更新

WPFDark/Controls/BiaProgressPanel.xaml.cs

@@ -0,0 +1,14 @@
+using System.Windows;
+using System.Windows.Controls;
+
+namespace WPFDark.Controls
+{
+    public class BiaProgressPanel : Control
+    {
+        static BiaProgressPanel()
+        {
+            DefaultStyleKeyProperty.OverrideMetadata(typeof(BiaProgressPanel),
+                new FrameworkPropertyMetadata(typeof(BiaProgressPanel)));
+        }
+    }
+}