Dapper的使用

using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Dapper;
using Model;

namespace DAL
{
    public class Dbhelper
    {
        
        private static readonly string con = "Data Source=.;Initial Catalog=Shanke_DB;Integrated Security=True";

        /// <summary>
        /// 添加
        /// </summary>
        /// <param name="user"></param>
        /// <returns></returns>
        public static int Insert(UserInfo user)
        {
            using (IDbConnection conn = new SqlConnection(con))
            {
                return conn.Execute("insert into UserInfo(User_Name,User_Sex,User_Phone,User_Hobby) value(@User_Name,@User_Sex,@User_Phone,@User_Hobby)", user);
            }
        }
        //查询
        public static List<UserInfo> Query()
        {
            using (IDbConnection conn = new SqlConnection(con))
            {
                return conn.Query<UserInfo>("select * from UserInfo").ToList();
            }
        }
        /// <summary>
        /// 带条件查询
        /// </summary>
        /// <param name="user"></param>
        /// <returns></returns>
        public static UserInfo Query(UserInfo user)
        {
            using (IDbConnection conn = new SqlConnection(con))
            {
                return conn.Query<UserInfo>("select * from UserInfo where User_Name=@User_Name",user).SingleOrDefault();
            }
        }

        //删除
        public static int Delete(UserInfo user)
        {
            using (IDbConnection connection = new SqlConnection(con))
            {
                return connection.Execute("delete from UserInfo where Id=@Id", user);
            }
        }

        public static int Delete(List<UserInfo> user)
        {
            using (IDbConnection connection = new SqlConnection(con))
            {
                return connection.Execute("delete from UserInfo where Id=@Id", user);
            }
        }

        public static int Update(UserInfo user)
        {
            using (IDbConnection connection = new SqlConnection(con))
            {
                return connection.Execute("update UserInfo set User_Name=@User_Name where Id=@Id", user);
            }
        }
        //修改
        public static int Update(List<UserInfo> user)
        {
            using (IDbConnection connection = new SqlConnection(con))
            {
                return connection.Execute("update UserInfo set User_Name=@User_Name where Id=@Id", user);
            }
        }
    }
}