.NET6使用SqlSugar操作数据库-编程知识

.NET6使用SqlSugar操作数据库

1.//首先引入SqlSugarCore包
在这里插入图片描述 2.//新建SqlsugarSetup类

 public static class SqlsugarSetup{public static void AddSqlsugarSetup(this IServiceCollection services, IConfiguration configuration,string dbName = "ConnectString"){SqlSugarScope sqlSugar = new SqlSugarScope(new ConnectionConfig(){//如果是mysql，换成SqlSugar.DbType.MySqlDbType = SqlSugar.DbType.SqlServer,ConnectionString = configuration[dbName],IsAutoCloseConnection = true,},db =>{//单例参数配置，所有上下文生效       db.Aop.OnLogExecuting = (sql, pars) =>{Console.WriteLine(sql);//输出sql};});services.AddSingleton<ISqlSugarClient>(sqlSugar);//这边是SqlSugarScope用AddSingleton}}

3.//在appsettings添加连接字符串
在这里插入图片描述

  "ConnectString": "Server=.;Database=db;User=sa;Password=123456;"

4.//在Program注入SqlsugarSetup类

builder.Services.AddSqlsugarSetup(builder.Configuration);

5.//在方法中依赖注入

        private readonly ISqlSugarClient _SqlSugarDB;/// <summary>/// 依赖注入/// </summary>public AnsweringQuestionService(ISqlSugarClient SqlSugarDB){_SqlSugarDB = SqlSugarDB;}

6.使用SqlSugar增删改查

//查询
var a = _SqlSugarDB.Queryable<UserInfo>().ToList();
var b = _SqlSugarDB.Queryable<UserInfo>().Where(a => a.UserID == "1").ToList();
//插入
var res =_SqlSugarDB.Insertable<UserInfo>(new UserInfo() { UserName = "LiuHG", Password = "123456", Role = 1 }).ExecuteCommand();
//更新
var res =_SqlSugarDB.Updateable(new UserInfo() { Id = 1, UserName = "lhg", Role = 2, Password = "123456" }).ExecuteCommand();
//删除
var res =_SqlSugarDB.Deleteable<UserInfo>().Where(it => it.Id == 1).ExecuteCommand();