todo stage1

MySolution/ToDoApp/Service/DbService.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using ToDoApp.Context;
+
+namespace ToDoApp.Service
+{
+    public class DbService
+    {
+        public static DbService Instance { get; set; } = new DbService();
+
+        public void EnsureCreated()
+        {
+            using (var context = new ToDoContext())
+            {
+                context.Database.EnsureCreated();
+            }
+        }
+    }
+}