The chart item in Telerik Reporting uses the same engine as RadChart for ASP.NET AJAX, so the code in most of the online examples for RadChart for ASP.NET AJAX will be applicable for Telerik Reporting, you will just need to use the Telerik.Reporting.Charting namespace. Onto your questions:
- RadChart supports secondary Y axis - you can find an example here.
- I am afraid this is not supported.
- You can set the RadChart.PlotArea.YAxis.Appearance.ValueFormat property to one of the predefined values in ChartValueFormat.Currency enum or set the RadChart.PlotArea.YAxis.Appearance.CustomFormat property with any valid standard or custom numeric format string.
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