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(); } }}