Delete the descendants of an item

You can use the Sitecore.Data.Items.Item.DeleteChildren() method to delete the descendants of an item. For example, to delete the descendants of the /Sitecore/Content/Home item in the Master database:

Sitecore.Data.Database master = Sitecore.Configuration.Factory.GetDatabase("master");

Sitecore.Data.Items.Item sample = master.GetItem("/sitecore/content/home/sample");

sample.DeleteChildren();