添加项目文件。

TodoList/Views/QuickEntryWindow.xaml.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Windows;
+using TodoList.Services;
+using TodoList.ViewModels;
+
+namespace TodoList.Views
+{
+    public partial class QuickEntryWindow : Window
+    {
+        public QuickEntryWindow(IDataService dataService)
+        {
+            InitializeComponent();
+            DataContext = new QuickEntryViewModel(dataService, () => this.Hide());
+        }
+
+        protected override void OnActivated(EventArgs e)
+        {
+            base.OnActivated(e);
+            InputBox.Focus();
+            InputBox.SelectAll();
+        }
+    }
+}