c#访问mysql数据库

Posted 2020-08-30 layfork

1.需求

使用c#访问mysql数据库，实现curd

2.安装和类库引用

http://www.tuicool.com/articles/rAbuee

包的下载地址在百度云盘上，也可以通过官方下载

3.数据库操作

读取

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using System.Collections;
using System.Collections.Generic;
using MySql.Data.MySqlClient;
using System.Data;

namespace ConsoleApplication8
{
    class Program
    {
        static void Main(string[] args)
        {

            const string connStr = "server=localhost;database =storecode;user id=root; password=root;";//连接字符串

            MySqlConnection mySqlConn = new MySqlConnection(connStr);


            string sqlStr = "select * from ssc_common_block";//SQL语句
            try
            {
                mySqlConn.Open(); ;//打开连接
                MySqlDataAdapter msda = new MySqlDataAdapter(sqlStr, mySqlConn);//新建MySqlDataAdapter对象
                DataSet ds = new DataSet();//新建Dataset对象
                msda.Fill(ds);//填充DataSet对象
                Console.WriteLine("id\t\tname");
                int cnt = ds.Tables[0].Rows.Count;//读取行数
                for (int ix = 0; ix != cnt; ++ix)
                {
                    Console.WriteLine("{0}\t\t{1}", turnString(ds.Tables[0].Rows[ix].ItemArray[0].ToString()),
                    turnString(ds.Tables[0].Rows[ix].ItemArray[3].ToString()));//循环读取数据 注意索引范围    
                }
                Console.ReadKey();
            }
            catch (MySqlException ex)
            {
                Console.WriteLine(ex.Message);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            finally
            {
                mySqlConn.Close();//关闭连接
            }



        }

        //乱码解决  转换函数
        public static string turnString(string source)
        {
            var en = System.Text.Encoding.GetEncoding("UTF-8");
            var bs = en.GetBytes(source);
            var a = System.Text.Encoding.UTF8.GetString(bs);
            return a;
        }
    }
}