Linq In语句相当于 select wher in
string[] cities =new string[] { "Seattle", "London", "Vancouver", "Paris" };
var q = db.Customers.Where(p=>cities.Contains(p.City)).ToList();
string[] cities =new string[] { "Seattle", "London", "Vancouver", "Paris" };
var q = db.Customers.Where(p=>cities.Contains(p.City)).ToList();
