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Asked: 2026-05-10T21:30:47+00:00

This seems like a very simple and a very common problem. The simplest example

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This seems like a very simple and a very common problem. The simplest example I can think of is this:

The form has five checkboxes with a ‘check all/check none’ checkbox above them. When a user selects checking all checkboxes, I toggle the states of the ‘children’ – obviously I don’t want to fire the check events of all the children until I am done setting all of the checkboxes.

I can’t find a form-wide suspend control event. If I’m simply missing it then great simple answer. Barring a simple solution that I am just missing, what is the best way (best practice? accepted solution?) to suspend form control events?

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  1. I’ve come across this before and usually seen people do this:

    /*SNIP*/  private bool isMassUpdate;  public void Check1_Check(object sender, EventArgs e) {    if(!isMassUpdate)    {        do some stuff    } }  /*SNIP*/

    You can also detach and reattach the event handlers, however, I’m told this can be a source of memory leaks.

    Information on memory leaks and event handlers: They’re not directly linked to attaching and detaching, but we’ve seen in one of our applications that bad referencing of event handlers down inheritance trees can cause it.

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