Question

I have a List<string> filterCriteria which contains one or multiple keywords to search a column in my database with based on user selection on the client side.

The problem i have is that im not quite sure on how to build my linq to sql statement as it could have no ‘or’ operator or it could have multiple (10+).

This is my original query

var originalQuery = (from p in productContext.Products
                         select p);

Then based on the list i need to query ‘originalQuery’ by the words in my List<string> filterCriteria using or operators.

E.g.

    originalQuery = originalQuery.Where(p => p.ProductRange == "criteria1" || 
    p.ProductRange == "criteria2");

And so on…

Answer 1

You could do it like this:

originalQuery = originalQuery.Where(p => filterCriteria.Contains(p.ProductRange));

This way, you will get all items in the originalQuery which have one of the selected values for ProductRange.