Note that RadChartView uses by default a single color for rendering a LineSeries. However, it provides a public API, CartesianRenderer, by which you can plug into the rendering logic and achieve any customizations that you need. Please refer to the following help article how you can achieve a colorful line drawing. Note that this is just a sample approach and it may not cover all possible cases. Feel free to modify and extend it in a way which suits your requirements best: https://docs.telerik.com/devtools/winforms/controls/chartview/customization/custom-rendering
I hope this information helps. If you need any further assistance please don't hesitate to contact me.
Dess | Tech Support Engineer, Sr.
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Feedback Portal
and vote to affect the priority of the items