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Created February 16, 2016 18:46
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Ultra fast real-time data display in ObjectListView
// Refresh the data in timer or in live data update callback
this.timer.Tick += (s, e) => {
// draw the live value
using (Graphics g = this.dataListView1.CreateGraphics())
// shrink the drawing area so that the grid line and selection color can be seen.
Rectangle r = lvi.GetSubItem(4).Bounds;
r.Inflate(-2, -2);
// use double buffer to avoid flicker
using (BufferedGraphics bg = BufferedGraphicsManager.Current.Allocate(g, r))
// clear the last graphics and draw
bg.Graphics.Clip = new Region(r);
((TextDecoration)(lvi.GetSubItem(4).Decoration)).Text = "Live Data";
((TextDecoration)(lvi.GetSubItem(4).Decoration)).DrawText(bg.Graphics, r);
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