清除控制不处置这些 - 什么是风险？ [英] Clear controls does not dispose them - what is the risk?

问题描述

有多个线程（一个，的b ，<一个href="http://stackoverflow.com/questions/1378668/clearing-controls-from-flowlayoutpanel-not-calling-destructors">c等等）关于的事实清除（）在.NET组件容器荷兰国际集团的项目没有处置他们（通过调用Dispose（的真正的）

There are multiple threads(a, b, c etc.) about the fact that Clear() ing items in the .NET component containers does not Dispose them(by calling Dispose(true).

最常见的，恕我直言，清除-ED组件不再使用的应用程序，因此它需要显式地从父容器清除它们后处理完毕。

Most frequently, IMHO, the Clear-ed components are not used anymore in the application, so it needs explicitly be Disposed after Clearing them from the parent containers.

也许是个不错的想法，收集的清除方法有一个布尔参数处理，当真正的还部署了它从列表中删除之前集合中的元素？

Maybe is a good idea that collection's Clear method had a bool parameter dispose that when in true also disposes the collection elements before its removing from the list?

推荐答案

问计这样的修改是没有意义的，Windows窗体团队已经解散前一段时间。它是在维护模式下，只有安全问题和操作系统不兼容的考虑。

Asking for modifications like this is pointless, the Windows Forms team has been disbanded quite a while ago. It is in maintenance mode, only security issues and OS incompatibilities are considered.

这是其他方式很简单创建自己的方法来做到这一点：

It is otherwise simple enough to create your own method to do this:

  public static class ExtensionMethods {
    public static void Clear(this Control.ControlCollection controls, bool dispose) {
      for (int ix = controls.Count - 1; ix >= 0; --ix) {
        if (dispose) controls[ix].Dispose();
        else controls.RemoveAt(ix);
      }
    }
  }

现在，你可以这样写：

  panel1.Controls.Clear(true);

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