c# 连接 mysql 以及实现简易增删改查

1.首先下载连接mysql需要的dll，任意门：http://pan.baidu.com/share/link?shareid=1024071329&uk=2442594409

2.本人选用的时2.0的；

3.然后在工程添加引用如下：

相关类：

using MySql.Data.MySqlClient;
using System;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Emergency.DBClient
{
    public class MySQLconnection
    {
        /// 

        /// MySqlConnection连接对象
        /// 
        private MySqlConnection connection;
        /// 

        /// 服务器地址
        /// 
        private string server;
        /// 

        /// 数据库实例名称
        /// 
        private string database;     
        /// 

        /// 用户名
        /// 
  
        private string uid;
        /// 

        /// 密码
        /// 
        private string password;
        /// 

        /// 端口号
        /// 
        private string port;

        public MySqlConnection getInstance() {
            return connection;
        }

        /// 

        /// 初始化mysql连接
        /// 
        /// 服务器地址
        /// 数据库实例
        /// 用户名称
        /// 密码
        public void Initialize(string server, string database, string uid, string password)
        {
            this.server = server;
            this.uid = uid;
            this.password = password;
            this.database = database;
            //string connectionString = "Data Source=" + server + ";" + "port=" + port + ";" + "Database=" + database + ";" + "User Id=" + uid + ";" + "Password=" + password + ";" + "CharSet = utf8"; ;
            string connectionString = "server=" + server + ";user id=" + uid + ";password=" + password + ";database=" + database;
            connection = new MySqlConnection(connectionString);
        }
        /// 

        /// 打开数据库连接
        /// 
        /// 是否成功
        public bool OpenConnection()
        {
            try
            {
                connection.Open();
                return true;
            }
            catch (MySqlException ex)
            {
                //When handling errors, you can your application's response based on the error number.
                //The two most common error numbers when connecting are as follows:
                //0: Cannot connect to server.
                //1045: Invalid user name and/or password.
                switch (ex.Number)
                {
                    case 0:
                        Console.Write("Cannot connect to server.  Contact administrator");
                        break;

                    case 1045:
                        Console.Write("Invalid username/password, please try again");
                        break;
                }
                return false;
                
            }
        }

       /// 

       /// 关闭数据库连接
       /// 
       /// 
        public bool CloseConnection()
        {
            try
            {
                connection.Close();
                return true;
            }
            catch (MySqlException ex)
            {
                Console.Write(ex.Message);
                return false;
            }
        }

        public MySqlDataAdapter GetAdapter(string SQL)
        {
            MySqlDataAdapter Da = new MySqlDataAdapter(SQL, connection);
            return Da;
        }
        /// 

        /// 构建SQL句柄
        /// 
        /// SQL语句
        /// 
        public MySqlCommand CreateCmd(string SQL)
        {
            MySqlCommand Cmd = new MySqlCommand(SQL, connection);
            return Cmd;
        }
        /// 

        /// 根据SQL获取DataTable数据表
        /// 
        /// 查询语句
        /// 返回表的表名
        /// 
        public DataTable GetDataTable(string SQL, string Table_name)
        {
            MySqlDataAdapter Da = new MySqlDataAdapter(SQL, connection);
            DataTable dt = new DataTable(Table_name);
            Da.Fill(dt);
            return dt;
        }

        /// 

        ///  运行MySql语句返回 MySqlDataReader对象
        /// 
        /// 
        /// MySqlDataReader对象
        public MySqlDataReader GetReader(string SQL)
        {
            MySqlCommand Cmd = new MySqlCommand(SQL, connection);
            MySqlDataReader Dr;
            try
            {
                Dr = Cmd.ExecuteReader(CommandBehavior.Default);
            }
            catch
            {
                throw new Exception(SQL);
            }
            return Dr;
        }

        /// 

        /// 运行MySql语句,返回DataSet对象
        /// 
        /// 查询语句
        /// 待填充的DataSet对象
        /// 表名
        /// 
        public DataSet Get_DataSet(string SQL,DataSet Ds, string tablename)
        {
            MySqlDataAdapter Da = new MySqlDataAdapter(SQL, connection);
            try
            {
                Da.Fill(Ds, tablename);
            }
            catch (Exception Ex)
            {
                throw Ex;
            }
            return Ds;
        }
        /// 

        /// 运行MySql语句,返回DataSet对象，将数据进行了分页
        /// 
        /// 查询语句
        /// 待填充的DataSet对象
        /// 开始项
        /// 每页数据条数
        /// 表名
        /// 
        public DataSet GetDataSet(string SQL, DataSet Ds, int StartIndex, int PageSize, string tablename)
        {
            MySqlDataAdapter Da = new MySqlDataAdapter(SQL, connection);
            try
            {
                Da.Fill(Ds, StartIndex, PageSize, tablename);
            }
            catch (Exception Ex)
            {
                throw Ex;
            }
            return Ds;
        }

        /// 

        /// 添加数据
        /// 
        /// 
        public void getInsert(MySqlCommand mySqlCommand)
        {
            try
            {
                mySqlCommand.ExecuteNonQuery();
            }
            catch (Exception ex)
            {
                String message = ex.Message;
                Console.WriteLine("插入数据失败了！" + message);
            }

        }
        /// 

        /// 修改数据
        /// 
        /// 
        public static void getUpdate(MySqlCommand mySqlCommand)
        {
            try
            {
                mySqlCommand.ExecuteNonQuery();
            }
            catch (Exception ex)
            {

                String message = ex.Message;
                Console.WriteLine("修改数据失败了！" + message);
            }
        }
        /// 

        /// 删除数据
        /// 
        /// 
        public static void getDel(MySqlCommand mySqlCommand)
        {
            try
            {
                mySqlCommand.ExecuteNonQuery();
            }
            catch (Exception ex)
            {
                String message = ex.Message;
                Console.WriteLine("删除数据失败了！" + message);
            }
        }


    }
}

连接测试：

protected void Application_Start(object sender, EventArgs e)
        {
            string server = "localhost";  //服务器
            string database = "db";  //数据库实例
            string uid = "uid";//用户名
            string password = "pwd"; //密码
            MySQLconnection mysqlconn = new MySQLconnection();
            mysqlconn.Initialize(server,database,uid,password);
            mysqlconn.OpenConnection();
            
        }

源码文件：http://download.csdn.net/detail/dujiajiyiyi/9571610