using System;using System.Configuration;using MySql.Data.MySqlClient;/// <summary>/// TestDatebase 的摘要說明/// </summary>public class TestDatebase{    public TestDatebase()    {        //        // TODO: 在此處添加構造函數邏輯        //    }    public static void Main(String[] args)    {        MySqlConnection mysql = getMySqlCon();        //查詢sql        String sqlSearch = "select * from student";        //插入sql        String sqlInsert = "insert into student values (12,'張三',25,'大專')";        //修改sql        String sqlUpdate = "update student set name='李四' where id= 3";        //刪除sql        String sqlDel = "delete from student where id = 12";        //打印SQL語句        Console.WriteLine(sqlDel);        //四種語句對象        //MySqlCommand mySqlCommand = getSqlCommand(sqlSearch, mysql);        //MySqlCommand mySqlCommand = getSqlCommand(sqlInsert, mysql);        //MySqlCommand mySqlCommand = getSqlCommand(sqlUpdate, mysql);        MySqlCommand mySqlCommand = getSqlCommand(sqlDel, mysql);        mysql.Open();        //getResultset(mySqlCommand);        //getInsert(mySqlCommand);        //getUpdate(mySqlCommand);        getDel(mySqlCommand);        //記得關閉        mysql.Close();       String readLine = Console.ReadLine();    }    /// <summary>    /// 建立mysql數據庫鏈接    /// </summary>    /// <returns></returns>    public static MySqlConnection getMySqlCon()    {        String mysqlStr = "Database=test;Data Source=127.0.0.1;User Id=root;PassWord=root;pooling=false;CharSet=utf8;port=3306";        // String mySqlCon = ConfigurationManager.ConnectionStrings["MySqlCon"].ConnectionString;        MySqlConnection mysql = new MySqlConnection(mysqlStr);        return mysql;    }    /// <summary>    /// 建立執行命令語句對象    /// </summary>    /// <param name="sql"></param>    /// <param name="mysql"></param>    /// <returns></returns>    public static MySqlCommand getSqlCommand(String sql,MySqlConnection mysql)    {        MySqlCommand mySqlCommand = new MySqlCommand(sql, mysql);        //  MySqlCommand mySqlCommand = new MySqlCommand(sql);        // mySqlCommand.Connection = mysql;        return mySqlCommand;    }    /// <summary>    /// 查詢并獲得結果集并遍歷    /// </summary>    /// <param name="mySqlCommand"></param>    public static void getResultset(MySqlCommand mySqlCommand)    {        MySqlDataReader reader = mySqlCommand.ExecuteReader();        try        {            while (reader.Read())            {                if (reader.HasRows)                {                    Console.WriteLine("編號:" + reader.GetInt32(0) + "|姓名:" + reader.GetString(1) + "|年齡:" + reader.GetInt32(2) + "|學歷:" + reader.GetString(3));                }            }        }        catch (Exception)        {            Console.WriteLine("查詢失敗了！");        }        finally        {            reader.Close();        }    }    /// <summary>    /// 添加數據    /// </summary>    /// <param name="mySqlCommand"></param>    public static void getInsert(MySqlCommand mySqlCommand)    {        try        {            mySqlCommand.ExecuteNonQuery();        }        catch (Exception ex)        {            String message = ex.Message;            Console.WriteLine("插入數據失敗了！" + message);        }          }    /// <summary>    /// 修改數據    /// </summary>    /// <param name="mySqlCommand"></param>    public static void getUpdate(MySqlCommand mySqlCommand)    {        try        {            mySqlCommand.ExecuteNonQuery();        }        catch (Exception ex)        {            String message = ex.Message;            Console.WriteLine("修改數據失敗了！" + message);        }    }    /// <summary>    /// 刪除數據    /// </summary>    /// <param name="mySqlCommand"></param>    public static void getDel(MySqlCommand mySqlCommand)    {        try        {            mySqlCommand.ExecuteNonQuery();        }        catch (Exception ex)        {            String message = ex.Message;            Console.WriteLine("刪除數據失敗了！" + message);        }    }}