在控制器中创建对象，确保了IDisposable呼叫，并移交给查看 [英] Ensuring IDisposable call on objects created in the controller and handed off to view

问题描述

我一直都知道，所有的优秀的程序员调用Dispose实现了IDisposable，情况点EF的ObjectContext类的任何对象。

I have always known that all good programmers call Dispose on any object that implements IDisposable, case in point the ObjectContext class in EF.

我是新来asp.net的MVC所以这可能是一个noob问题但在这里不用...

I am new to asp.net mvc so this may be a noob question but here goes...

    public ActionResult Index()
    {
        using (var db = new MyObjectContext())
        {
            return View(db.People);
        }
    }

如果我运行这个code我得到的，因为ObjectContext的已被释放的视图呈现数据之前采取行动的错误（的ObjectDisposedException）。是否有一种不同的方法吗？如何确保我的对象得到尽快处理掉越好？

If I run this code I get an error (ObjectDisposedException) because the ObjectContext has been disposed of before the View takes action on the data. Is there a different approach here? How can I ensure my objects get disposed of as soon as possible?

推荐答案

重写Controller.Dispose（）方法，并在那里你的对象处置：

Override the Controller.Dispose() method and dispose of your object in there:

private IDisposable _objectToDispose;

public ActionResult Index() {
  var db = new MyObjectContext();
  _objectToDispose = db;
  return View(db.People);  
}

protected override void Dispose(bool disposing) {
  if (disposing && _objectToDispose != null) {
    _objectToDispose.Dispose();
  }
  base.Dispose(disposing);
}

MVC框架会自动在请求结束调用Controller.Dispose（）。

The MVC framework will automatically call Controller.Dispose() at the end of the request.

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