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I'm in the process of taking older code that referenced Dundas Chart and converting it to MS' chart controls (System.Web.UI.DataVisualization.Charting). Most of it was pretty straightforward, but it seems that the Callback Manager is no longer supported, which supported async/ajax calls.

The only article I can find about using charting with async calls is http://www.4guysfromrolla.com/articles/121609-1.aspx, but their solution is just to use an update panel. Is this really the best way to accomplish this?