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This article introduces the relevant knowledge of "lightweight ORM framework Dapper application to achieve In operation". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

The code for Dapper to use the in operator is as follows:

Using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Configuration;using Dapper;using System.Data.SqlClient;using System.Data;using DapperApplicationByIn.Model;namespace DapperApplicationByIn {class Program {static void Main (string [] args) {/ / define the connection string string conn = ConfigurationManager.ConnectionStrings ["AppConnection"] .ConnectionString # region in query using (IDbConnection connection = new SqlConnection (conn)) {var sql = "select * from Users where Email in @ emails"; var result = connection.Query (sql, new {emails = new string [2] {"fqy@qq.com", "hyj@163.com"}}) Result.AsList () .ForEach (p = > {Console.WriteLine ("Id:" + p.UserId + "UserName:" + p.Username + "Email:" + p.Email + "Address:" + p.Address);});} # UserID ();}

The result of running the program:

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