Understanding C# field initialization requirements

Question

Considering the following code:

public class Progressor
{
    private IProgress progress = new Progress(OnProgress);

    private void          


        

Answer 1

Section 10.5.5.2: Instance field initialization describes this behavior:

A variable initializer for an instance field cannot reference the instance being created. Thus, it is a compile-time error to reference this in a variable initializer, as it is a compile-time error for a variable initializer to reference any instance member through a simple-name

This behavior applies to your code because OnProgress is an implicit reference to the instance being created.