Dapper，向数据库中增加数据

提兵百万西湖上，立马吴山第一峰！这篇文章主要讲述Dapper，向数据库中增加数据相关的知识，希望能为你提供帮助。
一、先创建一张“学生”表（注，本文用的数据库是mysql）

CREATE TABLE `t_student` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(6) NOT NULL DEFAULT ‘‘ COMMENT ‘姓名‘, `sex` bit(1) NOT NULL DEFAULT b‘0‘ COMMENT ‘性别，0表示女，1表示男‘, `age` tinyint(3) NOT NULL DEFAULT ‘0‘ COMMENT ‘年龄‘, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT=‘学生‘;

二、先写一个“”类，里面实现数据库连接相关

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; // using MySql.Data.MySqlClient; using System.Data; namespace Dapper_demo { /// < summary> /// 连接类 /// < /summary> public class Dbhelper { /// < summary> /// Mysql连接字符串 /// < /summary> public static string MysqlConnectionString = "server=localhost; user id=root; password=root; database=dapper; port=3306; character set=utf8"; private static IDbConnection connection; /// < summary> /// 获取db连接 /// < /summary> /// < returns> < /returns> public static IDbConnection GetConnection() { IDbConnection myConn = new MySqlConnection(MysqlConnectionString); string connectionString = myConn.ConnectionString; if (connection == null) { connection = new MySqlConnection(connectionString); connection.Open(); } else if (connection.State == System.Data.ConnectionState.Closed) { connection.Open(); } else if (connection.State == System.Data.ConnectionState.Broken) { connection.Close(); connection.Open(); } return connection; } } }

三、插入单条数据

using (var conn = Dbhelper.GetConnection()) { int res = conn.Execute("insert into t_student(`name`,`sex`,`age`) values(@name,@sex,@age)", new { name = "张三", sex = 1, age = 23 }); Console.WriteLine("成功插入" + res + "条数据"); }

【Dapper，向数据库中增加数据】四、插入多条数据

using (var conn = Dbhelper.GetConnection()) { int res = conn.Execute("insert into t_student(`name`,`sex`,`age`) values(@name,@sex,@age)", new[] { new { name = "张三", sex = 1, age = 23 }, new { name = "李四", sex = 1, age = 30 } }); Console.WriteLine("成功插入" + res + "条数据"); }