C# WinForms. How to pass a value through a button from one form to another?

Question

C++ / C#

I have a form in which, depending on the button pressed, something must be passed to another form in order for it to start using the received value, how to do this?

Answer 1

There are hundreds of ways to do this. Okay, not hundreds, but dozens. Here are a few:
1. Passing through the constructor
2. Class methods
3. Class variables
4. Callback
5. Just manipulate the form before opening
About the 5th in more detail:
The form object (form) can be created automatically (as the main form), or it can be created dynamically .
Are you creating the window dynamically? If so, then creating a window may not cause it to appear on the screen soon.
Those. creating a window is one thing, but showing a window is another. In total, you create a window, set the necessary values ​​for controls, variables, properties, etc., and then display the window.
Either way, you have very little knowledge. I recommend reading and looking at examples. Better yet, understand the basics of WinForm.
You need to understand that the form class is a regular class and you can do whatever you want with it, whenever you want.

Answer 2

WorldHello via System.Windows.Forms.KeyPressEventHandler / System.Windows.Forms.KeyPressEventArgs and the like