使用Rider创建Asp.net core+mysql

1.创建项目

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2.添加依赖项

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3.添加数据库字符串

在appsetting.json中添加数据库信息

"DefaultDbConnect": "server=localhost;database=demo;user=root;password=123456"

数据库名称为demo，创建一个user表

CREATE TABLE `user` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `username` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;

INSERT INTO `demo`.`user`(`username`) VALUES ('rookie')

4.

在Model中创建一个ApplicationDbContext.cs和User.cs

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using Microsoft.EntityFrameworkCore;

namespace ConnectMySQLDemo.Models
{
    public class ApplicationDbContext:DbContext
    {
        public ApplicationDbContext(DbContextOptions options) : base(options)
        {
        }
        
        public DbSet user{ get; set; }
    }
}

namespace ConnectMySQLDemo.Models
{
    public class User
    {
        public int Id { get; set; }
        public string username { get; set; }
    }
}

5.在Startup中配置mysql

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// Mysql
IConfigurationSection configurationSection = Configuration.GetSection("DefaultDbConnect");
services.AddDbContext(options => options.UseMySql(configurationSection.Value));

6.在Controller中测试

在HomeController中查询，然后在index.cshtml中显示

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HomeController.cs代码如下

private ApplicationDbContext _db;

public HomeController(ApplicationDbContext db)
{
    _db = db;
}
public IActionResult Index()
{
    var item = _db.user.FirstOrDefault(u => u.Id == 1);
    return View(item);
}

index.html代码如下

@model User
@{
    ViewData["Title"] = "Home Page";
}

@Model.Id
@Model.username

7.运行

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完成