diff --git "a/\351\231\210\344\274\237\351\221\253/202241216.md" "b/\351\231\210\344\274\237\351\221\253/202241216.md"
new file mode 100644
index 0000000000000000000000000000000000000000..dacf11d7a00d25f3fb2722787ca72690feabec4a
--- /dev/null
+++ "b/\351\231\210\344\274\237\351\221\253/202241216.md"
@@ -0,0 +1,11 @@
+# 实体模型生成数据库
+1. 安装数据库驱动包`dotnet add package Microsoft.EntityFrameworkCore.Sqlserver`
+2. 创建数据库模型`xxxDbContext`所继承的类`DbContext`
+3. 创建数据库上下文
+4. 配置数据库连接
+5. 执行数据库操作
+6. 数据迁移
+    - 需要一个Design的依赖包；安装命令是：`dotnet add package Microsoft.EntityFrameworkCore.Design`
+    - 需要一个工具包；这个工具是dotnet-ef;全局安装命令是：`dotnet tool install --global dotnet-ef`
+    - 数据迁移命令：`dotnet ef migrations add InitCreate`
+    - 同步迁移文件更新到数据库：`dotnet ef database update
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diff --git "a/\351\231\210\344\274\237\351\221\253/202241218.md" "b/\351\231\210\344\274\237\351\221\253/202241218.md"
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index 0000000000000000000000000000000000000000..7012223047cc14a4b6b5889474d48b9d20462f60
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+++ "b/\351\231\210\344\274\237\351\221\253/202241218.md"
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+1. 搭建一个MVC项目(-o 命名)`dotnet new mvc -o StudentManger`
+2. 在Properties里改端口`5000`
+3. 在Views里的_ViewStart.cshtml改`Layout=null`
+## 在Models里
+1. 按所需的数据表(Student.cs)定义类型
+```js
+namespace StudentManger.Models;
+public class Student
+{
+    public int Id { get; set; }
+    public string SName { get; set; } = null!;
+    public int Age { get; set; }
+    public decimal SHight { get; set; }
+    public string SHobby { get; set; } = null!;
+}
+```
+2. 在而建一个存储每个表的数据库(StudentDbContext.cs)
+```js
+using Microsoft.EntityFrameworkCore;
+namespace StudentManger.Models;
+public class StudentDbContext : DbContext
+{
+    public DbSet<Student> Students { get; set; } = null!;
+}
+```
+3. 在此之前得安装所继承的DbContext
+```js
+//如何安装？？？
+
+- 在该项目之下；安装数据库驱动包；命令是：
+dotnet add package Microsoft.EntityFrameworkCore.Sqlserver
+```
+4. 在StudentDbContext.cs里写配置代码
+```js
+    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+    {
+        //这里调用DbContext类型中的原始OnConfiguring方法：以初始化一些原始配置
+        base.OnConfiguring(optionsBuilder);
+        var conString = $"server=.\\SQLEXPRESS;database=StudentDb;uid=sa;pwd=123456;TrustServerCertificate=true;";
+        optionsBuilder.UseSqlServer(conString);
+    }
+```
+5. 生成迁移文件
+```js
+//如何数据迁移？？？
+-命令是：dotnet ef migrations add 文件名
+    * 前提条件：
+        1. 需要一个Design的依赖包；安装命令是：
+        dotnet add package Microsoft.EntityFrameworkCore.Design
+        2. 需要一个工具包；这个工具是dotnet-ef;全局安装命令是：dotnet tool install --global dotnet-ef
+        3. 程序不能有编译错误；可以使用（dotnet build）命令来排查编译错误
+        4. 程序不能处于运行状态
+- 快捷键`Win+R`打开cmd输入命令`services.msc`选择`SQL Server(SQLEXPRESS)`点击运行数据库===>最后在同步迁移文件到数据库
+（将上一步生成的迁移文件同步到数据库；命令是：dotnet ef database update）
+```
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diff --git "a/\351\231\210\344\274\237\351\221\253/202241220.md" "b/\351\231\210\344\274\237\351\221\253/202241220.md"
new file mode 100644
index 0000000000000000000000000000000000000000..aadc73b6d70d08ce6c0a171a4e4f2ec93c554719
--- /dev/null
+++ "b/\351\231\210\344\274\237\351\221\253/202241220.md"
@@ -0,0 +1,106 @@
+# 新增
+```cs
+@model Baby.Models.Babys;
+<form asp-controller="Babys" asp-action="Create" method="post">
+    <label>标题: <input asp-for="Title" /></label> <br />
+    <label>内容: <input asp-for="Content" /></label><br />
+    <label>作者: <input asp-for="Author" /></label><br />
+    <button type="submit">保存</button>
+</form>
+```
+```cs
+public IActionResult Create()
+    {
+
+        return View();
+    }
+    [HttpPost]
+    public IActionResult Create(Babys input)
+    {
+        var maxId=Db.Babys.Select(t=>t.Id).Max();
+        input.Id=maxId+1;
+        Db.Babys.Add(input);
+        return RedirectToAction("Index");
+    }
+    
+```
+# 编辑
+```cs
+public IActionResult Edit(int id)
+{
+    // 获取id
+    var baby = Db.Babys.FirstOrDefault(x => x.Id == id);
+    return View(baby);
+}
+[HttpPost]
+public IActionResult Edit(Babys input)
+{
+    // 获取Id
+    var blog = Db.Babys.FirstOrDefault(x => x.Id == input.Id);
+
+    if (blog != null)
+    {
+        blog.Title = input.Title;
+        blog.Content = input.Content;
+        blog.Author = input.Author;
+    }
+    return RedirectToAction("Index");
+}
+
+```
+# 删除
+```cs
+public ActionResult Delete(int id)
+{
+    var product = db.Products.Find(id);
+    if (product == null)
+    {
+        return HttpNotFound();
+    }
+    return View(product);
+}
+[HttpPost, ActionName("Delete")]
+[ValidateAntiForgeryToken]
+public ActionResult DeleteConfirmed(int id)
+{
+    var product = db.Products.Find(id);
+    if (product == null)
+    {
+        return HttpNotFound();
+    }
+    db.Products.Remove(product);
+    db.SaveChanges();
+    return RedirectToAction("Index");
+}
+```
+# 查
+```cs
+using System.Linq;
+using System.Web.Mvc;
+using MvcDatabaseConnection.Models;
+
+public class ProductsController : Controller
+{
+    private MyDbContext db = new MyDbContext();
+
+    // 显示产品列表
+    public ActionResult Index()
+    {
+        var products = db.Products.ToList();
+        return View(products);
+    }
+
+    // 显示单个产品详情
+    public ActionResult Details(int id)
+    {
+        var product = db.Products.Find(id);
+        if (product == null)
+        {
+            return HttpNotFound();
+        }
+        return View(product);
+    }
+
+    // 其他动作方法（Create, Edit, Delete）...
+}
+```
\ No newline at end of file
diff --git "a/\351\231\210\344\274\237\351\221\253/1204" "b/\351\231\210\344\274\237\351\221\253/20241204.md"
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rename from "\351\231\210\344\274\237\351\221\253/1204"
rename to "\351\231\210\344\274\237\351\221\253/20241204.md"
diff --git "a/\351\231\210\344\274\237\351\221\253/1209" "b/\351\231\210\344\274\237\351\221\253/20241209.md"
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rename from "\351\231\210\344\274\237\351\221\253/1209"
rename to "\351\231\210\344\274\237\351\221\253/20241209.md"
diff --git "a/\351\231\210\344\274\237\351\221\253/1211" "b/\351\231\210\344\274\237\351\221\253/20241211.md"
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rename from "\351\231\210\344\274\237\351\221\253/1211"
rename to "\351\231\210\344\274\237\351\221\253/20241211.md"
diff --git "a/\351\231\210\344\274\237\351\221\253/1213" "b/\351\231\210\344\274\237\351\221\253/20241213.md"
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rename from "\351\231\210\344\274\237\351\221\253/1213"
rename to "\351\231\210\344\274\237\351\221\253/20241213.md"