I am trying to create an ultradatachart that should show 8 or 9 lines from a datatable.
The x axis should show the date column "dtg" and the Y values should come from the "tagvalues" column.
here is my code so far:
using (MySqlDataAdapter da = new MySqlDataAdapter(sql, con)) { da.Fill(dt); var data = dt.AsEnumerable() // convert the data to Enumerable so you can use linq over it .Select(r => new { dtg = r["DTG"], tagname = r["TagName"], tagvalue = r["TagValue"] }) // convert data to list of anonimous objects .GroupBy(d => d.tagname, (key, value) => new { key = key, value = value.ToList() }) // group the data by line names .ToArray(); ////////////////////// /// ultraDataChart1.Series.Clear(); ultraDataChart1.Axes.Clear(); ultraDataChart1.IsHorizontalZoomEnabled = true; ultraDataChart1.IsVerticalZoomEnabled = true; var xAxis = new CategoryDateTimeXAxis { Label = "Label", DataSource = dt, DataMember="dtg" }; var yAxis = new NumericYAxis(); ultraDataChart1.Axes.Add(xAxis); ultraDataChart1.Axes.Add(yAxis); foreach (var x in data) { AreaSeries useries = new AreaSeries(); useries.XAxis = xAxis; useries.YAxis = yAxis; useries.ValueMemberPath = "tagvalue"; useries.DataSource = x.value;//.Select(a => a.tagvalue).ToArray(); ultraDataChart1.Series.Add(useries); }
I cant get it to show the data.
Any help would be greatly appreciated.