wpf 按名称查找控制的父级
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Find Parent of Control by Name
提问by user2025830
Is there a way to find the parents of a WPF control by its name, when the name is set in the xaml code?
当名称在 xaml 代码中设置时，是否可以通过名称查找 WPF 控件的父级？
回答by Arun Selva Kumar
Try this,
尝试这个，
element = VisualTreeHelper.GetParent(element) as UIElement;
Where, element being the Children - Whose Parent you need to get.
哪里，元素是孩子 - 你需要得到谁的父母。
回答by Marc
In code, you can use the VisualTreeHelperto walk through the visual tree of a control. You can identify the control by its name from codebehind as usual.
在代码中，您可以使用VisualTreeHelper遍历控件的可视化树。您可以像往常一样通过代码隐藏中的名称识别控件。
If you want to use it from XAML directly, I would try implementing a custom 'value converter', which you could implement to find a parent control which meets your requirements, for example has a certain type.
如果你想直接从 XAML 使用它，我会尝试实现一个自定义的“值转换器”，你可以实现它来找到满足你要求的父控件，例如具有某种类型。
If you don't want to use a value converter, because it is not a 'real' conversion operation, you could implement a 'ParentSearcher' class as a dependency object, that provides dependency properties for the 'input control', your search predicate and the output control(s) and use this in XAML.
如果您不想使用值转换器，因为它不是“真正的”转换操作，您可以实现一个“ParentSearcher”类作为依赖对象，它为“输入控件”提供依赖属性，您的搜索谓词和输出控件并在 XAML 中使用它。
Does this help?
这有帮助吗？
回答by ScottyMacDev
Actually I was able to do this by recursively looking for the Parent control by name and type using the VisualTreeHelper.
实际上，我能够通过使用VisualTreeHelper按名称和类型递归查找父控件来做到这一点。
/// <summary>
/// Recursively finds the specified named parent in a control hierarchy
/// </summary>
/// <typeparam name="T">The type of the targeted Find</typeparam>
/// <param name="child">The child control to start with</param>
/// <param name="parentName">The name of the parent to find</param>
/// <returns></returns>
private static T FindParent<T>(DependencyObject child, string parentName)
where T : DependencyObject
{
if (child == null) return null;
T foundParent = null;
var currentParent = VisualTreeHelper.GetParent(child);
do
{
var frameworkElement = currentParent as FrameworkElement;
if(frameworkElement.Name == parentName && frameworkElement is T)
{
foundParent = (T) currentParent;
break;
}
currentParent = VisualTreeHelper.GetParent(currentParent);
} while (currentParent != null);
return foundParent;
}
