C#事务处理（Execute Transaction）实例解析

using System;
using System.Data;
using System.Data.SqlClient;
namespace ExecuteTransaction
{
 /// <summary>
 /// ExecuteTransaction 的摘要说明。
 /// </summary>
 public class ExecuteTransaction
 {
 public static void Main()
 {
  SqlConnection mySqlConnection =
  new SqlConnection(
  "server=localhost;database=Northwind;uid=sa;pwd=sa"
  );
  mySqlConnection.Open();
  // 创建SqlTransaction 对象并用SqlConnection对象的
  // BeginTransaction()方法开始事务
  SqlTransaction mySqlTransaction =
  mySqlConnection.BeginTransaction();
  // 创建保存SQL语句
  SqlCommand mySqlCommand = mySqlConnection.CreateCommand();
  // 将Transaction属性设置为上面所生成的SqlTransaction对象
  mySqlCommand.Transaction = mySqlTransaction;
  // 将SqlCommand对象的CommandText属性设置为第一个INSERT语句，
  // 第一个INSERT语句在Customers表中增加一行
  mySqlCommand.CommandText =
  "INSERT INTO Customers (" +
  " CustomerID, CompanyName" +
  ") VALUES (" +
  " 'Micro', 'Microsoft Corporation'" +
  ")";
  // 执行第一个INSERT语句
  Console.WriteLine("Running first INSERT statement");
  mySqlCommand.ExecuteNonQuery();
  // 将SqlCommand对象的CommandText属性设置为第二个INSERT语句，
  // 第二个INSERT语句在Orders表中增加一行
  mySqlCommand.CommandText =
  "INSERT INTO Orders (" +
  " CustomerID" +
  ") VALUES (" +
  " 'Micro'" +
  ")";
  // 执行第二个INSERT语句
  Console.WriteLine("Running second INSERT statement");
  mySqlCommand.ExecuteNonQuery();
  // 提交事务，使INSERT语句增加的两行在数据库中保存起来
  Console.WriteLine("Committing transaction");
  mySqlTransaction.Commit();
  mySqlConnection.Close();
 }
 }
}