Activate or deactivate EventHandler using a variable-CodePudding

Is there any way to merge these voids into one? I have a lot of controls that use the same event and during execution are activated and deactivated

private void activate()
{
   tb1.TextChanged  = eventFil;
   tb2.TextChanged  = eventFil;
   cb1.CheckStateChanged  = eventFil;
   cb2.CheckStateChanged  = eventFil;            
}
private void deactivate()
{
   tb1.TextChanged -= eventFil;
   tb2.TextChanged -= eventFil;
   cb1.CheckStateChanged -= eventFil;
   cb2.CheckStateChanged -= eventFil;            
}

Like this

private void activate(operator aux)
{
   tb1.TextChanged aux eventFil;
   tb2.TextChanged aux eventFil;
   cb1.CheckStateChanged aux eventFil;
   cb2.CheckStateChanged aux eventFil;            
}

Or like this

private void activate()
{            
   aux(c => c  = eventFiltre);
}

private void deactivate()
{            
   aux(c => c -= eventFiltre);
}

private void aux(Action<EventHandler> aux)
{
   aux(tb1.TextChanged);
   ....
}

CodePudding user response：

I think it's not possible do that because = and -= only can appear on an assignement. You can have all in one method for better maintenance, but with two sentences for each event:

private void EnableEvents(bool enabled = true)
{
   if (enabled)
   {
      tb1.TextChanged  = eventFil;
      tb2.TextChanged  = eventFil;
      cb1.CheckStateChanged  = eventFil;
      cb2.CheckStateChanged  = eventFil;            
   }
   else
   {
      tb1.TextChanged -= eventFil;
      tb2.TextChanged -= eventFil;
      cb1.CheckStateChanged -= eventFil;
      cb2.CheckStateChanged -= eventFil;            
   }
}

CodePudding user response：

You can use one method like this

//you can pass for value activate and deactivate
private void Operate(string value)
{
   if(value = "activate")
   {
       tb1.TextChanged  = eventFil;
       tb2.TextChanged  = eventFil;
       cb1.CheckStateChanged  = eventFil;
       cb2.CheckStateChanged  = eventFil;  
   }
   else
   {
       tb1.TextChanged -= eventFil;
       tb2.TextChanged -= eventFil;
       cb1.CheckStateChanged -= eventFil;
       cb2.CheckStateChanged -= eventFil;
   }      
}