void NewData(int nser)
{
chart.BeginUpdate();
chart.Data.Children.Clear();
int npts = 10;
for (int i = 0; i < nser; i++)
{
chart.Data.Children.Add(SampleData.CreateSeries("series " + i, npts));
}
chart.EndUpdate();
lbls.BeginUpdate();
lbls.Children.Clear();
for (int i = 0; i < nser; i++)
{
for (int j = 0; j < npts; j++)
{
var lbl = new ChartLabel()
{
Foreground = Brushes.Red,
Content = "ser " + i,
SeriesIndex = i,
PointIndex = j
};
lbls.Children.Add(lbl);
}
}
lbls.EndUpdate();
}
void lbls2_LayoutUpdated(object sender, EventArgs e)
{
// optimized updating
var list = new List <Rect>();
foreach (var lbl in lbls2.Children)
{
var ilbl = (ILabel)lbl;
list.Add(new Rect(ilbl.Position, ilbl.Size));
}
int cnt = list.Count;
if (cnt == lbls.OccupiedRects.Count)
{
bool changed = false;
for (int i = 0; i < cnt; i++)
{
if (list[i] != lbls.OccupiedRects[i])
{
changed = true;
break;
}
}
if (!changed)
{
return;
}
}
// update occupied rectangles
lbls.BeginUpdate();
lbls.OccupiedRects.Clear();
for (int i = 0; i < cnt; i++)
{
lbls.OccupiedRects.Add(list[i]);
}
lbls.EndUpdate();
}
void NewData(int cnt = 0)
{
if (cnt == 0)
{
cnt = rnd.Next(40, 80);
}
chart.Data.Children.Clear();
var values = new double[cnt];
for (int i = 0; i < cnt; i++)
{
values[i] = rnd.Next(1, 100);
}
chart.Data.Children.Add(new DataSeries()
{
ValuesSource = values
});
lbls.BeginUpdate();
lbls.Children.Clear();
for (int i = 0; i < cnt; i++)
{
lbls.Children.Add(new ChartLabel()
{
SeriesIndex = 0,
PointIndex = i,
Content = "lbl" + i,
//Padding = new Thickness(1),
BorderThickness = new Thickness(0.5),
BorderBrush = Brushes.LightGray,
Offset = new Point()
});
}
lbls.EndUpdate();
}
