How can we come to know related to class:

Question

How can we come to know related to class: 1. How many objects have created for the class 2. How can we delete a particular object of the class 3. Can we treat class as an array?

bilnaad · Answer

1: I don't know a way that the Framework could provide. But it's an option to let the class itself do the counting. Create a public static int ClassCount. Everytime a constructor is called do a increment. Everytime the destructor is called decrement ClassCount. 2: You can't destroy the objects by yourself. the GarbageCollector (GC) does the job for you. But you can force the GC to start destroying objects that have no references left using GC.Collect(); Here is an example: namespace csConsole { using System; class MyClass { public string name; public static int ClassCount; static MyClass() { ClassCount = 0; Console.WriteLine(Static Constructor: ); } public MyClass():this(No name){} public MyClass(string name) { this.name = name; ClassCount++; Console.WriteLine(Public Constructor: +name); } ~MyClass() { ClassCount--; Console.WriteLine(Deconstructor: +name); } } class Start { public static void Test() { MyClass c0 = new MyClass(Test+MyClass.ClassCount); MyClass c1 = new MyClass(Test+MyClass.ClassCount); MyClass c2 = new MyClass(Test+MyClass.ClassCount); MyClass c3 = new MyClass(Test+MyClass.ClassCount); } public static void Main() { Test(); GC.Collect(); GC.WaitForPendingFinalizers(); MyClass c0 = new MyClass(Test+MyClass.ClassCount); Console.WriteLine(string.Format(

{0} objects of MyClass counted... MyClass.ClassCount)); Console.Read(); } } }

amit_gupta14 · Answer

1.How many objects have created for the class 2. How can we delete a particular object of the class From 1: I want to know how can we count how many objects has already ben created for a class. e.g. class1 obj1=new class1() class1 obj2=new class1() class1 obj3=new class1() In the above there are 3 objects created for class1. How can we come to know in code that there are 3 objects created at runtime From 2: If we create a object can we destroy it also. I mean can we destroy/delete the obj2 object from above example

denkai · Answer

1. Don't understand the question. 2. Don't understand the question. 3. Indexers can be used for this see my answer to your other post. About 1 and 2 if you are wondering how you can find out if a class is derived from another class at runtime you can do this by querying your object instance Type. MyClass x = new MyClass(); x.GetType().IsSubclassOf(typeof(MyBaseClass)); Cheers Dom