C# 程序获取创建对象总数
原文:https://www . geesforgeks . org/c-sharp-program-to-get-count-total-created-objects/
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，对象是真实世界的实体。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。
进场:
- Create a class named DemoClass, and we are creating several objects for it.
- We use the main method to create a class (GetCount), from which we will create several objects of DemoClass.
- In Democlass, we will define a static variable count and initialize it to 0.
- Create a constructor for DemoClass, which increments the count every time an object of DemoClass is created.
- We define it as static here, because a single copy of a 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.
- Create a static method (TotalCount) to return the count value. The static method is a method called on the class itself, not a method called on the object.
- Create multiple objects of DemoClass in the main method, and call the TotalCount method with the class name (DemoClass).
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
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
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