ole Posted December 24, 2012 Report Share Posted December 24, 2012 This handler calls every time when user click on timeline chart and try to select items. But selection itself starting only on second click. private void chart_PreviewMouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e) { chart.Selection.StartMouseSelection(new MouseSelectionHandler(OnEndSelection), null); } Quote Link to comment Share on other sites More sharing options...
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