更新

SyminUI/SyminViewTest/DataModel/TreeItemData.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SyminViewTest.DataModel
+{
+    public class TreeItemData
+    {
+        public string Content { get; set; } = "123";
+
+        public List<TreeItemData> Children { get; set; } = new();
+    }
+}