What types of objects can be in the managed memory area (heap)?

Objects of reference types are located in the managed memory area (heap) in C#. These can include:

• Class instances
• Arrays
• Delegates
• Strings (string) — although they have special features, they are also stored in the heap

Value types (struct, enum) are usually stored on the stack if they are local variables, or inside an object in the heap if they are fields of a class.

Example:

class Person
{
    public string Name; // string in the heap
    public int Age;     // value in the object
}

Person p = new Person(); // Person object in the heap
p.Name = "Ivan";       // string "Ivan" also in the heap