(name));
}
}
}
CustomNumericLabelProvider.cs
public class CustomNumericLabelProvider : NumericProvider
{
public override void OnBeginAxisDraw()
{
}
public override string FormatLabel(IComparable dataValue)
{
if (dataValue == null)
return String.Emtpy;
return ConvertToTimeOfDay(dataValue);
}
public string ConvertToTimeOfDay(IComparable value)
{
//commented out for brevity
return value;
}
public override string FormatCursorLabel(IComparable dataValue)
{
//commented out for brevity
return dataValue;
}
}
