c# – Windows窗体复选框已更改vs已更新？

As I understand it,the CheckedChanged event will fire on both the
listbox selection change (setting the checkbox values for that item)
AND on the user click. I need a way to split them out.

是的,你是对的,当你更新checkBox状态时会引发CheckedChanged事件(当你猜测ListBox.SelectedIndexChanged事件或类似的东西时你会这样做).

您需要的是在更新CheckBox状态之前禁用处理程序.

private void myListBox_SelectedIndexChanged(object sender,System.EventArgs e)
{
    //disable checkbox event
    mycheckbox.CheckedChanged -= mycheckbox_CheckedChanged;

    //you can change the checkbox state here
    //...

    //Activate event
    mycheckbox.CheckedChanged += myListBox_SelectedIndexChanged;
}

private void mycheckbox_CheckedChanged(object sender,System.EventArgs e)
{
    //(...)
}

另一种可能的模式是使用标志,因此在您通过代码更新复选框状态期间不要监听CheckedChanged事件.

private bool flagactivated = true;

private void myListBox_SelectedIndexChanged(object sender,System.EventArgs e)
{
    //disable checkbox event
    flagactivated = false;

    //Do stuff
    //(...)

    //Activate event
    flagactivated = true;
}

private void mycheckbox_CheckedChanged(object sender,System.EventArgs e)
{
    if (flagactivated) 
    {
        //do stuff
    }
}