How to search in a defined Site programmatically (SP Foundation)

Question

I'm trying to get files from a Site... When i launch my query the crawler returns me data from all application on the SP installation..

The thing I'd like to do is to "restrict" this scope to a single site or site collection..

How could i do?

My code is something like this:

fullsite = URL;
myToken = UserToken;

Microsoft.SharePoint.SPSecurity.RunWithElevatedPrivileges(delegate()
            {
                using (SPSite scSite = new SPSite(fullsite, myToken))
                {
                    if ((searchAllObj.tt_group_array == null) || (searchAllObj.tt_group_array.Length == 0))
                    {
                        using (SPWeb webRoot = scSite.OpenWeb())
                        {
                            webRoot.AllowUnsafeUpdates = true;
                            scSite.AllowUnsafeUpdates = true;

                            queryComposta = "keyword + Tag:Tag1 Network:NT"; //Tag and Network are working props                                  

                            KeywordQuery keywordQuery = new KeywordQuery(scSite);
                            keywordQuery.ResultTypes = ResultType.RelevantResults;
                            keywordQuery.QueryText = queryComposta.ToString();

                            ResultTableCollection searchResultTables = keywordQuery.Execute();
                  }
            }
      });

EDIT: I'm on SP Foundation with search server 2010 express installed!

Answer 1

I suppose KeywordQuery.HiddenConstraints property can help. http://www.mstechblogs.com/paul/sharepoint-2010-keywordquery-and-the-hiddenconstraints-property. It appears that you can define scope restrictions with it. And there's a scope for limiting query to particular site: This Site: (http://technet.microsoft.com/en-us/library/gg185660.aspx).

Answer 2

Simply append the following to your search query:

site:"your-site-url"

Answer 3

Check this article : http://extreme-sharepoint.com/2011/10/28/sharepoint-keywordquery/. See the section Using Scopes in KeywordQuery