更新

AntdWpf/Converters/IsEmptyConverter.cs

@@ -0,0 +1,21 @@
+namespace AntdWpf.Converters
+{
+    using System;
+    using System.Globalization;
+    using System.Windows;
+    using System.Windows.Data;
+
+    [ValueConversion(typeof(string), typeof(bool))]
+    public class IsEmptyConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return string.IsNullOrEmpty(value as string);
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return DependencyProperty.UnsetValue;
+        }
+    }
+}