C#連接數(shù)據(jù)庫的兩種方法
兩種C#連接數(shù)據(jù)庫方法包括用MySQL DriverCS連接MySQL數(shù)據(jù)庫和通過ODBC訪問MySQL數(shù)據(jù)庫。希望這些能對大家有所幫助。
C#連接數(shù)據(jù)庫1、用MySQL DriverCS連接MySQL數(shù)據(jù)庫
先下載和安裝MySQL DriverCS,地址:
http://sourceforge.net/projects/mysqldrivercs/
在安裝文件夾下面找到MySQLDriver.dll,然后將MySQLDriver.dll添加引用到項(xiàng)目中
注:我下載的是版本是 MySQLDriverCS-n-EasyQueryTools-4.0.1-DotNet2.0.exe
- using System;
 - using System.Collections.Generic;
 - using System.ComponentModel;
 - using System.Data;
 - using System.Data.Odbc;
 - using System.Drawing;
 - using System.Linq;
 - using System.Text;
 - using System.Windows.Forms;
 - using MySQLDriverCS;
 - namespace mysql
 - {
 - public partial class Form1 : Form
 - {
 - public Form1()
 - {
 - InitializeComponent();
 - }
 - private void Form1_Load(object sender, EventArgs e)
 - {
 - MySQLConnection conn = null;
 - conn = new MySQLConnection(new MySQLConnectionString("localhost", "inv", "root", "831025").AsString);
 - conn.Open();
 - MySQLCommand commn = new MySQLCommand("set names gb2312", conn);
 - commn.ExecuteNonQuery();
 - string sql = "select * from exchange ";
 - MySQLDataAdapter mda = new MySQLDataAdapter(sql, conn);
 - DataSet ds = new DataSet();
 - mda.Fill(ds, "table1");
 - this.dataGrid1.DataSource = ds.Tables["table1"];
 - conn.Close();
 - }
 - }
 - }
 
C#連接數(shù)據(jù)庫2、通過ODBC訪問mysql數(shù)據(jù)庫:
參考:http://www.microsoft.com/china/community/Column/63.mspx
1. 安裝Microsoft ODBC.net:我安裝的是mysql-connector-odbc-3.51.22-win32.msi
2. 安裝MDAC 2.7或者更高版本:我安裝的是mdac_typ.exe 2.7簡體中文版
3. 安裝MySQL的ODBC驅(qū)動(dòng)程序:我安裝的是 odbc_net.msi
4. 管理工具 -> 數(shù)據(jù)源ODBC –>配置DSN…
5. 解決方案管理中添加引用 Microsoft.Data.Odbc.dll(1.0.3300)
6. 代碼中增加引用 using Microsoft.Data.Odbc;
- using System;
 - using System.Collections.Generic;
 - using System.ComponentModel;
 - using System.Drawing;
 - using System.Linq; //vs2005好像沒有這個(gè)命名空間,在c#2008下測試自動(dòng)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);
 - //處理異常:插入重復(fù)記錄有異常
 - try{
 - cmd.ExecuteNonQuery();
 - }
 - catch(Exception ex){
 - Console.WriteLine("record duplicate.");
 - }finally{
 - cmd.Dispose();
 - }
 - //***********************用read方法讀數(shù)據(jù)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控件顯示數(shù)據(jù)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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