simplify new expression

src/Shared/HandyControl_Shared/Controls/Cover/CoverFlow/CoverFlow.cs

@@ -69,12 +69,12 @@ namespace HandyControl.Controls
         /// <summary>
         ///     存储所有的内容
         /// </summary>
-        private readonly Dictionary<int, object> _contentDic = new Dictionary<int, object>();
+        private readonly Dictionary<int, object> _contentDic = new();
 
         /// <summary>
         ///     当前在显示范围内的项
         /// </summary>
-        private readonly Dictionary<int, CoverFlowItem> _itemShowDic = new Dictionary<int, CoverFlowItem>();
+        private readonly Dictionary<int, CoverFlowItem> _itemShowDic = new();
 
         /// <summary>
         ///     相机

src/Shared/HandyControl_Shared/Controls/Cover/CoverFlow/CoverFlowItem.cs

@@ -72,12 +72,12 @@ namespace HandyControl.Controls
 
             var textureCoordinates = new PointCollection
             {
-                new Point(0, 1),
-                new Point(1, 1),
-                new Point(1, 0),
-                new Point(0, 0),
-                new Point(1, 0),
-                new Point(1, 1)
+                new(0, 1),
+                new(1, 1),
+                new(1, 0),
+                new(0, 0),
+                new(1, 0),
+                new(1, 1)
             };
 
             var normals = new Vector3DCollection

src/Shared/HandyControl_Shared/Controls/Cover/CoverView/CoverView.cs

@@ -16,7 +16,7 @@ namespace HandyControl.Controls
 
         private IEnumerable _itemsSourceInternal;
 
-        private readonly Dictionary<object, CoverViewItem> _entryDic = new Dictionary<object, CoverViewItem>();
+        private readonly Dictionary<object, CoverViewItem> _entryDic = new();
 
         private bool _isRefresh;