Is the private method closed? Use reflection to call the private method of an object ., Private closed

Is the private method closed? Use reflection to call the private method of an object ., Private closed

When we learn C #, the first set of keywords that we encounter may be Private, Public, and protect.

The definition of Private is: the methods and variables defined with this keyword can only be used inside the object.

But is this absolute? Is there a way to use Private-defined methods or variables in the caller's space?

Let's define the following class:

Can we access _ priavateValue in this simple program?

When we try to compile this simple program, we will get a compilation error.

'Privatecallbyreflection. testObj. returnPrivateValue () 'is inaccessible due to its protection level

So private is actually safe and can only be accessed internally?

A small trick can get the desired result.

Pay attention to the underlined code.

Reflection helps us access a Private method.

There is no lower limit of reflection. There is really nothing to do with it .....