model

Billing.Shared/Models/Category.cs

@@ -0,0 +1,31 @@
+using System.Xml.Linq;
+
+namespace Billing.Models;
+
+public class Category : BaseModel
+{
+    public int Id { get; set; }
+    public string Name { get; set; }
+    public int? ParentId { get; set; }
+
+    public override void OnXmlDeserialize(XElement node)
+    {
+        Id = Read(node, nameof(Id), 0);
+        Name = Read(node, nameof(Name), string.Empty);
+        var parentId = Read(node, nameof(ParentId), -1);
+        if (parentId >= 0)
+        {
+            ParentId = parentId;
+        }
+    }
+
+    public override void OnXmlSerialize(XElement node)
+    {
+        Write(node, nameof(Id), Id);
+        Write(node, nameof(Name), Name);
+        if (ParentId != null)
+        {
+            Write(node, nameof(ParentId), ParentId.Value);
+        }
+    }
+}