fixed some bugs

src/Shared/HandyControlDemo_Shared/App.xaml.cs

@@ -3,6 +3,7 @@ using System.Diagnostics;
 using System.Diagnostics.CodeAnalysis;
 using System.IO;
 using System.Net;
+using System.Runtime;
 using System.Security.Authentication; 
 using System.Threading;
 using System.Windows;
@@ -21,6 +22,19 @@ namespace HandyControlDemo
         private static Mutex AppMutex;
 #pragma warning restore IDE0052
 
+        public App()
+        {
+#if !netle40
+            var cachePath = $"{AppDomain.CurrentDomain.BaseDirectory}Cache";
+            if (!Directory.Exists(cachePath))
+            {
+                Directory.CreateDirectory(cachePath);
+            }
+            ProfileOptimization.SetProfileRoot(cachePath);
+            ProfileOptimization.StartProfile("Profile");
+#endif
+        }
+
         protected override void OnStartup(StartupEventArgs e)
         {
             AppMutex = new Mutex(true, "HandyControlDemo", out var createdNew);