private void UpdateChart(object chart, Dictionary <string, DataContainer> dict)
{
Chart chart_ = (Chart)chart;
// get all keys from the current connection
var keys = dict.Keys.ToArray();
// clear and update the graphs (for each key)
foreach (string key in keys)
{
// if series does not exist, add it
if (chart_.Series.IndexOf(key) == -1)
{
Charting.AddChartSeries(this, key, chart_);
}
int i = dict[key].time.Length - 1;
if (dict[key].time[i] != null)
{
DateTime time = DateTime.ParseExact(dict[key].time[i], Constants.FMT, CultureInfo.InvariantCulture, DateTimeStyles.AssumeLocal);
chart_.Series[key].Points.AddXY(time.ToOADate(), Convert.ToDouble(dict[key].value[i]));
}
// remove old data points
if (chart_.Series[key].Points.Count > Constants.n_datapoints_max)
{
chart_.Series[key].Points.RemoveAt(0);
}
}
}