I want to use a custom chart in SharePoint which picks up data from a list? I have not worked with SharePoint charts can anyone give me an example of a working chart? And also if there are many methods to do it then please tell me which is the best method. I'm mostly looking for a visual webpart.

And also i want to know more about how to use webpartpage chartviewwebpart?

<WebPartPages:ChartViewWebPart ID="ChartViewWebPart1" runat="server"></WebPartPages:ChartViewWebPart>