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C#

Cannot access the setter of the property

Let's assume we have an event called RoundLeveledUp, a property called CurrentRound, that has a private setter. And finally a method called OnRoundLeveledUp(object sender, EventArgs e) which fires the event if it's not null.

First let's represent this in code

public event EventHandler RoundLeveledUp;
public int CurrentRound{get; private set;}
public void OnRoundLeveledUp(object sender, EventArgs e)
{
          //Firing the event if it's not *null*
          RoundLeveledUp?.Invoke();
}     

and we want to expose our property so that when any body set it value some event is triggered when the value of CurrentRound is changed we do this:

int _currentRound;
public int CurrentRound
{
          get=>_currentRound;
          private set
          {
                    _currentRound=value;
                    OnRoundLeveledUp(this, null);
          }
}

till now, we (or i can say "I") 100% good ! When i attempt to set CurrnetRound from a method with-in the class called Start() and i set a break point to see. Actually it doesn't jump to the setter and fire the event after setting the value Why is that for

thanks in advance!

7 Answers

Steven Parker
Steven Parker
231,171 Points

When does "RoundLeveledUp" get set? In the code shown here it is declared but never set, so the method with the null-coalescing membership operator would never get called.

U mean when did we subscribed to the event? Even when I put a break point it doesn't jump to the OnRoundLeveledUp

Steven Parker
Steven Parker
231,171 Points

Where's the breakpoint? Inside the setter? Are you sure you're doing "step into" and not "step over"?

I have a method called start which calls OnRoundLeveledUp(object source, EventArgs e) I put a break point in the call of Start() in the Main method

Steven Parker
Steven Parker
231,171 Points

And did you "step into" all the way through the calls it makes?

first I step into the Start() method walk throw each line and If this line is a call for some another method it jumps to it. and after returning the value or after the work is finished (if it's void) it returns to the start method and continues executing lines when I set the CurrentRound property, it doesn't jump to the setter or didn't even execute call OnCurrentRoundLeveledUp to fire up the event

yep. you know the down arrow in visual studio 2017 which u use in debugging are breakpoints right ? I click this little button

Steven Parker
Steven Parker
231,171 Points

Do you have a repo or workspace to share the entire project for a more complete analysis?

unfortunately, i dont have any. in face u dont need a repo to get what I`m tyin to say. What i'm tryna say : simply the property is been set by the method I put in the setter in order to execute some event doesn't get called

Steven Parker
Steven Parker
231,171 Points

I understand the issue as you have described it, but I don't see anything in the code snippets you have shown here that might explain it. I think at this point it would be necessary to replicate your environment using the complete code to be able to observe the problem and to provide an analysis and a solution to the issue.

Well... you can copy all the code I written, put it in a class and execute it using any online compiler and u will get what i'm tryin' to say