更新

AntdWpf/Controls/ThumbContentControlDragCompletedEventArgs.cs

@@ -0,0 +1,13 @@
+namespace AntdWpf.Controls
+{
+    using System.Windows.Controls.Primitives;
+
+    public class ThumbContentControlDragCompletedEventArgs : DragCompletedEventArgs
+    {
+        public ThumbContentControlDragCompletedEventArgs(double horizontalOffset, double verticalOffset, bool canceled)
+            : base(horizontalOffset, verticalOffset, canceled)
+        {
+            this.RoutedEvent = ThumbContentControl.DragCompletedEvent;
+        }
+    }
+}