Timeline control

I need a 开发者_如何学Ccontrol something like this:

http://img404.imageshack.us/img404/1411/timeline.jpg

It is used for time selection.

I can add several horizontal time lines. I can add/edit/delete time intervals on every time line (programmatically). I can change time scale etc...

I think you guess general meaning ...

It must be free.

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I use timeline from simile-widgets (JavaScript + XML).

Live demo from my site.

Update. C# / Silverlight Timeline controls on codeplex.