添加项目文件。

TodoList/Converters/EnumDescriptionConverter.cs

@@ -0,0 +1,31 @@
+using System;
+using System.ComponentModel;
+using System.Globalization;
+using System.Reflection;
+using System.Windows.Data;
+
+namespace TodoList.Converters
+{
+    public class EnumDescriptionConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value == null) return string.Empty;
+
+            var type = value.GetType();
+            var name = Enum.GetName(type, value);
+            if (name == null) return value.ToString();
+
+            var field = type.GetField(name);
+            if (field == null) return value.ToString();
+
+            var attr = Attribute.GetCustomAttribute(field, typeof(DescriptionAttribute)) as DescriptionAttribute;
+            return attr?.Description ?? value.ToString();
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return value;
+        }
+    }
+}