How to use Dynamic LINQ (System.Linq.Dynamic) for LIKE operation?

Question

Can any body tell me how can I use a LIKE operator using System.Linq.Dynamic?

I need to add more than one LIKE expression in my dynamic where query

Answer 1

Just add more where clauses

var query = db.Customers.Where(c=>c.CityName.contains("London"));
query = query.Where(c=>c.CityName.contains("USA"));
query = query.Where(c=>c.CityName.contains("Johannesburg"));

but the above query will create it :

select * from Customer where CityName like "london" and CityName like "USA" etc...

you want

select * from Customer where CityName like "london" or CityName like "USA" etc...

To use Dynamic Created or statements you can use predicatebuilder there's really alot of functionality there that you can use...

http://www.albahari.com/nutshell/predicatebuilder.aspx

var predicate = PredicateBuilder.False();
predicate = predicate.Or(c=>c.CityName.Contains("London"));
predicate = predicate.Or(c=>c.CityName.Contains("USA"));
predicate = predicate.Or(c=>c.CityName.Contains("Johannesburg"));