如何检索父控件及其子控件 - Winforms C# 2

发布于 2024-10-03 07:52:05 字数 783 浏览 4 评论 0原文

我想检索表单的控件。要做到这一点：

internal static IEnumerable<Control> EnumereTousControle(Control controleParent)
{
    foreach (Control subControl in controleParent.Controls)
    {
        yield return subControl;

        foreach (Control c in EnumereTousControle(subControl))
            yield return c;
    }
}

它工作正常，父控件的所有子控件都被检索。但我也需要这个方法返回父控件。我尝试了这个，但它不起作用（因为该方法是递归的）：

internal static IEnumerable<Control> EnumereAllControls(Control parentControl)
{
    yield return parentControl; // does not work

    foreach (Control subControl in parentControl.Controls)
    {
        yield return subControl;

        foreach (Control c in EnumereAllControls(subControl))
            yield return c;
    }
}

感谢您的帮助！

原文

I want to retrieve controls of a form. To do this :

internal static IEnumerable<Control> EnumereTousControle(Control controleParent)
{
    foreach (Control subControl in controleParent.Controls)
    {
        yield return subControl;

        foreach (Control c in EnumereTousControle(subControl))
            yield return c;
    }
}

It works fine, all children of the parent control are retrieved. But I need this method returns the parent control too. I tried this but it don't works (because the method is recursive) :

internal static IEnumerable<Control> EnumereAllControls(Control parentControl)
{
    yield return parentControl; // does not work

    foreach (Control subControl in parentControl.Controls)
    {
        yield return subControl;

        foreach (Control c in EnumereAllControls(subControl))
            yield return c;
    }
}

Thanks for your help !

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椒妓 2024-10-10 07:52:05

想想你的一行太多了，试试这个：

internal static IEnumerable<Control> EnumereAllControls(Control parentControl)
{
    yield return parentControl;

    foreach (Control subControl in parentControl.Controls)
    {
        foreach (Control c in EnumereAllControls(subControl))
            yield return c;
    }
}

Thnk you just had one line too many, try this:

internal static IEnumerable<Control> EnumereAllControls(Control parentControl)
{
    yield return parentControl;

    foreach (Control subControl in parentControl.Controls)
    {
        foreach (Control c in EnumereAllControls(subControl))
            yield return c;
    }
}

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笨笨の傻瓜 2024-10-10 07:52:05

    internal static IEnumerable<Control> EnumereTousControle(Control controleParent) {
        yield return controleParent;
        foreach (Control ctl in controleParent.Controls) {
            foreach (Control child in EnumereTousControle(ctl)) 
                yield return child;
        }
    }

好吧，同样的事情减去你得到的额外收益。

    internal static IEnumerable<Control> EnumereTousControle(Control controleParent) {
        yield return controleParent;
        foreach (Control ctl in controleParent.Controls) {
            foreach (Control child in EnumereTousControle(ctl)) 
                yield return child;
        }
    }

Well, same thing minus the extra yield you got.

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