同时执行两条SQL语句的方法：

 public static void ExecuteSqlTran(string SQLString1,string SQLString2)
  {
   using (SqlConnection conn = new SqlConnection(strDBConnectionString))
   {
    conn.Open();
    SqlCommand cmd = new SqlCommand();
    cmd.Connection=conn;    
    SqlTransaction tx=conn.BeginTransaction();   
    cmd.Transaction=tx;    
    try
    {     
     cmd.CommandText=SQLString1;
     cmd.ExecuteNonQuery();
     cmd.CommandText=SQLString2;
     cmd.ExecuteNonQuery();     
     tx.Commit();     
    }
    catch(System.Data.SqlClient.SqlException E)
    {  
     tx.Rollback();
     throw new Exception(E.Message);
    }
   }
  } 

如果有多条SQL语句需要放在一个事务里实现执行，就用下面这个方法：

    /// <summary>
  /// 执行多条SQL语句，实现数据库事务。
  /// </summary>
  /// <param name="SQLStringList">多条SQL语句</param>  
  public static void ExecuteSqlTran(ArrayList SQLStringList)
  {
   using (SqlConnection conn = new SqlConnection(connectionString))
   {
    conn.Open();
    SqlCommand cmd = new SqlCommand();
    cmd.Connection=conn;    
    SqlTransaction tx=conn.BeginTransaction();   
    cmd.Transaction=tx;    
    try
    {     
     for(int n=0;n<SQLStringList.Count;n++)
     {
      string strsql=SQLStringList[n].ToString();
      if (strsql.Trim().Length>1)
      {
       cmd.CommandText=strsql;
       cmd.ExecuteNonQuery();
      }
     }          
     tx.Commit();     
    }
    catch(System.Data.SqlClient.SqlException E)
    {  
     tx.Rollback();
     throw new Exception(E.Message);
    }
   }
  }