Quick guide to dispose objects in SharePoint

Ever wanted a quick reference on what to or not to dispose in SharePoint?

This is the my idea about such a guide.

How to dispose?

You can use the Dispose() method, or the Using keyword context

  

What to dispose?

to ease reading, in general: Dispose red, keep green!.

Dispose when you have: new, openWeb, allWebs,Webs

Do NOT dispose when you have: SPContext, RootWeb, ParentWeb

Also from latest version of SPDisposeCheck tool, this is a reference list of Do Not Dispose Rules checked:

SPListEventProperties.Web

SPWebEventProperties.Web

SPItemEventProperties.Web

SPItemEventProperties.ListItem.Web

SPItemEventProperties.Web.Site

SPItemEventProperties.ListItem.Web.Site

SPFeatureReceiverProperties.Feature.Parent

SPList.ParentWeb&SPListEventProperties.List.Web

SPWeb.ParentWeb

SPContext.Site&SPContext.Current.Site

SPContext.Web&SPContext.Current.Web

SPSite.RootWeb

SPControl.GetContextWeb(..)

SPControl.GetContextSite(..)

Microsoft.SharePoint.Administration.SPSiteAdministration.OpenWeb()

Microsoft.SharePoint.SPItemEventProperties.OpenWeb()

You can always check the latest version of SPDisposeCheck utility at: http://archive.msdn.microsoft.com/SPDisposeCheck