C# 从WPF中的用户控件获取面板

我的主要观点是：

<Window ...>
        <WrapPanel Name="Container" Height="500" Width="1024" VerticalAlignment="Center">
        <WrapPanel>
            <local:RequestListView />

        </WrapPanel>
    </StackPanel>
</Window>

---

但是返回null。就我所见，他不能“看”控制装置内部。如何获取这两个面板？

这是可以帮助您的Helper类

UIHelper.cs

public static class UIHelper
{        
    public static DependencyObject FindChild(DependencyObject parent, string name)
    {
        // confirm parent and name are valid.
        if (parent == null || string.IsNullOrEmpty(name)) return null;

        if (parent is FrameworkElement && (parent as FrameworkElement).Name == name) return parent;

        DependencyObject result = null;

        if (parent is FrameworkElement) (parent as FrameworkElement).ApplyTemplate();

        int childrenCount = VisualTreeHelper.GetChildrenCount(parent);
        for (int i = 0; i < childrenCount; i++)
        {
            var child = VisualTreeHelper.GetChild(parent, i);
            result = FindChild(child, name);
            if (result != null) break;
        }

        return result;
    }
}

StackPanel foundStackPanel = (StackPanel) UIHelper.FindChild(Application.Current.MainWindow, "RightContainer");

参考资料：

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我希望这对您有所帮助：）

因此，您正在尝试访问

StackPanel

内部的

RequestFormViewModel

。你想用什么来达到目的？在WPF中，视图模型永远不应该直接访问视图，而应该将视图的属性公开给用户display@Gopichandar这一评论很有帮助。你是最棒的：）@Boo我正在用代码构建表单。也许我应该在xaml.cs类中这样做。你是这么说的吗？不！使用xaml构建表单（通常表单主要是静态的，如果是动态的，我们将在第二时间看到），然后，需要显示/编辑的属性必须绑定到viewModel

public static class UIHelper
{        
    public static DependencyObject FindChild(DependencyObject parent, string name)
    {
        // confirm parent and name are valid.
        if (parent == null || string.IsNullOrEmpty(name)) return null;

        if (parent is FrameworkElement && (parent as FrameworkElement).Name == name) return parent;

        DependencyObject result = null;

        if (parent is FrameworkElement) (parent as FrameworkElement).ApplyTemplate();

        int childrenCount = VisualTreeHelper.GetChildrenCount(parent);
        for (int i = 0; i < childrenCount; i++)
        {
            var child = VisualTreeHelper.GetChild(parent, i);
            result = FindChild(child, name);
            if (result != null) break;
        }

        return result;
    }
}

StackPanel foundStackPanel = (StackPanel) UIHelper.FindChild(Application.Current.MainWindow, "RightContainer");