Full-Text Search From EF4

gistfile1.cs

public static class ObjectQueryExtensions
{
    public static ObjectQuery<T> FullTextSearch<T, TProperty>(this ObjectQuery<T> query, Expression<Func<T, TProperty>> propertyExpression, string searchText)
    {
        var path = string.Join(".", propertyExpression.ToString().Split('.').Skip(1));

         return query.Where(string.Format("CONTAINS(it.{0}, @search_text)", path), new ObjectParameter("search_text", searchText));
    }
}