in c# are methods private by default?

Question

If I have a method that does not specify its Accessibility Level will it be Private by default?

void Item_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
    throw new NotImplementedException();
}        

Is the above method private?

Answer 1

It is. The general rule if you don't define any modifier is "the most restricted modifier that can be applied here is used", so private for methods, internal for top-level classes, etc.

Answer 2

是的，它是私人的。

Answer 3

For a method inside a class, default is private. It does vary based on the scope of where things are declared, here's an MSDN link with more specifics

Answer 4

Yes, for methods, like your example.

Class and struct members, including nested classes and structs, have private access by default.

But that is not correct for all the access modifiers:

Classes, records, and structs declared directly within a namespace (in other words, that aren't nested within other classes or structs) can be either public or internal. internal is the default if no access modifier is specified.

I consider this a good idea, because by default in OO, everything should be private and only what is really needed should be marked public.

https://learn.microsoft.com/en-us/do.net/csharp/programming-guide/classes-and-structs/access-modifiers