WPF application using Oxyplot. Save the chart in file with any extension

Question

Сan you help me? I created a WPF-application using oxyplot libraries. It's receive some value and builds plot (chart) on them. It's all creates in xaml. There is a code:

`<oxy:Plot x:Name="PlotValues" Margin="10">
  <oxy:Plot.Axes>
    <oxy:DateTimeAxis StringFormat="HH:mm:ss" Title="Время"     Position="Bottom"/>
    <oxy:LinearAxis Name="LinearAxis" Title="Значение" Position="Left"/>
  </oxy:Plot.Axes>
  <oxy:Plot.Series>
    <oxy:LineSeries ItemsSource="{Binding CollectionOfDataPoint}"/>
  </oxy:Plot.Series>
</oxy:Plot>`

Is there any way to save this chart in any extension (desirable *.pdf, but it's not matter)?