计算类的实例 [英] Count instances of the class

问题描述

可能重复：

是否可以获取所选类的活动（已创建但尚未销毁）的实例数？ / p>

例如

  public class MyClass 
 {
} 
 
 c1 = new MyClass（）; 
 c2 = new MyClass（）; 
 
 count = GetActiveInstances（typeof（MyClass））
  

如果GC销毁任何这些类然后1或0。

解决方案

您可以在程序中保存全局静态计数器。
这是一个简单的线程安全解决方案：

  class MyClass 
 {
 static int counter = 0; 
 
 public MyClass（）
 {
 Interlocked.Increment（ref counter）; 
} 
 
〜MyClass（）
 {
 Interlocked.Decrement（ref counter）; 
} 
} 
  

也看看下面的类似问题 - a href =http://stackoverflow.com/questions/1168746/c-sharp-count-number-of-objects-of-class-type-within-class-method>在类中计算类类型的对象数方法

Possible Duplicate:
how can i find out how many objects are created of a class in C#

Is it possible to get number of instances which is active(created and not yet destroyed) for selected class?

For example

public class MyClass
{
}

    c1 = new MyClass();
    c2 = new MyClass();

    count = GetActiveInstances(typeof(MyClass))

should return 2. If GC destroy any of these classes then 1 or 0.

解决方案

You can holds global static counter in your program.
This is a simple thread safe solution:

class MyClass
{
    static int counter = 0;

    public MyClass()
    {
        Interlocked.Increment(ref counter);
    }

    ~MyClass()
    {
        Interlocked.Decrement(ref counter);
    }
}

also take a look at the following similar question - Count number of objects of class type within class method

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