对现有的对象C＃的'新'的关键字 [英] C# The 'new' keyword on existing objects

问题描述

我想知道是什么发生了一个对象（在C＃），一旦其参考变为重新分配。例如：

I was wondering as to what happens to an object (in C#), once its reference becomes reassigned. Example:

Car c = new Car("Red Car");
c = new Car("Blue Car");

由于参考重复使用，并垃圾收集处置/处理红车这是丢失后，它的参考？还是一个单独的方法需要落实处置红车的？

Since the reference was reused, does the garbage collector dispose / handle the 'Red Car' after it's lost its reference? Or does a separate method need to be implemented to dispose of the 'red car'?

我主要想知道，因为有我要去参加一个比较大的对象回收，并且需要知道，如果有什么事情，当它被重建了应该做的。

I'm primarily wondering because there's a relatively large object that I'm going to recycle, and need to know if there is anything that should be done when it gets recreated.

推荐答案

在你的榜样，在红车 实例ç将成为符合垃圾收集时， C 分配给蓝色车。你不需要做任何事情。

In your example, the Red Car instance of c will become eligible for garbage collection when c is assigned to Blue Car. You don't need to do anything.

看看这个（老了，但仍然相关）MSDN有关.NET垃圾收集器的文章。 http://msdn.microsoft.com/en-us/magazine/bb985010.aspx

Check out this (old, but still relevant) MSDN article about the .NET garbage collector. http://msdn.microsoft.com/en-us/magazine/bb985010.aspx

第一段说，这一切：

垃圾收集在Microsoft .NET公共语言运行时环境完全免除从跟踪内存使用情况，并知道何时释放内存的开发者。

Garbage collection in the Microsoft .NET common language runtime environment completely absolves the developer from tracking memory usage and knowing when to free memory.

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