Calling the same function for multiple objects in C# -

how can use function in c# accepts object parameter?

e.g., have many checkboxes in form of runs same procedure, not want write same function call inside each of checkbox events:

private void checkbox1_checkedchanged(object sender, eventargs e) {     if (checkbox1.checked)     {         callmyfunction();     } } 

what want create event handler listens of checkbox objects registered event. whenever checkbox_checkedchanged event triggered, function runs.

if checkbox 1 raising event, sender should checkbox. can check type of sender , use instead of explicitly naming checkbox:

private void checkbox_checkedchanged(object sender, eventargs e) {     checkbox cb = sender checkbox;     if(cb != null , cb.checked)     {         callmyfunction(cb);     } } 

you can add same handler checkboxes e.g.

checkbox1.checkedchanged += checkbox_checkedchanged; checkbox2.checkedchanged += checkbox_checkedchanged; ...