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C#处理Access中的事务

发布时间:2009年07月26日点击数: 未知

 所谓事务,就是把多件事情当做一件事情来处理。也就是大家同在一条船上!
由一个事务来完成多个表的同步操作,要么都执行成功,要么都不成功.下面举个例子,用C#实现Access数据库事务的处理方法:

向一个表提交数据,同时更新另一个表中的数据

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.OleDb;


public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    protected void Button1_Click(object sender, EventArgs e)
    {
        string id = "";
        string strCon = System.Configuration.ConfigurationManager.AppSettings["ConnectStr"].ToString();
        OleDbConnection con = new OleDbConnection(strCon);    
        OleDbDataAdapter adp = new OleDbDataAdapter();
        OleDbDataAdapter adp1 = new OleDbDataAdapter();
        try
        {
            con.Open();
            OleDbTransaction tra = con.BeginTransaction(); //创建事务,开始执行事务
            adp = new OleDbDataAdapter("select * from 序号表", con);
            adp.SelectCommand.Transaction = tra;
            adp1=new OleDbDataAdapter("select * from 节目表", con);
            adp1.SelectCommand.Transaction = tra;

            OleDbCommandBuilder thisBuilder = new OleDbCommandBuilder(adp);  
            OleDbCommandBuilder thisBuilder1 = new OleDbCommandBuilder(adp1);  

            DataSet ds = new DataSet();
            
            adp.Fill(ds,"aa");//添加数据集
            id = ds.Tables["aa"].Rows[0][1].ToString();
            Int64 s = 0;
            s = Convert.ToInt64(id) + 1;
            id = s.ToString("0000000#");
            ds.Tables["aa"].Rows[0][1] = id;

            adp.Update(ds,"aa");//执行修改一个表的事务
            adp1.Fill(ds,"bb");
            DataRow dr=ds.Tables["bb"].NewRow();
            dr["ProID"]=id;
            dr["ProName"]="ProName";

            dr["ProTime"]="2";
            dr["ProIsFinish"]="3";
            dr["ProBgColor"]="4";
            dr["ProBgPic"]="5";
            dr["ProStyle"]="6";
            dr["MissionName"]="7";
            dr["ProDescription"]="8";

            ds.Tables["bb"].Rows.Add(dr);
            adp1.Update(ds,"bb");


            tra.Commit();//关闭事务
        }

        catch (Exception ex)
        {
          
        }

        finally
        {
           con.Close();

        }


    }

 

注:Access的事务不支持自动锁定(经试验已经证实),因此Access最好用于本机的程序,b/s中做好不要用,除非你不用事务处理~~!

 

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