C#使用开源驱动连接操作MySQL数据库

using System;
using System.IO;
 
using MySQLDriverCS; //引入的命名空间就这个
using System.Data.Common;
 
namespace cc.unmi
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //MySQLDriverCS 有了 MySQLConnectionStringBuilder 和 MySQLConnectionString 来构造连接字符串
            //其实反而有点故弄玄虚，也许是以前直接用连接字符串习惯了
            MySQLConnectionString conStr = new MySQLConnectionString("localhost", "unmi_db", "unmi", "xxxxxx");
 
            //从 MySQLConnectionStringBuilder 来看似乎可支持的属性较少，不知道连接池那些功能怎么样
            //string connStr = "Data Source=unmi_db;Password=xxxxxx;User ID=unmi;Location=localhost;Port=3306;Extended Properties=";
 
            MySQLConnection conn = new MySQLConnection(conStr.AsString); //或 new MySQLConnection(connStr);
 
            conn.Open();
 
            //参数用 @, 同样支持 ? 的方式, 应该也是不推荐用 ? 的形式
            //string sql = "update wp_options set option_value='http://unmi.cc' where option_id=?id and <a href="mailto:option_name=@name">option_name=@name</a>";
            string sql = "select option_name from wp_options where option_id=?id and <a href="mailto:option_name=@name">option_name=@name</a>";
 
            MySQLCommand com = new MySQLCommand(sql, conn);
 
            MySQLParameter paraId = new MySQLParameter("?id", 1);
            MySQLParameter paraName = new MySQLParameter("@name", "siteurl");
 
            //其实是加在 MySQLParameterCollection 里的
            //看起来与 AddWithValue() 有异曲同功之妙，比如可写成 com.Parameters.Add(new MySQLParameter("@id",1);
            com.Parameters.Add(paraId);
            com.Parameters.Add(paraName);
 
            //如果是查询
            //MySQLDataReader dr = com.ExecuteReaderEx();//执行 ExecuteReaderEx() 返回的才是 MySQLDataReader
 
            DbTransaction trans = conn.BeginTransaction(); //开启事物
 
            try
            {
                //com.ExecuteNonQuery();
                //还要执行更多的语句时应使用事物
                Console.WriteLine(com.ExecuteScalar().ToString());
                trans.Commit();
            }
            catch (MySQLException ex)
            {
                Console.WriteLine(ex.Message);
                trans.Rollback();
            }
            finally
            {
                conn.Close();
            }
 
            Console.ReadKey();
        }
    }
}

{"Could not load file or assembly 'MySQLDriverCS, Version=3.0.1735.36021, Culture=neutral, PublicKeyToken=172f94dfb0faf263' or one of its dependencies. An attempt was made to load a program with an incorrect format."}

 new MySQLInsertCommand(
                dbCon,//连接
                new object[,] { //字段名及对应值
                    {"SettingID",100},
                    {"SettingValue","https://www.jb51.net"}
                },
                "Settings" //表名
            ); //new 后即执行，可用 bSuccess 与 Query 属性分别获得成功与否及相应的 SQL
 
            //这个 MySQLSelectCommand 有点让人蛋疼，还不如直接 SQL 痛快
            DataTable dt = new MySQLSelectCommand(dbCon, //连接
                new string[] { "SettingID", "SettingValue" },//要查询的字段列表
                new string[] { "Settings" }, // 要查询的表，可以多个
                new object[,] { { "SettingID", "=", 100 } },//条件
                null,
                null //后面还可以有 limit, distinct 等指令及参数
            ).Table; //获得 DataTable
 
            //更新时用这种方式还算方便
            new MySQLUpdateCommand(dbCon,
                new object[,] { { "SettingValue", "https://www.jb51.net" } },
                "Settings",
                new object[,] { { "SettingID", "=", 100 } },
                null
            ); //new 后即执行，可用 bSuccess 与 Query 属性分别获得成功与否及相应的 SQL
 
            //参数与 MySQLUpdateCommand 的后四个相同
            new MySQLDeleteCommand(dbCon, "Trash", null, null);