Getting error “Attempted to use an object that has ceased to exist.” when adding web part

Question

I have created a web part in visual studio, it deploys fine, but when I try to add it to a page I get the following error:

Attempted to use an object that has ceased to exist. (Exception from HRESULT: 0x80030102 (STG_E_REVERTED))

I read that this could happen due to disposing of objects too soon, so I changed

using (SPSite site = SPContext.Current.Site)

to this

using (SPSite site = new SPSite(SPContext.Current.Site.Url))

but it didn't fix anything. Does anyone have any idea why this would happen?

UPDATE:

I'm not using SPWeb but I use the SPSite object here:

using (FullTextSqlQuery fullTextSqlQuery = new FullTextSqlQuery(site))

Answer 1

After correcting your code, please make sure that your web part is the only one on the page. It may be that other custom web parts are using the uncorrected code and thus disposing of the SPSite object before your web part can access it.

Answer 2

Your first code snippet would produce exactly the error message you saw, the second should fix it.

Try an IISReset, just to be absolutely sure your latest code is being loaded?

Answer 3

You should use SPContext.Current.Site to access the current site. Do not create any new SPSite object can be taxing on resources, you can use the current site from the SPContext.