把access或SQL SEVER数据库内容导出为XML的方法

 

同时把六个表的内容导出成XML文档，带着结构，以便于以后导入。这是在access下调试成功的。如果是sql sever，只要把select字符串修改一下就好。也包括了连接ACCESS数据库的方法。

你测试时要自行建立一下表，然后把表名与字段名改了就好，转载请注明蚂蚁资讯网原创,如果有兴趣的话，点一下你感兴趣的广告连接。

private void accesstoxml()//把ACCESS数据库的内容转成XML文档
        {
            //定义一下生成的文件名

            string xmlname = "myxml";
            //连接数据库
            OleDbConnection conn = null;
            bool connet = false;//表示数据库没连接上
            if (!connet)//如果没连上就连接
            {

                string loadSource = @"Jet OLEDB:Registry Path=;Data Source=" + path.currentpath + "\\mymdb.mdb" + ";Jet OLEDB:Database Password=1234567;Jet OLEDB:System database=;Jet OLEDB:Global Bulk Transactions=1;User ID=Admin;Provider=" + "Microsoft.Jet.OLEDB.4.0" + ";Jet OLEDB:Don’t Copy Locale on Compact=False;Jet OLEDB:SFP=False;Jet OLEDB:Encrypt Database=False;Jet OLEDB:Engine Type=5;Jet OLEDB:Compact Without Replica Repair=False;Jet OLEDB:Global Partial Bulk Ops=2;Extended Properties=;Mode=Share Deny None;Jet OLEDB:Create System Database=False;Jet OLEDB:Database Locking Mode=1";

                //    loadform.progressBar1.Value=40;

                conn = new OleDbConnection(loadSource);
                try
                {
                    conn.Open();
                    connet = true;//连上了
                    //MessageBox.Show("connet");
                }
                catch (Exception e2)
                { MessageBox.Show(e2.Message.ToString()); }
                connet = true;

            }
            //else//如果已经连上了就开始读写

            if (conn != null)
            {

                try
                {                
                            
                    DataSet ds = new DataSet();

            
                    OleDbCommand comm = null;
                    comm = new OleDbCommand(@"SELECT * FROM [Crew_training_recorder] where [toxml]=’a’", conn);
                    OleDbDataAdapter da = new OleDbDataAdapter();
                    da.SelectCommand = comm;                    
                    da.Fill(ds, "Crew_training_recorder");

                    

                    comm = new OleDbCommand(@"SELECT * FROM [DeckLog] where [toxml]=’a’", conn);
                    da.SelectCommand = comm;
                    
                    da.Fill(ds, "DeckLog");

                

                    comm = new OleDbCommand(@"SELECT * FROM [EngineLog] where [toxml]=’a’", conn);
                    da.SelectCommand = comm;
                    da.Fill(ds, "EngineLog");
            

                    comm = new OleDbCommand(@"SELECT * FROM [Ship_Maintenance_Recorder] where [toxml]=’a’", conn);
                    da.SelectCommand = comm;
                    da.Fill(ds, "Ship_Maintenance_Recorder");

                


                    comm = new OleDbCommand("SELECT * FROM [Ship_Particullar]", conn);
                    da.SelectCommand = comm;
                    da.Fill(ds, "Ship_Particullar");

                

                    comm = new OleDbCommand(@"SELECT * FROM [Trouble_shooting_Recorder] where [toxml]=’a’", conn);
                    da.SelectCommand = comm;
                    da.Fill(ds, "Trouble_shooting_Recorder");


                    
                

                    read.toxml("Crew_training_recorder");
                    read.toxml("DeckLog");
                    read.toxml("EngineLog");
                    read.toxml("Ship_Maintenance_Recorder");
                    read.toxml("Ship_Particullar");
                    read.toxml("Trouble_shooting_Recorder");
                

                    if(File.Exists(path.currentpath.ToString().Trim() + @"\data\"+xmlname.Trim()+".xml"))
                    {
                        File.Delete(path.currentpath.ToString().Trim() + @"\data\"+xmlname.Trim()+".xml");
                    }
                    ds.WriteXml(path.currentpath.ToString().Trim() + @"\data\"+xmlname.Trim()+".xml", XmlWriteMode.WriteSchema);

                    comm.Dispose();
                    da.Dispose();
                    ds.Dispose();

                }
                catch (Exception e3)
                { MessageBox.Show(e3.Message.ToString()) ; }
                conn.Close();
                this.timer2.Enabled = false;

            }
            else
            {
                MessageBox.Show("The database is not connected,try again please.");
                this.timer2.Enabled = false;
            }
        }