optimized demo start-up speed

src/Shared/HandyControlDemo_Shared/MainWindow.xaml.cs

@@ -1,25 +1,38 @@
 using System;
+using System.Collections.Generic;
 using System.ComponentModel;
+using System.Windows.Input;
 using GalaSoft.MvvmLight.Messaging;
 using HandyControl.Controls;
 using HandyControl.Tools;
 using HandyControlDemo.Data;
 using HandyControlDemo.Tools;
+using HandyControlDemo.UserControl;
+using HandyControlDemo.ViewModel;
 
 namespace HandyControlDemo
 {
     public partial class MainWindow
     {
-        public MainWindow()
-        {
-            InitializeComponent();
-        }
+        public MainWindow() => InitializeComponent();
 
-        protected override void OnInitialized(EventArgs e)
+        protected override void OnContentRendered(EventArgs e)
         {
-            base.OnInitialized(e);
+            base.OnContentRendered(e);
+
+            DataContext = ViewModelLocator.Instance.Main;
+            NonClientAreaContent = new NoUserContent();
+            ControlMain.Content = new MainWindowContent();
+
+            GlobalShortcut.Init(new List<KeyBinding>
+            {
+                new KeyBinding(ViewModelLocator.Instance.Main.GlobalShortcutInfoCmd, Key.I, ModifierKeys.Control | ModifierKeys.Alt),
+                new KeyBinding(ViewModelLocator.Instance.Main.GlobalShortcutWarningCmd, Key.E, ModifierKeys.Control | ModifierKeys.Alt)
+            });
+
+            Dialog.SetToken(this, MessageToken.MainWindow);
+            WindowAttach.SetIgnoreAltF4(this, true);
 
-            ConfigHelper.Instance.SetSystemVersionInfo(CommonHelper.GetSystemVersionInfo());
             Messenger.Default.Send(true, MessageToken.FullSwitch);
             Messenger.Default.Send(AssemblyHelper.CreateInternalInstance($"UserControl.{MessageToken.PracticalDemo}"), MessageToken.LoadShowContent);
         }