在C#中获取Flowlayoutpanel的所有子级 [英] Getting all children of Flowlayoutpanel in C#

问题描述

我有一个Flowlayoutpanel，孩子的数量未知.我该如何找回所有孩子?到目前为止，我还没有成功尝试过此操作:

I have a Flowlayoutpanel with an unknown amount of children. How can I retrieve all the children? So far I have tried this with no success:

private LoopReturn(Control control)
{    
    var c = control;

    var list = new List<Control>();

    while (c != null)
    {
        list.Add(c);
        c = c.GetNextControl(c, true);                    
    }

    foreach (var control1 in list)
        Debug.Print(control.Name);  
}

但是我只得到前两个孩子.有人知道为什么吗?

But I'm only getting the first two children. Does anybody know why?

我需要所有孩子的所有孩子的孩子，等等.

I need to the children of all children of all children etc.

推荐答案

这是怎么回事:

var controls = flowLayoutPanel.Controls.OfType<Control>();

请记住，这是线性的，不是分层的，就像您当前的算法一样.

Bear in mind that this is linear, not hierarchical, just like you're current algorithm.

要获得所有孩子，无论级别高低，您都需要执行以下操作:

To get the all children, regardless of level, you'd need to do something like this:

private IEnumerable<Control> GetChildren(Control control = null)
{
    if (control == null) control = flowLayoutPanel;

    var list = control.Controls.OfType<Control>().ToList();

    foreach (var child in list)
        list.AddRange(GetChildren(child));

    return list;
}

，然后在需要总体列表时执行以下操作:

and then when you want the overall list just do this:

var controls = GetChildren();

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