Synchronize the Net40

HandyControl/Controls/Other/GotoTop.cs

@@ -37,7 +37,7 @@ namespace HandyControl.Controls
 
                 if (_scrollViewer is ScrollViewer scrollViewerHandy && Animated && scrollViewerHandy.IsEnableInertia)
                 {
-                    _gotoTopAction = () => scrollViewerHandy.ScrollToVerticalOffsetInternal(0, AnimationTime);
+                    _gotoTopAction = () => scrollViewerHandy.ScrollToTopInternal(AnimationTime);
                 }
                 else
                 {

HandyControl/Controls/Other/ScrollViewer.cs

@@ -90,6 +90,16 @@ namespace HandyControl.Controls
             }
         }
 
+        internal void ScrollToTopInternal(double milliseconds = 500)
+        {
+            if (!_isRunning)
+            {
+                _totalVerticalOffset = VerticalOffset;
+                CurrentVerticalOffset = VerticalOffset;
+            }
+            ScrollToVerticalOffsetInternal(0, milliseconds);
+        }
+
         internal void ScrollToVerticalOffsetInternal(double offset, double milliseconds = 500)
         {
             var animation = AnimationHelper.CreateAnimation(offset, milliseconds);

HandyControl/Tools/Helper/VisualHelper.cs

@@ -1,6 +1,5 @@
 using System.Linq;
 using System.Windows;
-using System.Windows.Controls;
 using System.Windows.Media;
 
 namespace HandyControl.Tools