添加项目文件。

Converters/InverseBoolConverter.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Globalization;
+using System.Windows.Data;
+
+namespace HME_MoistureLossMeter.Converters
+{
+    public class InverseBoolConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value is bool b) return !b;
+            return true;
+        }
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value is bool b) return !b;
+            return false;
+        }
+    }
+}