添加项目文件。

Sai.Toolkit.Revit/Helpers/VisualAssist.cs

@@ -0,0 +1,51 @@
+using System.Windows;
+using System.Windows.Media;
+
+namespace Sai.Toolkit.Revit.Helpers;
+
+public static class VisualAssist
+{
+	public static T FindVisualParent<T>(FrameworkElement element, string name)
+		where T : FrameworkElement
+	{
+		var parentElement = (FrameworkElement)VisualTreeHelper.GetParent(element);
+		while (parentElement != null)
+		{
+			if (parentElement is T parent)
+			{
+				if (parentElement.Name == name)
+				{
+					return parent;
+				}
+			}
+
+			parentElement = (FrameworkElement)VisualTreeHelper.GetParent(parentElement);
+		}
+
+		return null;
+	}
+
+	public static T FindVisualChild<T>(FrameworkElement element, string name)
+		where T : Visual
+	{
+		for (var i = 0; i < VisualTreeHelper.GetChildrenCount(element); i++)
+		{
+			var childElement = (FrameworkElement)VisualTreeHelper.GetChild(element, i);
+			if (childElement is T child)
+			{
+				if (childElement.Name == name)
+				{
+					return child;
+				}
+			}
+
+			var descendent = FindVisualChild<T>(childElement, name);
+			if (descendent != null)
+			{
+				return descendent;
+			}
+		}
+
+		return null;
+	}
+}