C#批量执行的事物

1、创建事务的结构

SqlConnection   sqlConnection   =   new   SqlConnection();   
  ...初始化连接   
  //   开启事务   
  SqlTransaction   sqlTransaction   =   sqlConnection.BeginTransaction();   
  //   将事务应用于Command   
  SqlCommand   sqlCommand   =   new   SqlCommand();   
  sqlCommand.Connection   =   sqlConnection;   
  sqlCommand.Transaction   =   sqlTransaction;     
  try   
  {   
  //   利用sqlcommand进行数据操作   
  ...   
  //   成功提交   
  sqlTransaction.Commit();   
  }   
  catch(Exception   ex)   
  {   
  //   出错回滚   
  sqlTransaction.Rollback();   
  }   

  

2、简单例子

                 

{   
                          DataTable   dt   =   new   DataTable();   
                          System.Data.SqlClient.SqlConnection   cnn   =   new   System.Data.SqlClient.SqlConnection("连接字符串");   
                          System.Data.SqlClient.SqlCommand   cm   =   new   System.Data.SqlClient.SqlCommand();   
                          cm.Connection   =   cnn;   
                          cnn.Open();   
                          System.Data.SqlClient.SqlTransaction   trans   =   cnn.BeginTransaction();   
                          try   
                          {   
                                  foreach(DataRow   dr   in   dt.Rows)   
                                  {  
                                          cm.CommandText   =   "update   [表]   set   [数量]   =   @amount   where   productID   =   @productID";   
                                          cm.Parameters.Add("@amount",SqlDbType.Int);   
                                          cm.Parameters["@amount"].Value   =   Convert.ToInt32(dr["amount"]);   
                                          cm.Parameters.Add("@productID",SqlDbType.VarChar);   
                                          cm.Parameters["@productID"].Value   =   dr["productID"].ToString();   
                                          cm.ExecuteNonQuery();   
                                  }   
                                  trans.Commit();   
                          }   
                          catch   
                          {   
                                  trans.Rollback();   
                          }   
                          finally   
                          {   
                                  cnn.Close();   
                                  trans.Dispose();   
                                  cnn.Dispose();   
                          }   
                  }

 

3、SQl server中的事务例子

begin transaction save transaction A

insert into demo values('BB','B term') rollback TRANSACTION A

create table demo2(name varchar(10),age int) insert into demo2(name,age) values('lis',1) rollback transaction

insert into demo values('BB','B term')

commit TRANSACTION A

commit TRANSACTION 

4、注意

  1。事务必须在连接打开后BeginTransaction();

  2.事务添加到SqlCommand(sqlCommand.Transaction   =   sqlTransaction;   )

  3、其他数据库对应做相应调整

  4、可以用微软提供的一个dll,很方便.

 

注:本文转载于:http://www.cnblogs.com/Garden-blog/archive/2011/04/21/2023417.html  3Q!

posted @ 2012-07-27 15:36  +-/\-+  阅读(289)  评论(0编辑  收藏  举报