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List<student> query =(List< BuildingNumber>)from student
Name in student
orderby student.Name ascending
select student;
orderby student.Name ascending
select student;
无法将类型为“System.Linq.OrderedEnumerable`2[student,System.String]”的对象强制转换为类型“System.Collections.Generic.List`1[student]”。
var query =from student
in student.AsEnumerable<BuildingNumber>()
orderby student.Name ascending
select student ;
orderby student.Name ascending
select student ;