[Solved] Overview plus detail chart with slider - Very slow

[Sebastián Rosales]

Hi, i'm evaluating Telerik control for Silverlight. I implemented an overview plus detail chart using the RadSlider control to select an area of the overview chart, and then show a zoomed chart of that selected area. So there are two charts (the zoom chart is called zoomChart and the overview one is called chart) and a radSlider control over the overview chart.

Both charts are using a common DataSeries populated with 365 values. chart range is 1-365 and zoomChart range varies depending on radSlider values.
I added handlers for SelectionStartChanged and SelectionEndChanged of the RadSlider, to change the zoomChart range.

Here is the code for the handlers:

private void slider_SelectionStartChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
{
    _min = slider.SelectionStart;

    chartZoom.DefaultView.ChartArea.AxisX.AddRange(_min, _max, 1);
}

private void slider_SelectionEndChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
{
    _max = slider.SelectionEnd;

   chartZoom.DefaultView.ChartArea.AxisX.AddRange(_min, _max, 1);
}

where _min and _max are the actual minimum and maximum values of the zoomChart range.

The problem is that when i change radSlider values, both radSlider and zoomChart update very slow. ¿How can i improve performance?

Thanks in advance.

[Velin]

Hello Sebastián Rosales,

Could you please prepare and send us a small project where this issue can be observed? Thanks.

Greetings,
Velin
the Telerik team

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