What are the best practices for Private Member Instantiation/Initialization? [duplicate]

Answer 1

They are identical as far as the IL is concerned.

The compiler turns this:

class Foo
{
    int bar = 1;
}

into this:

class Foo
{
    int bar;

    public Foo()
    {
        this.bar = 1;
    }
}

Even if you add a constructor yourself like this:

class Foo
{
    int bar = 1;

    public Foo(int bar)
    {
        this.bar = bar;
    }
}

The compiler turns it into this:

class Foo
{
    int bar;

    public Foo(int bar)
    {
        this.bar = 1;
        this.bar = bar;
    }
}