use sdk project

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

@@ -1,7 +1,7 @@
 using System;
 using System.ComponentModel;
 using System.Globalization;
-#if !netle40
+#if !NET40
 using System.Runtime.CompilerServices;
 #endif
 using System.Windows;
@@ -76,7 +76,7 @@ namespace HandyControl.Tools
 
         public event PropertyChangedEventHandler PropertyChanged;
 
-#if netle40
+#if NET40
         protected virtual void OnPropertyChanged(string propertyName)
         {
             PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));

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

@@ -134,7 +134,7 @@ namespace HandyControl.Tools
             {
                 InteropValues.APPBARDATA appBarData = default;
                 var autoHide = InteropMethods.SHAppBarMessage(4, ref appBarData) != 0;
-#if netle40
+#if NET40
                 return WindowResizeBorderThickness.Add(new Thickness(autoHide ? -8 : 0));
 #elif Core
                 var hdc = InteropMethods.GetDC(IntPtr.Zero);