查找所有子控件WPF [英] Finding ALL child controls WPF
本文介绍了查找所有子控件WPF的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想找到一个WPF控件内的所有控件。我有看很多的样品,似乎他们都要么需要一个名称作为参数传递或者干脆不工作。
I would like to find all of the controls within a WPF control. I have had a look at a lot of samples and it seems that they all either require a Name to be passed as parameter or simply do not work.
我有现有的code,但它不能正常工作:
I have existing code but it isn't working properly:
public static IEnumerable<T> FindVisualChildren<T>(DependencyObject depObj) where T : DependencyObject
{
if (depObj != null)
{
for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
{
DependencyObject child = VisualTreeHelper.GetChild(depObj, i);
if (child != null && child is T)
{
yield return (T)child;
}
foreach (T childOfChild in FindVisualChildren<T>(child))
{
yield return childOfChild;
}
}
}
}
例如,它不会得到一个的DataGrid
中的 TabItem的
。
有什么建议?
推荐答案
您可以使用这些。
public static List<T> GetLogicalChildCollection<T>(object parent) where T : DependencyObject
{
List<T> logicalCollection = new List<T>();
GetLogicalChildCollection(parent as DependencyObject, logicalCollection);
return logicalCollection;
}
private static void GetLogicalChildCollection<T>(DependencyObject parent, List<T> logicalCollection) where T : DependencyObject
{
IEnumerable children = LogicalTreeHelper.GetChildren(parent);
foreach (object child in children)
{
if (child is DependencyObject)
{
DependencyObject depChild = child as DependencyObject;
if (child is T)
{
logicalCollection.Add(child as T);
}
GetLogicalChildCollection(depChild, logicalCollection);
}
}
}
您可以得到RootGrid子按钮控件f.e这样的:
You can get child button controls in RootGrid f.e like that:
List<Button> button = GetLogicalChildCollection<Button>(RootGrid);
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