Hi again,

I tried something out and now I guess, it is because of the interval-settings. I don't know exactly what setting it is but the chart has simply not enough space to draw all of the days on x-axis and stops at the 16th day. A better behaviour would be, if it tried to draw all days of the series and changed the interval on the axis but now I'll do this manually. Probably this is the solution.

Alex

The chart shouldn't normally have any trouble displaying a large amount of data. Perhaps something is preventing it from doing so. Here's a few things you can check:

if you have more than one series, make sure that each series has an equal amount of points. Otherwise, you have to use a composite chart.

Make sure that you're not setting a range on the X axis. Check chart.Axis.X.RangeMin/RangeMax/RangeType properties

As a sanity check try this code and see if it works:

DataTable dt = new DataTable();
dt.Columns.Add("date", typeof(DateTime));
dt.Columns.Add("value", typeof(double));
dt.Columns.Add("label", typeof(string));

for (int i = 0; i < 50; i++)
{
   dt.Rows.Add(DateTime.Now.AddDays(i), i, "label " + i);
}

NumericTimeSeries series = new NumericTimeSeries();
series.Data.DataSource = dt;
series.Data.TimeValueColumn = "date";
series.Data.LabelColumn = "label";
series.Data.ValueColumn = "value";
series.DataBind();

ultraChart1.ChartType = ChartType.LineChart;
ultraChart1.LineChart.TreatDateTimeAsString = false;
ultraChart1.Series.Add(series);