using System;
public class MyClass {
    private int[] data;
    public MyClass(int size) {
        data = new int[size];
        Console.WriteLine(“MyClass instance created”);
    }
    ~MyClass() {
        Console.WriteLine(“Destructor (finalizer) called for MyClass”);
    }
}
public class MainClass {
    public static void Main(string[] args) {
        // Create an instance of MyClass
        MyClass myObj = new MyClass(1000000);
        // Let’s pretend we do something with myObj
        // The destructor (~MyClass) will be automatically called when myObj is no longer in use
        // It’s not necessary to explicitly call the destructor in C#
        // Force garbage collection to demonstrate the finalizer being called
        GC.Collect();
    }
}

MyClass instance created

using System;
public class Resource : IDisposable {
    private bool disposed = false;
    public void DoSomething() {
        if (disposed)
            throw new ObjectDisposedException(“Resource”);
        Console.WriteLine(“Resource is being used.”);
    }
    // Implement IDisposable.
    public void Dispose() {
        Dispose(true);
     }
    protected virtual void Dispose(bool disposing) {
        if (!disposed) {
            if (disposing) {
                // Release managed resources.
                Console.WriteLine(“Disposing managed resources.”);
            }
            // Release unmanaged resources.
            Console.WriteLine(“Disposing unmanaged resources.”);
            disposed = true;
        }
    }
    // Finalizer
    ~Resource() {
        Dispose(false);
        Console.WriteLine(“Finalizer (destructor) called for Resource.”);
    }
}
public class MainClass {
    public static void Main(string[] args) {
        using (Resource resource = new Resource()) {
            resource.DoSomething();
        }
    }
}

//Output (আউটপুট)
Resource is being used.
Disposing managed resources.
Disposing unmanaged resources.