C sharp Structure &uses and Advantages

Programs, namespaces, types, members, and assemblies are the main organizing notions in C#. Programs define types, which have members and can be namespace-organized. Types include things like interfaces, classes, and structs. Examples of members include fields, methods, attributes, and events. Programs written in C# are physically bundled into assemblies during compilation. Depending on whether they implement programs or libraries, assemblies commonly terminate in either.exe or.dll.
As a small example, consider an assembly that contains the following code:

namespace Acme.Collections;

public class Stack<T>
{
Entry _top;

public void Push(T data)
{
_top = new Entry(_top, data);
}

public T Pop()
{
if (_top == null)
{
throw new InvalidOperationException();
}
T result = _top.Data;
_top = _top.Next;

return result;
}

class Entry
{
public Entry Next { get; set; }
public T Data { get; set; }

public Entry(Entry next, T data)
{
Next = next;
Data = data;
}
}
}