获取创建对象总数的 C# 程序

C# 是一种通用编程语言，用于创建移动应用程序、桌面应用程序、网站和游戏。在 C# 中，对象是现实世界的实体。或者换句话说，对象是在运行时创建的运行时实体。它是一个类的实例。在本文中，我们将创建一个类的多个实例或对象，并计算在 C# 中创建的对象的数量。

方法：

• Create a class with the name DemoClass for which we are creating multiple objects.
• We create a class ( .i.e. GetCount) with the main method from which we will create multiple objects of the DemoClass.
• In the Democlass, we are going to define a static variable count and initialize it to 0.
• Create a constructor for DemoClass which increments the count whenever the object of DemoClass is created.
• Here we are defining it as static because a single copy of the variable is created and shared among all objects at the class level, so whenever we create a new object the value of count will not be lost.
• A static method (i.e. TotalCount ) is created to return the count value, Static methods are methods that are called on the class itself, not on an object.
• In the main method create multiple objects of DemoClass and call the TotalCount method using the class name (i.e. DemoClass).

示例 1：

C#

// C# program to illustrate the above concept
using System;
  
class DemoClass{
      
// The static variable count is used to store
// the count of objects created.
static int count = 0;
  
// Constructor of the class, in which count
// value will be incremented
public DemoClass() 
{ 
    count++; 
}
  
// Method totalcount is used to return 
// the count variable.
public static int TotalCount() 
{  
    return count; 
}
}
  
class GFG{
      
static void Main(string[] args)
{
      
    // Printing the number of objects before 
    // creating objects.
    Console.WriteLine("Total objects = " + 
                      DemoClass.TotalCount());
  
    // Creating the objects of DemoClass
    DemoClass C1 = new DemoClass();
    DemoClass C2 = new DemoClass();
    DemoClass C3 = new DemoClass();
  
    // Printing the number of objects after 
    // creating 3 objects.
    Console.WriteLine("Total objects = " + 
                      DemoClass.TotalCount());
}
}

输出：

Total objects = 0
Total objects = 3

示例 2：

C＃

// C# program to illustrate the above concept
using System;
  
class DemoClass{
  
// Here, the static variable count is used to 
// store the count of objects created.
static int count = 0;
  
// constructor of the class, in which 
// count value will be incremented
public DemoClass() 
{ 
    count++; 
}
  
// Method totalcount is used to return
// the count variable.
public static int TotalCount() 
{ 
    return count; 
}
}
  
class GFG{
      
static void Main(string[] args)
{
      
    // Printing the number of objects before
    // creating objects.
    Console.WriteLine("Total objects = " + 
                      DemoClass.TotalCount());
  
    // Creating the objects of DemoClass
    DemoClass C1 = new DemoClass();
    DemoClass C2 = new DemoClass();
    DemoClass C3 = new DemoClass();
    DemoClass C4 = new DemoClass();
    DemoClass C5 = new DemoClass();
    DemoClass C6 = new DemoClass();
  
    // Printing the number of objects after 
    // creating 3 objects.
    Console.WriteLine("Total objects = " + 
                      DemoClass.TotalCount());
}
}

输出：

Total objects = 0
Total objects = 6