添加项目文件。

UIShare/Converters/BooleanToVisibilityConverter.cs

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+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Data;
+
+namespace UIShare.Converters
+{
+    public class BooleanToVisibilityConverter : IValueConverter
+    {
+        // 同时接受 "invert" / "inverse" / "inverted" / "reverse"（大小写不敏感）作为反转参数，
+        // 避免因 XAML 处用了 ConverterParameter=Inverse 而静默失效。
+        private static bool IsInvert(object parameter)
+        {
+            var s = parameter?.ToString()?.ToLowerInvariant();
+            return s == "invert" || s == "inverse" || s == "inverted" || s == "reverse";
+        }
+
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            bool input = value is bool b && b;
+            if (IsInvert(parameter))
+                input = !input;
+
+            return input ? Visibility.Visible : Visibility.Collapsed;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            bool output = value is Visibility v && v == Visibility.Visible;
+            if (IsInvert(parameter))
+                output = !output;
+
+            return output;
+        }
+    }
+}