Datatable does not contain a definition for AsEnumerable using LinqBridge1.1 in C#2.0

i'm trying to use linq in c#2.0(linqbridge) to search for a patient name in my database,
but i'm getting the following errors:
System.Data.Datatable does not contain a definition for AsEnumerable()
System.Data.Datatable does not contain a definition for CopyToDataTable()

I added the linqBridge.dll reference to my project.
And i'm using:

using System.Linq;

            List<string> names = name.Split(' ').ToList();
             SqlConnection con = new SqlConnection(m_connection_string);
             SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM PATIENT", con);
             DataSet ds = new DataSet();
             da.Fill(ds);
 
             var query =
             from pat in ds.Tables["PATIENT"].AsEnumerable().Where(c => names.All(val => c.PAT_SEARCH_NAME.Contains(val)))
             select pat;
 
             DataTable table = query.CopyToDataTable();
 

What am i doing wrong?
I already read that this version of LinqBridge(1.1) does not contain this methods..
Is there a way to solve this?

Thanks.

---