具有水平布局的 ListView 并从后面的代码换行

Question

我被迫使用来自代码隐藏的 ListView/listbox。在那我必须设置边界。我希望他们在需要时换行

ListView lsv = new ListView
{
    Width = 400,
    Height = 200,
    Background = Brushes.LimeGreen,
};
grdMain.Children.Add(lsv);

for (int iii = 0; iii < 15; iii++)
{
    Border b = new Border() { BorderThickness = new Thickness(3),
    BorderBrush = new SolidColorBrush(Colors.Blue), Width = 50, Height = 50     
};
lsv.Items.Add(b);
lsv.ItemsPanel = (ItemsPanelTemplate)XamlReader.Parse("<ItemsPanelTemplate xmlns=\"http://schemas.microsoft.com/winfx/2006/xaml/presentation\"><WrapPanel Orientation=\"Horizontal\" HorizontalAlignment=\"Stretch\"/></ItemsPanelTemplate>");

现在效果如下：

相反，如果我放置固定宽度 Width=\"300\"

lsv.ItemsPanel = (ItemsPanelTemplate)XamlReader.Parse("<ItemsPanelTemplate xmlns=\"http://schemas.microsoft.com/winfx/2006/xaml/presentation\"><WrapPanel Orientation=\"Horizontal\" Width=\"300\"/></ItemsPanelTemplate>");

它工作正常

问题是我无法为环绕面板设置固定宽度，我希望它扩展以填充其父项。

提前致谢帕特里克

Answer 1

您可以尝试执行以下操作...

ListView listView = new ListView();
var scrollViewer = Utils.GetDescendantByType(listView, typeof(ScrollViewer)) as ScrollViewer;
scrollViewer.HorizontalScrollBarVisibility = ScrollBarVisibility.Disabled;

哪里会有辅助方法

public static class Utils
{
    public static Visual GetDescendantByType(Visual element, Type type)
    {
        if (element == null)
            return null;

        if (element.GetType() == type)
            return element;

        Visual foundElement = null;
        if (element is FrameworkElement)
            (element as FrameworkElement).ApplyTemplate();

        for (int i = 0; i < VisualTreeHelper.GetChildrenCount(element); i++)
        {
            Visual visual = VisualTreeHelper.GetChild(element, i) as Visual;
            foundElement = GetDescendantByType(visual, type);
            if (foundElement != null)
                break;
        }
        return foundElement;
    }
}

注意，我已经在 phone.

上编译了这段代码

具有水平布局的 ListView 并从后面的代码换行

ListView with horizontal layout and wrap from code behind

c#

wpf

listview

wrappanel

itemspanel