[英]static classes for database access?
I am using DataClassesDataContext to map all the tables from the db into my asp.net application. 我正在使用DataClassesDataContext将db中的所有表映射到我的asp.net应用程序中。
For doing CRUD operations i have made static classes with methods, and inside every method a instantiate DataClassesDataContext. 为了进行CRUD操作,我使用方法创建了静态类,并在每个方法中实例化了DataClassesDataContext。
For instance: 例如:
public static class UserQ
{
public static User getUserById(int userId)
{
DataClassesDataContext db = new DataClassesDataContext();
var requestedUser = (from u in db.Users
where u.User_id == userId
select u).First();
if (requestedUser != null)
return (User)requestedUser;
else
return null;
}
}
I aam not sure if this way of doing database operations in a web application is safe? 我不确定这种在Web应用程序中执行数据库操作的方式是否安全? If not, can you suggest please a better pattern?
如果没有,你能建议一个更好的模式吗?
As DataClassesDataContext implements IDisposable
, you should be wrapping it with a using directive: 由于DataClassesDataContext实现了
IDisposable
,您应该使用using指令包装它:
using (DataClassesDataContext db = new DataClassesDataContext())
{
...
}
I would be very very careful about using STATIC in web applications. 在Web应用程序中使用STATIC我会非常小心。 Sometimes the bugs are so subtle that you will spend a lot of time debugging.
有时错误是如此微妙,你将花费大量时间调试。
I think bnkdev & Oded hit the nail on the head: look at repository pattern & wrap your context call in a using statement... 我认为bnkdev和Oded击中头部:查看存储库模式并在using语句中包装您的上下文调用...
HTH. HTH。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.