添加缺失提交的文件

Former-commit-id: 57eb8ecf926da09615745caf037a17cc63ae2100

labs/CameraCard/CameraCard/Data/Entity.cs

@@ -0,0 +1,14 @@
+using System;
+
+namespace CameraCard.Data
+{
+    public abstract class Entity
+    {
+        public Entity()
+        {
+            this.Id = Guid.NewGuid().ToString();
+        }
+
+        public string Id { get; set; }
+    }
+}

labs/CameraCard/CameraCard/Data/MyDbContext.cs

@@ -0,0 +1,28 @@
+using Microsoft.EntityFrameworkCore;
+
+namespace CameraCard.Data
+{
+    public class MyDbContext : DbContext
+    {
+        public DbSet<User> Users { get; set; }
+        public DbSet<Student> Students { get; set; }
+
+        protected override void OnConfiguring(DbContextOptionsBuilder options) => options.UseSqlite("Data Source=data.db;Password=123456;");
+
+        public static void Init()
+        {
+            using (var db = new MyDbContext())
+            {
+                if (db.Database.EnsureCreated())
+                {
+                    db.Seed();
+                }
+            }
+        }
+
+        private void Seed()
+        {
+            this.Users.Add(new User { UserName = "admin", PasswordHash = "123456" });
+        }
+    }
+}

labs/CameraCard/CameraCard/Data/Student.cs

@@ -0,0 +1,13 @@
+using System;
+
+namespace CameraCard.Data
+{
+    public class Student : Entity
+    {
+        public string Name { get; set; }
+        public string IdCardNo { get; set; }
+        public string Image { get; set; }
+        public bool HasUploaded { get; set; }
+        public bool IsChecked { get; set; }
+    }
+}

labs/CameraCard/CameraCard/Data/User.cs

@@ -0,0 +1,8 @@
+namespace CameraCard.Data
+{
+    public class User : Entity
+    {
+        public string UserName { get; set; }
+        public string PasswordHash { get; set; }
+    }
+}

labs/CameraCard/CameraCard/Infrastructure/DllExtern.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Runtime.InteropServices;
+using System.Windows.Forms;
+
+public static class DllExtern
+{
+    [DllImport("user32.dll", SetLastError = true)]
+    private static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);
+
+    public static void FullScreen(this Control control)
+    {
+        SetParent(control.Handle, IntPtr.Zero);
+    }
+}