asp.net中XML文件作為中間件進行數據交換功能的實現(c#,sql2000)

程序段中對語句作了說明。主要使用XmlWriter類進行XML文件生成。
下面這是由關系數據庫生成相應XML文件過程。由於XML只是中間件，所以忽略了Schema或者DTD。
 1        private void Page_Load(object sender, System.EventArgs e)
 2        {
 3            // 在此處放置用戶代碼以初始化頁面
 4            //基本信息定義
 5            String strTableName="systypes";
 6            String strConnection="server=suntears;user id=sa;passWord=041210;database=webapplication1_db";
 7            String strSql="select * from "+strTableName;
 8            SqlConnection objConn=new SqlConnection(strConnection);
 9            SqlDataAdapter objAdapter=new SqlDataAdapter(strSql,objConn);
10            DataSet objDSet=new DataSet();
11            objAdapter.Fill(objDSet,"temp");
12            XmlTextWriter objXMLWriter;
13            String strtemp1=Request.PhysicalApplicationPath;
14            String strpath=strtemp1+"qiming.XML";
15            //初始化XmlWriter.用此類寫XML文件
16            objXmlWriter=new XMLTextWriter(strpath,null);
17            //創建開頭的XML聲明
18            objXMLWriter.WriteStartDocument();
19            //創建根元素XML1
20            objXmlWriter.WriteStartElement("XML1");
21            //表名為元素名，字段名為屬性，表中的記錄為屬性的值
22            for(int i=0;i<objDSet.Tables["temp"].Rows.Count;i++)
23            {
24            objXMLWriter.WriteStartElement("menu");
25                for(int j=0;j<objDSet.Tables["temp"].Columns.Count;j++)
26                {
27           &nb
sp;        //寫入屬性
28                    objXMLWriter.WriteAttributeString(objDSet.Tables["temp"].Columns[j].ColumnName,objDSet.Tables["temp"].Rows[i][j].ToString());
29                }
30                objXMLWriter.WriteEndElement();
31            }
32            objXMLWriter.WriteEndElement();
33            objXMLWriter.WriteEndDocument();
34            //用close方法關閉文件，否則文件將被鎖定
35            objXMLWriter.Close();
36            // 在頁面上顯示結果
37            string strXMLResult;
38            StreamReader obJSR = File.OpenText(strpath);
39            strXMLResult = obJSR.ReadToEnd();
40            obJSR.Close();
41            Response.Write("<pre>" + Server.HtmlEncode(strXMLResult) + "<pre>");
42        }
下面是通過上面程序生成的XML文件生成關系數據庫的代碼

 1        private void Page_Load(object sender, System.EventArgs e)
 2        {
 3            // 在此處放置用戶代碼以初始化頁面
 4            //基本信息定義
 5            int cx=1;
 6            string strConn="server=suntears;user id=sa;passWord=;database=XML_example";
 7            string straPPStr=Request.PhysicalApplicationPath;
 8            string strpath=straPPStr+"qiming.XML";
 9            string strtablename="XML1";
10            string strCreatetable="create table "+strtablename+"(";
11            XmlTextReader objXmlReader=new XMLTextReader(strpath);
12            SqlConnection
objConn=new SqlConnection(strConn);
13            SqlCommand objCommand;
14            SqlDataAdapter objAdapter;
15            DataSet objDSet=new DataSet();
16            DataRow objrow;
17            XMLNodeType objNodeType;
18            //采用XmlReader類進行XML文件訪問操作
19            //XMLReader采用拉（pull）模式。因此通過Read()方法迭代各個節點
20            while(objXMLReader.Read())
21            {
22                objNodeType=objXMLReader.NodeType;
23                //根據節點類型進行不同操作
24                switch(objNodeType)
25                {
26                    //XML文件開頭的聲明
27                    case XmlNodeType.XMLDeclaration:
28                        Response.Write("11111"+objXMLReader.Name+"<br>");
29                        break;
30                    //正常節點類型
31                    case XMLNodeType.Element:
32                        //根據屬性個數判斷是否是根元素
33                        if(objXMLReader.AttributeCount>0)
34                        {
35                            //cx作為標志位。第一次訪問非根元素節點時根據元素結構生成數據庫
36     &nb
sp;                      if(cx==1)
37                            {
38                                while(objXMLReader.MoveToNextAttribute())
39                                {
40                                    strCreatetable=strCreatetable+objXMLReader.Name+" varchar(50), ";
41                                }
42                                strCreatetable=strCreatetable+")";
43                                objCommand=new SqlCommand(strCreatetable,objConn);
44                                objConn.Open();
45                                objCommand.ExecuteNonQuery();
46                                objConn.Close();
47                                objAdapter=new SqlDataAdapter("select * from "+strtablename,objConn);
48                                objAdapter.Fill(objDSet,strtablename);
49                    
;  objXMLReader.MoveToFirstAttribute();
50                                //更改標志為cx數值
51                                cx=0;
52                            }
53                            //將XML文件中數據轉存到DataSet對象中
54                            objrow=objDSet.Tables[strtablename].NewRow();
55                            objXMLReader.MoveToFirstAttribute();
56                            for(int j=0;j<objXMLReader.AttributeCount;j++)
57                            {
58                                objrow[j]=objXMLReader.Value.ToString();
59                                objXMLReader.MoveToNextAttribute();
60                            }
61                            objDSet.Tables[strtablename].Rows.Add(objrow);
62                        }
63                        break;
64                }
65            }
66          &nb
sp; //顯示轉存後的數據表
67            DataGrid1.DataSource=objDSet.Tables[strtablename];
68            DataGrid1.DataBind();
69        }將數據更新到數據庫的代碼沒有編寫，自己弄吧^_^

http://suntears.cnblogs.com/archive/2006/06/02/416207.Html