c#连接MySql数据库的两种方法

    二、通过ODBC访问mysql数据库：

    1.安装Microsoft ODBC.net：我安装的是mysql-connector-odbc-3.51.22-win32.msi

    2.安装MDAC 2.7或者更高版本：我安装的是mdac_typ.exe 2.7简体中文版

    3.安装MySQL的ODBC驱动程序：我安装的是 odbc_net.msi

    4.管理工具 -> 数据源ODBC –>配置DSN…

    5.解决方案管理中添加引用 Microsoft.Data.Odbc.dll(1.0.3300)

    6.代码中增加引用 using Microsoft.Data.Odbc;

    using System;

    using System.Collections.Generic;

    using System.ComponentModel;

    using System.Drawing;

    using System.Linq;   //vs2005好像没有这个命名空间，在c#2008下测试自动生成的

    using System.Text;

    using System.Windows.Forms;

    using Microsoft.Data.Odbc;

    namespace mysql

    {

        public partial class Form1 : Form

        {

            public Form1()

            {

                InitializeComponent();

            }

 

            private void Form1_Load(object sender, EventArgs e)

            {

 

                string MyConString = "DRIVER={MySQL ODBC 3.51 Driver};" +

                                     "SERVER=localhost;" +

                                     "DATABASE=inv;" +

                                     "UID=root;" +

                                     "PASSWORD=831025;" +

                                     "OPTION=3";

                OdbcConnection MyConnection = new OdbcConnection(MyConString);

                MyConnection.Open();

                Console.WriteLine("\n success, connected successfully !\n");

                string query = "insert into test values( 'hello', 'lucas', 'liu')";

                OdbcCommand cmd = new OdbcCommand(query, MyConnection);

                //处理异常：插入重复记录有异常

    try{

       cmd.ExecuteNonQuery();

    }

    catch(Exception ex){

                     Console.WriteLine("record duplicate.");

    }finally{

                     cmd.Dispose();

    }

    //***********************用read方法读数据到textbox**********************

                string tmp1 = null;

                string tmp2 = null;

                string tmp3 = null;

                query = "select * from test ";

                OdbcCommand cmd2 = new OdbcCommand(query, MyConnection);

                OdbcDataReader reader = cmd2.ExecuteReader();

                while (reader.Read())

                {

                    tmp1 = reader[0].ToString();

                    tmp2 = reader[1].ToString();

                    tmp3 = reader[2].ToString();

                }

                this.textBox1.Text = tmp1 + " " + tmp2 + " " + tmp3;

                */

    //************************用datagridview控件显示数据表**************************

    string MyConString = "DRIVER={MySQL ODBC 3.51 Driver};" +

                                     "SERVER=localhost;" +

                                     "DATABASE=inv;" +

                                     "UID=root;" +

                                     "PASSWORD=831025;" +

                                     "OPTION=3";

              OdbcConnection MyConnection = new OdbcConnection(MyConString);

    OdbcDataAdapter oda = new OdbcDataAdapter("select * from customer ", MyConnection);

    DataSet ds = new DataSet();

              oda.Fill(ds, "employee");
              this.dataGridView1.DataSource = ds.Tables["employee"];

    */

               MyConnection.Close();

            }

        }

    }

 

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