Difference between public static void Main() and private static void Main() in C#?

Question

What is the difference between

public static void Main()

and

private static void Main()

in C#?

Answer 1

The difference between both is the only difference in public and private access modifiers because both are valid.It totally depends on the usage of application which one to use.
If you want to initiate entry point by any external program, (i.e. use as API, for testing purpose) then you might need to make it public so it is accessible.
If you know there is no external usage for the application then it is better to make it private so no external application get access to it.

Answer 2

There is difference, because first one is public and second one is private, so when you'd try to use the first one from outside the class it would work just fine, but wouldn't work with the second one.

However, there is no difference if you're trying to make one of these an entry point in you application. Entry point method can be either public or private, it doesn't matter.