微軟的visual studio沒有自帶連接Mysql的驅動，要去網上下載一個mysql-connector-net-6.4.3驅動，然后安裝就可以使用。
下面是我封裝好的連接數據庫的類，直接調用即可。
代碼如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using MySql.Data.MySqlClient;
namespace DAL
{
public class GetConnection
{
private static MySqlConnection _connection;
/// <summary>
/// 獲取數據庫連接橋
/// </summary>
private static MySqlConnection Connection
{
get
{
//string connectionString = ConfigurationManager.AppSettings["ConnectionString"];
string connectionString = "server=localhost;user id=root; password=root; database=system; pooling=false";
//server=222.222.222.222;port=3306;uid=user;pwd=;database=basename;遠程連接的
//string connectionString = "Data Source=202.192.72.22;Initial Catalog=wwj;Persist Security Info=True;User ID=wwj;Password=wwj123";
if (_connection == null)
{
_connection = new MySqlConnection(connectionString);
_connection.Open();
}
if (_connection.State == ConnectionState.Closed)
{
_connection.Open();
}
if (_connection.State == ConnectionState.Broken)
{
_connection.Close();
_connection.Open();
}
return GetConnection._connection;
}
}
/// <summary>
/// 獲取表數據
/// </summary>
/// <param name="sql"></param>
/// <returns></returns>
public static MySqlDataReader GetDataRead(string sql)
{
MySqlCommand command = new MySqlCommand(sql, Connection);
MySqlDataReader read = command.ExecuteReader();
return read;
}
public static int NoSelect(string sql)
{
MySqlCommand command = new MySqlCommand(sql, Connection);
int row = command.ExecuteNonQuery();
return row;
}
public static DataTable GetDataTable(string sql)
{
MySqlCommand command = new MySqlCommand(sql, Connection);
DataTable dt = new DataTable();
MySqlDataAdapter sda = new MySqlDataAdapter(command);
sda.Fill(dt);
return dt;
}
/// <summary>
/// 執行sql語句，返回一行一列。
/// </summary>
/// <param name="sql">SQL語句</param>
/// <returns></returns>
public static string GetScalar(string sql)
{
MySqlCommand command = new MySqlCommand(sql, Connection);
return command.ExecuteScalar().ToString();
}
}
}
比如說你想執行刪除的，你可以調用GetConnection.NoSelect("delete from UserInfo where Id=1");讀數據庫的某一張表，可以調用GetConnection.GetDataTable("select * from UserInfo");調用都很方便。
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