XYGraph is a native .NET charting component showing data in a cartesian graph (X,Y). Controls from componentXtra gives royalty free software integration. Both free and purchased products includes sample code (VB and C#).   Code: ASP.NET v1.1 & C#

Nevron Chart for .NET is a professional charting component for WinForms and ASP.NET. It features numerous business, scientific and financial charting types, VS design time support, AJAX support, empty data points, built-in toolbar, flexible axes, and more   Code: ASP.NET v3.0 & C#

Flash Charts Pro allows you to add dynamic, data-driven and animated Flash charts & graphs to your ASP/ASP.NET applications. Compact, visually-arresting 2D/3D charts. You’ll have full control over styles and output of 30+ charts from your app and DB.   Code: ASP.NET v2.0 & VB

A professional chart and graph component for ASP.NET and Windows Forms applications. Layering architecture allows you to synthesize your desired chart using standard layers. Support all major chart types, including meters and guages. AJAX enabled.   Code: ASP.NET v1.0

Create top quality plots with a minimum of effort. NPlot automatically determines how it thinks your data should be displayed. If you don't like the defaults, you are free to specify any of the plotting parameters yourself. This library is completely free   Code: ASP.NET v1.0 & C#