使用Linq迭代ConfigurationManager.ConnectionStrings？

Question

可以这样做吗？

var strings = ConfigurationManager.ConnectionStrings;

var names = (from d in strings
             select new ConnectionName(d.Name));

Answer 1

是的,但因为ConnectionStrings没有实现强类型IEnumerable,你必须告诉LINQ集合包含什么类型.

使用from ConnectionStringSettings d in strings或ConfigurationManager.ConnectionStrings.Cast<ConnectionStringSettings>().