Will using a SPListItemCollection returned from a function reopen the SPWeb

disposesharepointsharepoint-api

After reading Stefan Gossner's post about disposing objects and this question about Cross method dispose patterns, I found that I was guilty of accidentally reopening some SPWebs. I know in Stefan Gossner's post he mentions you should dispose of an SPWeb after you are finished with any child object. However, the microsoft documentation mentions Caching the SPListItemCollection object. Is the following code correct? Would the returned SPListItemCollection reopen an SPWeb object? Is there any way to tell for sure?

// is this correct????
private SPListItemCollection GetListItems()
{
    SPListItemCollection items = null;
    try
    {
        using (SPSite site = new SPSite(GetListSiteUrl()))
        {
            using (SPWeb web = site.OpenWeb())
            {
                // retrieve the list
                SPList list = web.Lists[_ListName];

                // more code to create the query...
                items = list.GetItems(query);
            }
        }
    }
    catch (Exception e)
    {
        // log error
    }
    return items;
}

Edit 09/09/09

I am mainly referring to this part of Stefan Grossner's post:

You should dispose a SPWeb or SPSite
object after the last access to a
child object of this object.

I believe what he is saying is that if I use the SPListItemCollection after I dispose of the SPWeb that I used to get it… the SPWeb will be reopened automatically.

Best Solution

I found out after asking Stefan directly that the SPListItemCollection can indeed reopen the SPWeb after you dispose of it. This means that my code posted above is INCORRECT and I would only be able to dispose of the SPWeb after I use the SPListItemCollection.

Update: It is better to convert to the SPListItemCollection to something else and return that instead.

private DataTable GetListItems()
{
    DataTable table = null;
    try
    {
        SPListItemCollection items = null;
        using (SPSite site = new SPSite(GetListSiteUrl()))
        {
            using (SPWeb web = site.OpenWeb())
            {
                // retrieve the list
                SPList list = web.Lists[_ListName];

                // more code to create the query...
                items = list.GetItems(query);

                // convert to a regular DataTable
                table = items.GetDataTable();
            }
        }
    }
    catch (Exception e)
    {
        // log error
    }
    return table;
}
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