如何连接两个控件集合以与foreach语句一起使用

Question

根据问题,我在表单上有两个面板,一个叫做leftPanel,另一个叫做rightPanel.它们控制我表单上的两列布局.

我还在这些面板中折叠/扩展了组框,我希望迭代每个组以刷新布局,使它们在大小调整更改时互相抢购.

这是我的代码:

    private void RefreshLayout()
    {
        int rollingTopLeft = grpiAddressDetails.Top + grpiAddressDetails.Height + 10;
        int rollingTopRight = grpiBranding.Top + grpiBranding.Height + 10;
        foreach(Control temp in leftPanel.Controls && rightPanel.Controls)
        {
            if (temp is GroupBox)
            {
                if (!(temp.Name.Contains("grpi")))    // Top group boxes have 'i' as the 4th character in their name.
                {
                    if (temp.Parent == leftPanel)
                    {
                        temp.Top = rollingTopLeft;
                        rollingTopLeft += temp.Height + 10;
                    }
                    else if(temp.Parent == rightPanel)
                    {
                        temp.Top = rollingTopRight;
                        rollingTopRight += temp.Height + 10;
                    }
                }
            }
        }
    }

这是我需要加入集合的行:

foreach(Control temp in leftPanel.Controls && rightPanel.Controls)

我意识到&&不起作用,也尝试过Controls.Concat但是Control Collections似乎没有这个功能.希望一切都清楚!

Answer 1

var allControls = leftPanel.Controls.Cast<Control>().Concat(rightPanel.Controls.Cast<Control>());
foreach(Control temp in allControls)
{
     //...
}