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This article introduces the "C#how to use ASP.NET Core to develop student management system" knowledge, in the actual case of the operation process, many people will encounter such a dilemma, then let Xiaobian lead you to learn how to deal with these situations! I hope you can read carefully and learn something!

Knowledge points involved

Develop a student management system involving knowledge points as follows:

Development Tools: Visual Studio 2019

Goal framework: . Net 5.0

Architecture: MVC three-tier architecture [Model-View-Controller]

create a project

File--> New--> Project-->ASP.NET Core Web App (Model-View-Controller), as follows:

Then click Next to enter the new project configuration page, enter the project name [SMS=Student Management System] and save location, and then click Next, as shown below:

选择其他信息【目标框架选择.NET 5.0】，然后点击创建，如下所示：

通过默认创建的项目，如下所示：

登录模块1. 创建控制器--LoginController

在Controllers文件夹-->右键添加-->控制器，如下所示：

打开创建视图控制器窗口，选择MVC控制器-空，然后点击添加。 如下所示：

弹出添加新项窗口，选择MVC控制器-空，输入控制器名称，点击创建即可，如下所示：

控制器代码如下所示：

namespace SMS.Controllers{ public class LoginController : Controller { private DataContext dataContext; public LoginController(DataContext context) { dataContext = context; } [HttpGet] public IActionResult Index() { return View(); } [HttpPost] public IActionResult Login(User user) { if (string.IsNullOrEmpty(user.UserName) || string.IsNullOrEmpty(user.Password)) { ViewBag.Msg = "用户名或密码为空"; return View("Index", user); } else { var item = dataContext.Users.FirstOrDefault(i=>i.UserName==user.UserName && i.Password == user.Password); if (item != null) { HttpContext.Session.SetInt32("UserId",item.Id); return Redirect("/Home"); } else { ViewBag.Msg = "用户名或密码验证错误"; return View("Index", user); } } } }}2. 创建登录视图

在Views文件夹下新增Login文件夹，然后新增视图【Index.cshtml】，如下所示：

然后选择空视图，如下所示：

输入视图名称【Index.cshtml】，点击添加即可，如下所示：

登录页面，添加如下代码，如下所示：

学生管理系统 学生管理系统 Username: Password: 记住密码

@ViewBag.Msg

© 2021 学生管理系统. All Rights Reserved | Design by 小六公子

3. 创建用户模型

在Models文件夹下，右键添加类，如下所示：

输入模型名称【User】，点击添加即可，如下所示：

用户模型User，如下所示：

namespace SMS.Models{ public class User { /// /// 用户唯一标识 /// public int Id { get; set; } /// /// 登录账号 /// public string UserName { get; set; } /// /// 密码 /// public string Password { get; set; } /// /// 显示名称 /// public string NickName { get; set; } }}4. 创建数据库操作DataContext

数据库操作采用EntityFrameCore框架，继承自DbContext，如下所示：

namespace SMS.Models{ public class DataContext:DbContext { public DbSet Users { get; set; } public DataContext(DbContextOptions options) : base(options) { } }}5. 创建数据库和表并构造数据

创建数据库和表并构造数据，如下所示：

6. 添加数据库连接配置

连接数据库，需要在配置文件appsettings.json中，添加数据库连接字符串，如下所示：

{ "Logging": { "LogLevel": { "Default": "Information", "Microsoft": "Warning", "Microsoft.Hosting.Lifetime": "Information" } }, "ConnectionStrings": { "Default": "Server=localhost;Database=SMS;Trusted_Connection=True;User Id=sa;Password=abc123" }, "AllowedHosts": "*"}7. 添加注入信息

在Startup.cs中，添加EntittyFramework的注入，如下所示：

namespace SMS{ public class Startup { public Startup(IConfiguration configuration) { Configuration = configuration; } public IConfiguration Configuration { get; } // This method gets called by the runtime. Use this method to add services to the container. public void ConfigureServices(IServiceCollection services) { services.AddControllersWithViews(); //数据库EntityFrameworkCore注入 services.AddDbContext(options=>options.UseSqlServer(Configuration.GetConnectionString("Default"))); services.AddHttpContextAccessor(); services.AddSession();//配置session访问服务 } // This method gets called by the runtime. Use this method to configure the HTTP request pipeline. public void Configure(IApplicationBuilder app, IWebHostEnvironment env) { if (env.IsDevelopment()) { app.UseDeveloperExceptionPage(); } else { app.UseExceptionHandler("/Home/Error"); // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts. app.UseHsts(); } app.UseHttpsRedirection(); app.UseStaticFiles(); app.UseRouting(); app.UseSession();//需是注入session app.UseAuthorization(); app.UseEndpoints(endpoints => { endpoints.MapControllerRoute( name: "default", pattern: "{controller=Home}/{action=Index}/{id?}"); }); } }}8. 运行测试

经过以上步骤，登录功能已经做好，运行程序。然后数据账号密码，点击登录进行跳转，如下所示：

"C#怎么用ASP.NET Core开发学生管理系统"的内容就介绍到这里了，感谢大家的阅读。如果想了解更多行业相关的知识可以关注网站，小编将为大家输出更多高质量的实用文章!

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