删除按钮的所有处理程序: save.RemoveEvents ();

public static class EventExtension
{
    public static void RemoveEvents<T>(this T target) where T : Control
    {
       var propInfo = typeof(T).GetProperty("Events", BindingFlags.NonPublic | BindingFlags.Instance);
        var list = (EventHandlerList)propInfo.GetValue(target, null);
        list.Dispose();
    }
}

接受的答案不完整。对于声明为{add;删除;}

下面是工作代码:

public static void ClearEventInvocations(this object obj, string eventName)
{
    var fi = obj.GetType().GetEventField(eventName);
    if (fi == null) return;
    fi.SetValue(obj, null);
}

private static FieldInfo GetEventField(this Type type, string eventName)
{
    FieldInfo field = null;
    while (type != null)
    {
        /* Find events defined as field */
        field = type.GetField(eventName, BindingFlags.Static | BindingFlags.Instance | BindingFlags.NonPublic);
        if (field != null && (field.FieldType == typeof(MulticastDelegate) || field.FieldType.IsSubclassOf(typeof(MulticastDelegate))))
            break;

        /* Find events defined as property { add; remove; } */
        field = type.GetField("EVENT_" + eventName.ToUpper(), BindingFlags.Static | BindingFlags.Instance | BindingFlags.NonPublic);
        if (field != null)
            break;
        type = type.BaseType;
    }
    return field;
}

从删除所有事件处理程序:

Directly no, in large part because you cannot simply set the event to null. Indirectly, you could make the actual event private and create a property around it that tracks all of the delegates being added/subtracted to it. Take the following: List<EventHandler> delegates = new List<EventHandler>(); private event EventHandler MyRealEvent; public event EventHandler MyEvent { add { MyRealEvent += value; delegates.Add(value); } remove { MyRealEvent -= value; delegates.Remove(value); } } public void RemoveAllEvents() { foreach(EventHandler eh in delegates) { MyRealEvent -= eh; } delegates.Clear(); }

删除不存在的事件处理程序不会造成任何损害。因此，如果您知道可能存在哪些处理程序，您可以简单地删除它们。我刚遇到过类似的情况。这在某些情况下可能会有帮助。

如:

// Add handlers...
if (something)
{
    c.Click += DoesSomething;
}
else
{
    c.Click += DoesSomethingElse;
}

// Remove handlers...
c.Click -= DoesSomething;
c.Click -= DoesSomethingElse;

如果你真的要这么做……这需要深思熟虑和相当长的时间。事件处理程序在控件内的事件委托映射中进行管理。你需要

在控件实例中反射并获取此映射。 迭代每个事件，获取委托 每个委托可以依次是一系列链接的事件处理程序。调用obControl。RemoveHandler(事件处理程序)

简而言之，工作量很大。在理论上是可能的。我从没试过这样的东西。

看看是否可以对订阅-退订阶段有更好的控制/纪律。

你们对自己太苛刻了。很简单:

void OnFormClosing(object sender, FormClosingEventArgs e)
{
    foreach(Delegate d in FindClicked.GetInvocationList())
    {
        FindClicked -= (FindClickedHandler)d;
    }
}