completed the branch

src/Shared/HandyControl_Shared/Tools/Helper/ArithmeticHelper.cs

@@ -36,9 +36,9 @@ namespace HandyControl.Tools
         /// <summary>
         ///     计算控件在窗口中的可见坐标
         /// </summary>
-        public static Point CalSafePoint(FrameworkElement element, FrameworkElement showElement, Thickness thickness = default(Thickness))
+        public static Point CalSafePoint(FrameworkElement element, FrameworkElement showElement, Thickness thickness = default)
         {
-            if (element == null || showElement == null) return default(Point);
+            if (element == null || showElement == null) return default;
             var point = element.PointToScreen(new Point(0, 0));
 
             if (point.X < 0) point.X = 0;
@@ -122,19 +122,6 @@ namespace HandyControl.Tools
         /// <returns></returns>
         public static double CalAngle(Point center, Point p) => Math.Atan2(p.Y - center.Y, p.X - center.X) * 180 / Math.PI;
 
-        /// <summary>
-        ///     判断是否是有效的双精度浮点数
-        /// </summary>
-        /// <param name="value"></param>
-        /// <returns></returns>
-        public static bool IsValidDoubleValue(object value)
-        {
-            var d = (double)value;
-            if (!double.IsNaN(d))
-                return !double.IsInfinity(d);
-            return false;
-        }
-
         /// <summary>
         ///     计算法线
         /// </summary>

src/Shared/HandyControl_Shared/Tools/Helper/ValidateHelper.cs

@@ -20,24 +20,88 @@
         ///     是否在正浮点数范围内
         /// </summary>
         /// <param name="value"></param>
-        /// <param name="includeZero"></param>
         /// <returns></returns>
-        public static bool IsInRangeOfPosDouble(object value, bool includeZero = false)
+        public static bool IsInRangeOfPosDouble(object value)
         {
             var v = (double)value;
-            return !(double.IsNaN(v) || double.IsInfinity(v)) && (includeZero ? v >= 0 : v > 0);
+            return !(double.IsNaN(v) || double.IsInfinity(v)) && v > 0;
+        }
+
+        /// <summary>
+        ///     是否在正浮点数范围内（包括0）
+        /// </summary>
+        /// <param name="value"></param>
+        /// <returns></returns>
+        public static bool IsInRangeOfPosDoubleIncludeZero(object value)
+        {
+            var v = (double)value;
+            return !(double.IsNaN(v) || double.IsInfinity(v)) && v >= 0;
         }
 
         /// <summary>
         ///     是否在负浮点数范围内
         /// </summary>
         /// <param name="value"></param>
-        /// <param name="includeZero"></param>
         /// <returns></returns>
-        public static bool IsInRangeOfNegDouble(object value, bool includeZero = false)
+        public static bool IsInRangeOfNegDouble(object value)
         {
             var v = (double)value;
-            return !(double.IsNaN(v) || double.IsInfinity(v)) && (includeZero ? v <= 0 : v < 0);
+            return !(double.IsNaN(v) || double.IsInfinity(v)) && v < 0;
+        }
+
+        /// <summary>
+        ///     是否在负浮点数范围内（包括0）
+        /// </summary>
+        /// <param name="value"></param>
+        /// <returns></returns>
+        public static bool IsInRangeOfNegDoubleIncludeZero(object value)
+        {
+            var v = (double)value;
+            return !(double.IsNaN(v) || double.IsInfinity(v)) && v <= 0;
+        }
+
+        /// <summary>
+        ///     是否在正整数范围内
+        /// </summary>
+        /// <param name="value"></param>
+        /// <returns></returns>
+        public static bool IsInRangeOfPosInt(object value)
+        {
+            var v = (int)value;
+            return v > 0;
+        }
+
+        /// <summary>
+        ///     是否在正整数范围内（包括0）
+        /// </summary>
+        /// <param name="value"></param>
+        /// <returns></returns>
+        public static bool IsInRangeOfPosIntIncludeZero(object value)
+        {
+            var v = (int)value;
+            return v >= 0;
+        }
+
+        /// <summary>
+        ///     是否在负整数范围内
+        /// </summary>
+        /// <param name="value"></param>
+        /// <returns></returns>
+        public static bool IsInRangeOfNegInt(object value)
+        {
+            var v = (int)value;
+            return v < 0;
+        }
+
+        /// <summary>
+        ///     是否在负整数范围内（包括0）
+        /// </summary>
+        /// <param name="value"></param>
+        /// <returns></returns>
+        public static bool IsInRangeOfNegIntIncludeZero(object value)
+        {
+            var v = (int)value;
+            return v <= 0;
         }
     }
 }

src/Shared/HandyControl_Shared/Tools/Helper/VisualHelper.cs

@@ -42,7 +42,7 @@ namespace HandyControl.Tools
                 if (result != null) return result;
             }
 
-            return default(T);
+            return default;
         }
 
         /// <summary>