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SharePoint: get SPListItem with a unique identifier

I am trying to get an SPListItem object from a unique identifier (GUID). From a look at several sites (incl. Http://sharepoint400.blogspot.com/2011/04/using-spsitedataquery-to-find-list.html and http://www.chakkaradeep.com/post/Retrieving-an- Item-from-the-RootWeb-and-Subwebs-using-its-UniqueId.aspx ) I came up with the code below.

const string QueryFormat =
@"<Where>
    <Eq>
        <FieldRef Name='UniqueId' />
        <Value Type='Lookup'>{0}</Value>
    </Eq>
</Where>";

            SPSiteDataQuery query = new SPSiteDataQuery();
            query.Webs = "<Webs Scope='SiteCollection' />";
            query.Lists = "<Lists BaseType='0'/>";
            query.Query = string.Format(QueryFormat, itemUniqueId);
            query.RowLimit = 1;
            //query.ViewFields = "<FieldRef Name='WebID' /><FieldRef Name='ListID' /><FieldRef Name='ID' />";

            var results = SPContext.Current.Web.GetSiteData(query);

However, no matter what ... It always seems to me that zero rows are returned. I do not understand why, because I know that the Guides that I use are correct.

Any ideas?

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2 answers

, Guid. :

<Where>
    <Eq>
        <FieldRef Name='UniqueId'/>
        <Value Type='Guid'>{0}</Value>
    </Eq>
</Where>
-1

QueryFormat. - :

"<Where><Eq><FieldRef Name=\"UniqueId\" /><Value Type=\"Lookup\">{0}</Value></Eq></Where>"

SharePoint .

Caml, : http://camldotnet.codeplex.com/ http://camlex.codeplex.com/

-2

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