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C# adding infinity loop in button click event and break it with another button click event

I tried to make a while (work){....}
inside button event called start
to do some stuff like label changing in the same form with random values
and I have another button called stop I want to make the work=false; so the while should be break
the problem is when I clicked start button and the form froze and did nothing
how I can do that like stay in the while loop and access all other events

As long as the loop runs, no events (like your other button's click) can be processed. This results in freezing the UI.
Better use a Timer instead of an infinite loop. The timer will not freeze the UI but call a Tick event at defined intervals and allow other events to be processed between two ticks. It is then easy for another button to stop this timer.
Since you have not mentioned any UI technology (is it WinForms, WPF, WebForms, MAUI, Xamarin, ...?) and not shown any code, it is difficult to give you example code.

How to start timer in Visual Studio 2010 Form Application

this is my first time posting, but I was wondering how i can get a timer to increment once i start my program. I have the timer and the stop button, and i can get it to start if i have a start button to press, but i want it to start once the application is opened as there are multiple timers one after another in the game i'm making. thanks everyone. i tried searching this, but couldn't find anything. I'm still pretty new to app programming so it's not something i have done before and don't even know what to try for it.

Welcome,
I would suggest to locate the FormLoad eventhandler (either by double clicking the form or by looking in the properties window (look for the lightening icon) and search for the Load eventhandler.
Or you could try to use the FormShown eventhandler, which will be triggered when the form is actually shown instead of loaded. Depending on what you are trying to achieve, this might be a better option.
Either way, you will need to put
Timer.Start()
inside such an event handler.
Hope it helps.

In Form's Load event (doubleclick on form) you can use
timer1.Start();

You can start a timer by simply calling Timer.Start()
When to call this depends on the trigger. Typically you write this in an event handler, of the "button click event" like you mention, or the app's "app start event" such as the Main method, but this depends on what kind of app (WinForms?) you are writing.

You can start timer on starting the program either by starting the timer in the following way:
public Form1()
{
InitializeComponent();
time.Start();
time.Tick += time_Tick;
}
or by initiating the timer in Form Load Event Handler

C# - Iterate through form components (not controls)

My form has a number of Timer components that I am seeking to loop through at runtime. My goal is to stop all timers on the form at once.
I tried adapting some code I had to do the same thing with controls however it doesn't appear to be working.
foreach (var tmr in this.components.Components.OfType<Timer>())
{
tmr.Stop();
}
Any help would be appreciated.

Stopping a Winforms Timer means that no more Timer messages (WM_TIMER) are posted to the message queue. But any previous WM_TIMER message still in the message Queue will be processed. So multiple Tick Events might be processed even after the Timer has been stopped when you have created Timer messages faster then they can be processed.
Update:
Checking the source reveals that the Winforms Timer swallows WM_TIMER messages when the timer has been stopped and won't fire any Tick Events then. So this is not the correct answer.

Do firing events in C# block the current thread execution?

If I'm firing the event:
var handler = OnMyEvent;
if (handler != null)
{
handler(some_info);
}
then will the execution thread wait until all suscriber methods return to continue the execution after line:
handler(some_info);
?
Or events are fired "in another thread", meaning that it automatically goes to the next line after handler(some_info)?

Events are fired on the same thread and it will block until they are completed. Of course the event handling code itself can spawn another thread and return immediately but this is completely different matter.
Also note that events like button clicks in a desktop applications like Windows Forms apps are put on a message queue and will fire one at a time. i.e. if you press a button and then press another button the second button event will not fire until the first is completed. Also the form will not repaint and will be "not responding" because painting the form is also an event.

Events are fired in the thread that raised them.

Signalling a event handler when two particular events have occured

My dotnet application handles the following SystemEvents.
Systems.SessionSwitchEvents
Reason : Lock and Unlock
Systems.OnPowerModeChanged
Modes : Resume and Suspend
Network events
Now the Resume event triggers 3 events
unlock , resume and some network events ( some times it triggers multiple network events (up/down ) not stabilized)
Now i have a functionality which is all the same for all these events which i have implemented in thier corresponding event handlers.
I want a sync when a resume event occurs.
basically want to signal the resume event handler when both unlock and network Up events have occured until then the Resume event handler should sleep.
IS there a way to signal my resume event handler when two events occur.
Thanks

It sounds like you need to count your events and block until they have all been triggered. A Countdown type would be appropriate. See this example Countdown event.