using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections;
using System.Text.RegularExpressions;
using System.Data.SqlClient; 
namespace ConsoleApplication1
{
 class Program
 {
  //注： 在cmd.ExecuteNonQuery()是不允许语句中有GO出现的， 有则出错。
  static string connectionString = "server=20111011-2204\\SQLSERVER2008;uid=ecuser;pwd=1234;database=Stu;";
  static void Main(string[] args)
  {
   string sql = 
@"Alter table Student add DateBak varchar(16) 
  go 
 Update Student set DateBak = convert(char,getdate(),101)
 go 
 Update Student set Memo = DateBak
go 
 Alter table Student drop column DateBak 
go 
";
   Console.WriteLine("1. 不用事务：");
   ExecuteSqlWithGo(sql);
   Console.WriteLine("2. 用事务：");
   ExecuteSqlWithGoUseTran(sql);
   Console.ReadLine();
  }
  public static void ExecuteSqlWithGo(String sql)
  {
   int effectedRows = 0;
   using (SqlConnection conn = new SqlConnection(connectionString))
   {
    conn.Open();
    SqlCommand cmd = new SqlCommand();
    cmd.Connection = conn;
    try
    {
     //注： 此处以 换行_后面带0到多个空格_再后面是go 来分割字符串
     String[] sqlArr = Regex.Split(sql.Trim(), "\r\n\\s*go", RegexOptions.IgnoreCase); 
     foreach (string strsql in sqlArr)
     {
      if (strsql.Trim().Length > 1 && strsql.Trim()!="\r\n")
      {
       cmd.CommandText = strsql;
       effectedRows = cmd.ExecuteNonQuery();
      }
     }
    }
    catch (System.Data.SqlClient.SqlException E)
    {
     throw new Exception(E.Message);
    }
    finally
    {
     conn.Close();
    }
   }
  }
  public static void ExecuteSqlWithGoUseTran(String sql)
  {
   using (SqlConnection conn = new SqlConnection(connectionString))
   {
    conn.Open();
    SqlCommand cmd = new SqlCommand();
    cmd.Connection = conn;
    SqlTransaction tx = conn.BeginTransaction();
    cmd.Transaction = tx;
    try
    {
     //注： 此处以 换行_后面带0到多个空格_再后面是go 来分割字符串
     String[] sqlArr = Regex.Split(sql.Trim(), "\r\n\\s*go", RegexOptions.IgnoreCase); 
     foreach (string strsql in sqlArr)
     {
      if (strsql.Trim().Length > 1 && strsql.Trim() != "\r\n")
      {
       cmd.CommandText = strsql;
       cmd.ExecuteNonQuery();
      }
     }
     tx.Commit();
    }
    catch (System.Data.SqlClient.SqlException E)
    {
     tx.Rollback();
     throw new Exception(E.Message);
    }
    finally
    {
     conn.Close();
    }
   }
  } 
 }
}