通过C＃递归通知子控件 [英] Recursively notify child controls via C#

问题描述

我有一个窗体 MainForm ，它是Windows窗体窗体，其中包含许多子控件。我想在 MainForm 上调用一个函数来通知其所有子级。 Windows窗体表单是否提供执行此操作的方法？我玩过更新，刷新和无效播放，没有成功。

I have a form MainForm which is a Windows Forms form that contains many child controls. I want to call one function on MainForm that notifies all of its children. Does the Windows Forms form provide a means to do this? I played with update, refresh and invalidate with no success.

推荐答案

foreach (Control ctrl in this.Controls)
{
    // call whatever you want on ctrl
}

如果要访问表单上的所有控件，以及表单上每个控件上的所有控件（以此类推，以递归方式），请使用如下函数：

If you want access to all controls on the form, and also all the controls on each control on the form (and so on, recursively), use a function like this:

public void DoSomething(Control.ControlCollection controls)
{
    foreach (Control ctrl in controls)
    {
        // do something to ctrl
        MessageBox.Show(ctrl.Name);
        // recurse through all child controls
        DoSomething(ctrl.Controls);
    }
}

...您最初通过传入表单的控件集合，如下所示：

... which you call by initially passing in the form's Controls collection, like this:

DoSomething(this.Controls);

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