Search Feature using .Contains with terms within a one field

问题

I have built a search feature for a product site. The search works fine. Recently, we have added a SearchTerm field in the database. SearchTerm Data example: "work shoes blue black gear" Current code is

    pM = (from p in ctx.Products
                      where
                            p.productSearchField.Contains(term) ||
                            p.productName.Contains(term)
                      select p).ToList()

If the term = "shoes" <-- works

If the term = "work shoes" <-- works

If the term = "black shoes" <-- does NOT work.

I also tried to separate the SearchTerm Data by commas, but that did not work. Any advice?

回答1:

Split the term into single terms. See if any match:

term.Split(' ').Any(i => p.productSearchField.Contains(i))

Or if every word has to match:

term.Split(' ').All(i => p.productSearchField.Contains(i))

---

EDIT

             var terms = term.Split(' ');
             pM = (from p in ctx.Products
                  where
                        terms.All(i => p.productSearchField.Contains(i)) ||
                        p.productName.Contains(term)
                  select p).ToList()

来源：https://stackoverflow.com/questions/8450887/search-feature-using-contains-with-terms-within-a-one-field