C# Program to Get the Count of Total Created Objects
Last Updated :
30 Sep, 2021
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C# is a general-purpose programming language it is used to create mobile apps, desktop apps, websites, and games. In C#, an object is a real-world entity. Or in other words, an object is a runtime entity that is created at runtime. It is an instance of a class. In this article, we will create multiple instances or objects of a class and count the number of objects created in C#.
Approach:
- 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).
Example 1:
// 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());
}
}
Output:
Total objects = 0 Total objects = 3
Example 2:
// 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());
}
}
Output:
Total objects = 0 Total objects = 6
