How to pass data from TextBox to variable?

Question

C++ / C#

Hello everyone, I'm learning c++, before that I coded quite complex things in a console application, up to creating and working with sqlite db. Now I switched to forms (I work in vs 2015). I created an authorization form (2 textboxes, for login and password and a login button). For the 2nd day I have been looking for how to transfer data from textboxes to variables by pressing a button. The whole point is that I can’t find (I don’t put the question to Google in the same way) how to do it in the studio, because. all answers go under c++ builder and qt which is not suitable.
All that I dug up is what needs to be done to handle the event on a click on the button.
And all that I could do was the processing itself, but what to write xs inside it (inside the .h file).
Experimented with writing code directly inside the handler. But that's not it. I need to write the main code in a .cpp form file. That is, in fact, I need to receive data from the .h file in the .cpp file (and I will also need to return it, but then in the future).
The most convenient option would be to write a handler in etc. in .cpp
Tell me how to do it or at least where to dig (preferably with examples)?
Thanks in advance.

Answer 1

Have you read this?
www.cyberforum.ru/cpp-cli-winforms/thread730668.html
http://forum.codenet.ru/q71678/How+how+to...
https://code-live.ru/post/first-windows -form/

Answer 2

Are you using MFC? Then see GetDlgItemText, GetDlgItemInt