我的基本控制器类BaseController
由面向公众的控制器继承,以访问具有LINQ-to-SQL的请求之间的共享数据上下文。
HttpContext.Current.Items
中?DataContextHelper
class internal static class DataContextHelper
{
public static MyDataContext CurrentContext
{
get
{
if (HttpContext.Current.Items["MyDataContext"] == null)
{
MyDataContext context = new MyDataContext();
HttpContext.Current.Items["MyDataContext"] = context;
}
return (MyDataContext)HttpContext.Current.Items["MyDataContext"];
}
}
}
BaseController
类:public class BaseController : Controller
{
protected MyDataContext db
{
get {
return DataContextHelper.CurrentContext;
}
}
}
HomeController
类:[HandleError]
public class HomeController : BaseController // inherits db member
{
public ActionResult SomeAction(string id)
{
User user = db.Users.First(u => u.UserId == id);
// ... do stuff
db.SubmitChanges();
}
}
答案 0 :(得分:4)
是的,这是包含WebForms和MVC的所有主要ORM的常见模式。
我执行每个控制器操作后唯一要添加显式处理的东西。只是为了确保一切都正确处理。
在 BaseController.cs :
中 protected override void OnActionExecuted(ActionExecutedContext filterContext)
{
if (HttpContext.Current.Items["MyDataContext"] == null)
return;
var context = (MyDataContext)HttpContext.Current.Items["MyDataContext"];
context.Dispose();
}