在WPF中，如何将绑定从TextBlock复制到自定义集合？

Problem: I have a ListBox with TextBlocks whos Text property are bound to different properties. I wish to drag the TextBlock onto a OxyPlot and have the plot create a new LineSeries with a collection that should be bound to the same binding as for the TextBlock (is this making sense?)Problem: I have a ListBox with TextBlocks whos