c# - 如何根据名称删除标签/按钮？ WPF Visual Studio 2015

Question

我正在尝试根据名称删除标签和按钮，但不幸的是，删除它们的选项(据我所知)是通过 Children.Remove 它只接受实际标签/按钮本身而不是它们的名称.我需要名称，因为它决定了哪个 X 按钮属于谁。

Label labels;
Button buttons;
int counter;

private void button_Copy_Click(object sender, RoutedEventArgs e)
    {
        counter++;

        Label lbl = new Label();
        lbl.Content = counter.ToString();
        lbl.HorizontalAlignment = HorizontalAlignment.Center;
        lbl.VerticalAlignment = VerticalAlignment.Center;
        lbl.FontSize = 50;
        lbl.Name = "lbl" + counter;
        labels = lbl;

        Button bt = new Button();
        bt.Content = "X";
        bt.HorizontalAlignment = HorizontalAlignment.Right;
        bt.VerticalAlignment = VerticalAlignment.Top;
        bt.Name = "btn" + counter;
        buttons = bt;

        bt.Click += Button_Click;

        grid.Children.Add(lbl);
        grid.Children.Add(bt);
    }

    private void Button_Click(object sender, EventArgs e)
    {
        grid.Children.Remove(labels.Name = "btn" + counter);
        grid.Children.Remove(buttons);
    }

grid.Children.Remove(labels.Name = "btn"+ counter);是不正确的，但希望它能告诉我我希望它如何发生。

Answer 1

您可以先使用 LINQ Where 表达式获取子元素:

var child = grid.Children.OfType<Control>().Where(x => x.Name == "btn" + counter).First();

然后调用删除:

grid.Children.Remove(child);