Replace Dispose with Lambda

1. Faster
2. Fix #361

Wox/App.xaml.cs

@@ -29,7 +29,7 @@ namespace Wox
 
         protected override void OnStartup(StartupEventArgs e)
         {
-            using (new Timeit("Startup Time"))
+            Timeit.StopwatchDebug("Startup Time", () =>
             {
                 base.OnStartup(e);
                 DispatcherUnhandledException += ErrorReporting.DispatcherUnhandledException;
@@ -39,7 +39,7 @@ namespace Wox
                 Window = new MainWindow();
                 PluginManager.Init(Window);
                 CommandArgsFactory.Execute(e.Args.ToList());
-            }
+            });
 
         }
 

Wox/ImageLoader/ImageLoader.cs

@@ -48,7 +48,7 @@ namespace Wox.ImageLoader
                         new Int32Rect(0, 0, icon.Width, icon.Height), BitmapSizeOptions.FromEmptyOptions());
                 }
             }
-            catch{}
+            catch { }
 
             return null;
         }
@@ -57,7 +57,7 @@ namespace Wox.ImageLoader
         {
             //ImageCacheStroage.Instance.TopUsedImages can be changed during foreach, so we need to make a copy
             var imageList = new Dictionary<string, int>(ImageCacheStroage.Instance.TopUsedImages);
-            using (new Timeit(string.Format("Preload {0} images", imageList.Count)))
+            Timeit.StopwatchDebug($"Preload {imageList.Count} images", () =>
             {
                 foreach (var image in imageList)
                 {
@@ -75,20 +75,22 @@ namespace Wox.ImageLoader
                         }
                     }
                 }
-            }
+            });
         }
 
         public static ImageSource Load(string path, bool addToCache = true)
         {
-            using (new Timeit($"Loading image path: {path}"))
+            if (string.IsNullOrEmpty(path)) return null;
+            ImageSource img = null;
+            Timeit.StopwatchDebug($"Loading image path: {path}", () =>
             {
-                if (string.IsNullOrEmpty(path)) return null;
+
                 if (addToCache)
                 {
                     ImageCacheStroage.Instance.Add(path);
                 }
 
-                ImageSource img = null;
+
                 if (imageCache.ContainsKey(path))
                 {
                     img = imageCache[path];
@@ -119,8 +121,8 @@ namespace Wox.ImageLoader
                         }
                     }
                 }
-                return img;
-            }
+            });
+            return img;
         }
 
         // http://blogs.msdn.com/b/oldnewthing/archive/2011/01/27/10120844.aspx

Wox/SettingWindow.xaml.cs

@@ -329,10 +329,10 @@ namespace Wox
 
         private void OnThemeTabSelected()
         {
-            using (new Timeit("theme load"))
+            Timeit.StopwatchDebug("theme load", () =>
             {
                 var s = Fonts.SystemFontFamilies;
-            }
+            });
 
             if (themeTabLoaded) return;