TimeDataPlot is a free and easy to use opensource asp.net control for plotting data against time.
The control is free for use and modification. When you release a modified version it would be nice if you mention the original. The download contains the source for an example like the one below.
Syntax Example
<%@ Register TagPrefix="Stickler" TagName="TimeDataPlot" Src="TimeDataPlot.ascx" %>
[...]
ExamplePlot.PlotTitle = "Random Plot Example";
ExamplePlot.ImageAlt = "Random Plot Example";
ExamplePlot.DataSource = myDataView;
ExamplePlot.TimeColumnName = "time";
ExamplePlot.ValueColumnName = "value";
ExamplePlot.PlotPaddingLeft = 60;
ExamplePlot.ImageWidth = 450;
ExamplePlot.ImageHeight = 250;
ExamplePlot.DataBind();
[...]
<Stickler:TimeDataPlot id="ExamplePlot" runat="server" />
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