Measurement Studio for .NET 8.0.1 cannot release graphic objects automatic, why?

[Guangtao]

I found a big problem that GC cannot collect the graphic object whick not use any more. I think the follow methods cannot release object automatic.            

            WaveformGraph.Plots.Clear();

            WaveformGraph.Annotations.Clear();

            WaveformGraph.Cursors.Clear();

            WaveformGraph.XAxes.Clear();

            WaveformGraph.YAxes.Clear();

Is there has a way to release the graohic object?

[Guangtao]

I use CLR Profiler & Peformace tools checked it. I found there're many System.Double[] type data (deallocated by large object heap collection) can't be collected by GC. There is just one instance of WaveformPlot, so it seemed I can do nothing.