Delete Site Features

I deleted all my Site Features with an c# program.

SPFarm.Local.Solution.开发者_开发百科Remove(Solution name);

Unfortunately the features still appear in my Web Site > Site Settings > Site Features

Have anybody a approach to delete the Features in my Web Site?

If I look at \Microsoft Shared\web server extensions\12\Template\Features all my Features appear, but they do not appear in the Central Administration > Operations > Solution Management.

I am using WSS 3.0

Thank you for any help.

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Delete farm features: SPFarm.Local.FeatureDefinitions.Remove(Guid);

Delete site features: SPContext.Current.Site.FeatureDefinitions.Remove(Guid);