Get SPWeb from Site or from SPContext

Question

Hi,
i am trying to get the SPWeb object,
i can get it using the Site:
Statically 
using (SPSite site = new SPSite("http://url/"))
               using (SPWeb web = site.OpenWeb("NameOfSubSite"))
but using this way i should enter the URL of site when get the SPSite and the name of subsite when get SPWeb using
site.OpenWeb
Dynamically
by use the SPContext: SPWeb web = SPContext.Current.Web;
here i can get the current web without enter the URL of site nor the name of subsite
the question is what is the best way to get the web of current site, and what is the difference between the 2 ways.
Thank you
Regards

Answer 1

hi,
One of the main differences is that in the SPContext case you don't own the SPSite object, so it can stop existing at any time (and thus you would get an SPException kindly letting you know that the object was already closed), whereas creating the instance
yourself makes you the owner and responsible for its disposal.
Sometimes, when you develop controls used locally as in a WebPart, using SPContext's SPSite is enough. However, there are many scenarios where this is not the case: when you need to target another SPSite rather than your own, or perhaps when you need
to develop an asynchronous process (say, within a SharePoint timer --SPJobDefinition--). Also, I recently read something about problems arising when using SPContext's SPSite object within a method called by SPSecurity.RunWithElevatedPrivileges.
Personally, as a rule of thumb, I use SPContext.Current.Site (or SPContext.Current.Web for that matter) when developing WebParts or Web Controls whose purpose is to read data from an SPList or something like that. Otherwise (as in the timers) I create my own
instance of SPSite.
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