Steema Central

I am loading very large amounts of data (well over 5MB per array of data) to be displayed. I have a button that I use to clear the chart. When I monitor my App's memory usage it does not seem to be reclaiming all the memory when I clear the chart. Inside my ClearChart() function I call m_tchart.Series.Clear(); but this does not seem to help. I did some experimenting and found that the putting the following code in my ClearChart() function works and memory is reclaimed:
for(int i = 0; i < m_tchart.Series.Count; ++i)
{
m_tchart.Series.Clear();
}
m_tchart.Series.Clear();

I am using the Fastline Series, Visual Studio .Net 2003, with Version 1.1 SP1 of the .Net Framework.

Is this the way it should work?

Hi Digital,

Is this the way it should work?

Yes, that's right. Which was the problematic code?

m_tchart.Series.Clear(); alone is the problem. If I call only this line the memory does not seem to be reclaimed. I thought this method is supposed to clear and dispose of all series the then remove them from the chart. I does remove them from the chart but memory seems to hang around unless I manally loop through and clear each series one by one prior to the call to m_tchart.Series.Clear(); Only clearing the series one by one manually followed by the call to m_tchart.Series.Clear(); seems to allow the memory to be reclaimed.

Hi Digital,

Ok, then you can try RemoveAllSeries:

m_tchart.Series.RemoveAllSeries(); // This is not obsolete?

or is it that m_tchart.RemoveAllSeries(); is obsolete.

Hi Digital,

m_tchart.Series.RemoveAllSeries(); // This is not obsolete

No.

or is it that m_tchart.RemoveAllSeries(); is obsolete.

This doesn't exist in the .NET version contrary to the VCL version.

Thank you for your help.