老外的.net与mysql存储过程编程

核心提示：created this example because I could not find a simple explanation for using MySQL 5 with ObjectDataSources in asp.net 2.0.Introductioni created this example be

created this example because I could not find a simple explanation for using MySQL 5 with ObjectDataSources in asp.net 2.0.

Introduction
i created this example because I could not find a simple explanation for using MySQL 5 with ObjectDataSources in ASP.NET 2.0.

let me say, I am really imPRessed with MySQL. I was able to install it easily on my Windows xp machine and get it running in about an hour. I am a long time MS SQL user, and was very frustrated with trying to use Oracle and Firebird. I realize, the problem is that I am spoiled from MS SQL Server, but hey I'm busy and I like easy to use tools :)

if you're getting started with MySQL and ASP.NET, then I recommend these steps:

Go to the MySQL website, download and install “Current Release (recommended)”.
Download and install: MySQL Administrator (to administer your MySQL server, the first download just installs only the server).
Download and install: Connector/Net 1.0 (you need this to get your ASP.NET pages to talk to your MySQL server).
You can also download: MySQL Query Browser – (a graphical client to work with your MySQL databases and run queries).
Read and follow this guide: A Step-by-Step Guide to Using MySQL with ASP.NET.
To install the code:
You must have MySQL 5 up and running.
Install MySQL Connector/Net 1.0.
Create a MySQL 5 database named Test.
Create a table in that database called Message:
CREATE TABLE test.message (　  Entry_ID INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,　  Name VARCHAR(45),　  Email VARCHAR(45),　  Message VARCHAR(200),　  PRIMARY KEY (Entry_ID)　  )　  AUTO_INCREMENT=32　  CHARACTER SET latin1 COLLATE latin1_swedish_ci;
Create these four MySQL stored procedures in the Test database:
PROCEDURE `test`.`DeleteMessage`(IN param1 INT)BEGINDelete From test.messageWHERE Entry_ID = param1;END
PROCEDURE `test`.`InsertMessage`(IN param1 VARCHAR(50), IN param2　　 VARCHAR(50), IN param3 VARCHAR(200))BEGININSERT INTO message(Name, Email, Message)VALUES(param1,param2,param3);END
PROCEDURE `test`.`ShowAll`()BEGINSELECT　 message.Entry_ID,  message.Name,　 message.Email,　 message.MessageFROM  test.message;END
PROCEDURE `test`.`UpdateMessage`(IN paramkey INT, IN param1 VARCHAR(50),　　 IN param2 VARCHAR(50), IN param3 VARCHAR(200))BEGINUPDATE　  messageSET　　　　　　  Name = param1, Email = param2, Message = param3WHERE　　 (message.Entry_ID = paramkey);END
Unzip "MySQL" and configure IIS to point to it. Make sure you configure the web server to use ASP.NET 2.0.
Open "web.config" and change the line:

to connect to your MySQL database.

Browse to the default.aspx page through IIS.
this is the class that uses Generics to supply the data that is consumed by the ObjectDataSource control:

using System;using System.Collections.Generic;using System.Data;using MySql.Data.MySqlClient;using System.Configuration;using System.ComponentModel;[DataObject(true)]public static class MessagesDB{　  private static string GetConnectionString()　  {　　　  return ConfigurationManager.ConnectionStrings　　　  ["MySQLConnectionString"].ConnectionString;　  }　  [DataObjectMethod(DataObjectMethodType.Select)]　  public static List GetMessages()　  {　　　  MySqlCommand cmd = new MySqlCommand("ShowAll",　　　　　　　　　　　　　  new MySqlConnection(GetConnectionString()));　　　  cmd.CommandType = CommandType.StoredProcedure;　　　  cmd.Connection.Open();　　　  MySqlDataReader dr =　　　　　  cmd.ExecuteReader(CommandBehavior.CloseConnection);　　　  List MessageItemlist = new List();　　　  while (dr.Read())　　　  {　　　　　  MessageItem MessageItem = new MessageItem();　　　　　  MessageItem.Entry_ID = Convert.ToInt32(dr["Entry_ID"]);　　　　　  MessageItem.Message = Convert.ToString(dr["Message"]);　　　　　  MessageItem.Name = Convert.ToString(dr["Name"]);　　　　　  MessageItem.Email = Convert.ToString(dr["Email"]);　　　　　  MessageItemlist.Add(MessageItem);　　　  }　　　  dr.Close();　　　  return MessageItemlist;　  }　  [DataObjectMethod(DataObjectMethodType.Insert)]　  public static void InsertMessage(MessageItem MessageItem)　  {　　　  MySqlCommand cmd = new MySqlCommand("InsertMessage",　　　　　　　　　　　　　  new MySqlConnection(GetConnectionString()));　　　  cmd.CommandType = CommandType.StoredProcedure;　　　  cmd.Parameters.Add(new MySqlParameter("param1", MessageItem.Name));　　　  cmd.Parameters.Add(new MySqlParameter("param2", MessageItem.Email));　　　  cmd.Parameters.Add(new MySqlParameter("param3", MessageItem.Message));　　　  cmd.Connection.Open();　　　  cmd.ExecuteNonQuery();　　　  cmd.Connection.Close();　  }　  [DataObjectMethod(DataObjectMethodType.Update)]　  public static int UpdateMessage(MessageItem MessageItem)　  {　　　  MySqlCommand cmd = new MySqlCommand("UpdateMessage",　　　　　　　　　　　　　  new MySqlConnection(GetConnectionString()));　　　  cmd.CommandType = CommandType.StoredProcedure;　　　  cmd.Parameters.Add(new MySqlParameter("paramkey", MessageItem.Entry_ID));　　　  cmd.Parameters.Add(new MySqlParameter("param1", MessageItem.Name));　　　  cmd.Parameters.Add(new MySqlParameter("param2", MessageItem.Email));　　　  cmd.Parameters.Add(new MySqlParameter("param3", MessageItem.Message));　　　  cmd.Connection.Open();　　　  int i = cmd.ExecuteNonQuery();　　　  cmd.Connection.Close();　　　  return i;　  }　  [DataObjectMethod(DataObjectMethodType.Delete)]　  public static int DeleteMessage(MessageItem MessageItem)　  {　　　  MySqlCommand cmd = new MySqlCommand("DeleteMessage",　　　　　　　　 new MySqlConnection(GetConnectionString()));　　　  cmd.CommandType = CommandType.StoredProcedure;　　　  cmd.Parameters.Add(new MySqlParameter("param1", MessageItem.Entry_ID));　　　  cmd.Connection.Open();　　　  int i = cmd.ExecuteNonQuery();　　　  cmd.Connection.Close();　　　  return i;　  }
the class above uses the class "MessageItem" to pass the parameters to and from the ObjectDataSource control:

using System;public class MessageItem{　  int _Entry_ID;　  string _Message;　  string _Name;　  string _Email;　  public MessageItem()　  {　  }　  public int Entry_ID　  {　　　  get　　　  {　　　  return _Entry_ID;　　　  }　　　  set　　　  {　　　  _Entry_ID = value;　　　  }　  }　  public string Message　  {　　　  get　　　  {　　　　　  return _Message;　　　  }　　　  set　　　  {　　　　　  _Message = value;　　　  }　  }　  public string Name　  {　　　  get　　　  {　　　　　  return _Name;　　　  }　　　  set　　　  {　　　　　  _Name = value;　　　  }　  }　  public string Email　  {　　　  get　　　  {　　　　　  return _Email;　　　  }　　　  set　　　  {　　　　　  _Email = value;　　　  }　  }}
this is the .aspx file that contains the ObjectDataSource control as well as a GridView for editing data and a DetailsView for inserting a record:

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