--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MetroWpf/MetroWpf.Xaml/Converters/PercentToAngleConverter.cs	Mon Mar 12 23:05:21 2012 +0800
@@ -0,0 +1,28 @@
+using System;
+using System.Globalization;
+using System.Windows;
+using System.Windows.Data;
+
+namespace MetroWpf.Xaml.Converters
+{
+    public sealed class PercentToAngleConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (!(value is double))
+            {
+                return DependencyProperty.UnsetValue;
+            }
+            return (double)value * 360.0;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (!(value is double))
+            {
+                return DependencyProperty.UnsetValue;
+            }
+            return (double)value * (1.0 / 360.0);
+        }
+    }
+} ;
\ No newline at end of file