How to enable site collection feature by default when deploying a visual webpart from visual studio?

Hi,

Please read the following URL. This is the way to activate and deactivate features programmatically.

Please let me know if you have any doubt.

http://social.msdn.microsoft.com/Forums/sharepoint/en-US/bd9a562e-eeb8-4fd3-a37d-3dc736ff6b56/programmatically-activating-and-deactivating-a-feature

Thanks,

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Soumya Das