memory management for a value and reference type

2018-06-29 14:13:47

I have searched about the subject of reference type vs value type in C# and data allocation in stack and heap.

From these sources , stackoverflow question and this article, I make this conclusion :

The value of reference type is stored on the heap, and the adress of this value is stored on the stack

A value type is stored on the stack

Local variables of running function are stored in the stack

Global variables are stored on the heap

I have few questions :

If I had a global variable and it is a value type. where it will be stored?

If I had a local reference type variable. where it will be stored?

Why it is recommended to write this :

public class OurClass()
{
   public ClassA objA;  
   public OurClass()
   {
    objA = new ClassA();
   }
}

Instead of writing

 public class OurClass()
    {
       public ClassA objA = new ClassA(); 
       public OurClass()
       {

       }
    }

Did it have relation with allocation performance?

Thanks,

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