Generate Image with Microsoft .NET Chart Controls Library without Control

.net, c#, charts

Solution

Yes, that's possible:

using System.Windows.Forms.DataVisualization.Charting;
using System.IO;
...
    public void GeneratePlot(IList<DataPoint> series, Stream outputStream) {
      using (var ch = new Chart()) {
        ch.ChartAreas.Add(new ChartArea());
        var s = new Series();
        foreach (var pnt in series) s.Points.Add(pnt);
        ch.Series.Add(s);
        ch.SaveImage(outputStream, ChartImageFormat.Jpeg);
      }
    }

Problem

Is it possible to generate images (jpeg, png, etc) using the Microsoft Chart Controls library without instantiating a WinForm or ASP.NET Control class? All the examples I have seen utilize a control component. I need to create a library which contains simple methods that take data to be plotted and returns a new chart image. Examples: ``` public byte[] GeneratePlot(IList<SeriesData> series) { // generate and return JPEG } public void GeneratePlot(IList<SeriesData> series, Stream outputStream) { // generate JPEG and write to stream } ``` If it is not possible: - would you recommend creating/disposing a new chart control each time the user calls the GeneratePlot() method? - is there another .NET library (preferably free) that you would recommend? Thanks

Original source