更新

AntdWpf/Converters/DoubleToCornerRadiusConverter.cs

@@ -0,0 +1,48 @@
+namespace AntdWpf.Converters
+{
+    using System;
+    using System.Globalization;
+    using System.Windows;
+    using System.Windows.Data;
+    using System.Windows.Markup;
+
+    [ValueConversion(typeof(double), typeof(CornerRadius))]
+    public class DoubleToCornerRadiusConverter : MarkupExtension, IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (!(value is double))
+            {
+                return default(CornerRadius);
+            }
+
+            var d = (double)value;
+
+            if (double.IsNaN(d) || d < 1)
+            {
+                d = 0;
+            } else
+            {
+                // May require 50% rounded corners
+                double.TryParse(parameter as string, out double val);
+
+                if (val > 0)
+                {
+                    d /= val;
+                }
+            }
+   
+            return new CornerRadius(d);
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return DependencyProperty.UnsetValue;
+        }
+
+        public override object ProvideValue(IServiceProvider serviceProvider)
+        {
+            return this;
+        }
+    }
+}