C # recursively read and write XML files

Because the node formats of the XML files to be operated are not uniform, a general recursive class is written,CodeAs follows:

I. xml files

 
<? XML version = "1.0" encoding = "UTF-8"?> <Configuration> <etetsions> <cycles> <sy_dt5_gsm_month> 5 </sy_dt5_gsm_month> <strong> 50 </strong> </cycles> </appsetsions> <transmissions> <GSM> <sy_dt5_gsm Company = "" model = "" com = "com3"> <yesterday> 2011-07-16 </yesterday> <lastmonth> </sy_dt5_gsm> </GSM> <GRPS> </GRPS> <ip> </IP> </transmissions> <connectionstrings> <Server>. </Server> <database> voltage </database> <user> SA </user> <pass> </connectionstrings> </configuration>
 

Ii. Recursion

Using system; using system. collections. generic; using system. LINQ; using system. web; using system. XML; // <summary> /// description of the xmlrwrite abstract /// </Summary> public class xmlrwrite {private string _ filepath; private string _ parentnode; private string _ childname; private string _ attributename; Public xmlrwrite () {}/// <summary> /// XML file storage path // </Summary> Public String filepath {set {_ filepath = value ;}}// /<Summary> // parent node // </Summary> Public String parentnode {set {_ parentnode = value ;}} /// <summary> /// sub-node /// </Summary> Public String childname {set {_ childname = value ;}} /// <summary >/// node attributes /// </Summary> Public String attributename {set {_ attributename = value ;}} /// <summary> /// recursively read the XML file node value /// </Summary> /// <Param name = "xnl"> xmlnodelist list </param>/ // <returns> return node value </Re Turns> private string readnodevalue (xmlnodelist xnl) {string value = ""; for (INT I = 0; I <xnl. Count; I ++) {If (value! = "") Break; If (xnl [I]. name = _ parentnode) {foreach (xmlnode childnode in xnl [I]) {If (childnode. name = _ childname) {value = childnode. innertext; break ;}}else {xmlnodelist xnl = xnl [I]. childnodes; If (xnl. count> 0) value = readnodevalue (xnl) ;}} return value ;} /// <summary> /// recursively read the XML file node attribute value /// </Summary> /// <Param name = "xnl"> xmlnodelist list </param>/ // <returns> return node value </returns> priv Ate string readattributevalue (xmlnodelist xnl) {string value = ""; for (INT I = 0; I <xnl. Count; I ++) {If (value! = "") Break; If (xnl [I]. name = _ parentnode) {foreach (xmlnode childnode in xnl [I]) {If (childnode. name = _ childname) {value = childnode. attributes [_ attributename]. value; break ;}}else {xmlnodelist xnl = xnl [I]. childnodes; If (xnl. count> 0) value = readattributevalue (xnl) ;}} return value ;} /// <summary> /// recursively set the node value /// </Summary> /// <Param name = "value"> node value </param> /// <Param name = "xnl"> xmlnodelist list </param> private void writenodevalue (string value, xmlnodelist xnl) {bool BL = false; For (INT I = 0; I <xnl. count; I ++) {If (BL) break; If (xnl [I]. name = _ parentnode) {foreach (xmlnode childnode in xnl [I]) {If (childnode. name = _ childname) {childnode. innertext = value; BL = true; break ;}} else {xmlnodelist xnl = xnl [I]. childnodes; If (xnl. count> 0) writenodevalue (value, xnl );}}} /// <summary> /// recursively set the node attribute value /// </Summary> /// <Param name = "value"> attribute value </param> // <param name = "xnl"> xmlnodelist list </param> private void writeattributevalue (string value, xmlnodelist xnl) {bool BL = false; For (INT I = 0; I <xnl. count; I ++) {If (BL) break; If (xnl [I]. name = _ parentnode) {foreach (xmlnode childnode in xnl [I]) {If (childnode. name = _ childname) {childnode. attributes [_ attributename]. value = value; BL = true; break ;}} else {xmlnodelist xnl = xnl [I]. childnodes; If (xnl. count> 0) writeattributevalue (value, xnl) ;}} private xmlnodelist xnodelist () {xmldocument xmldoc = new xmldocument (); xmldoc. load (_ filepath); xmlnodelist xnl = xmldoc. selectsinglenode ("configuration "). childnodes; return xnl ;} /// <summary> /// recursively read the node value /// </Summary> /// <returns> return value </returns> Public String getnodevalue () {xmlnodelist xnl = xnodelist (); string value = readnodevalue (xnl); return value ;} /// <summary> /// recursively read the attribute value /// </Summary> /// <returns> return value </returns> Public String getattributevalue () {xmlnodelist xnl = xnodelist (); string value = readattributevalue (xnl); return value ;} /// <summary> /// recursively set the node value /// </Summary> /// <Param name = "value"> node value </param> Public void setnodevalue (string value) {xmldocument xmldoc = new xmldocument (); xmldoc. load (_ filepath); xmlnodelist xnl = xmldoc. selectsinglenode ("configuration "). childnodes; writenodevalue (value, xnl); xmldoc. save (_ filepath );} /// <summary> /// recursively set the node property value /// </Summary> /// <Param name = "value"> attribute value </param> Public void setattributevalue (string Value) {xmldocument xmldoc = new xmldocument (); xmldoc. load (_ filepath); xmlnodelist xnl = xmldoc. selectsinglenode ("configuration "). childnodes; writeattributevalue (value, xnl); xmldoc. save (_ filepath );}}

Iii. Usage

 
Protected void button#click (Object sender, eventargs e) {string Path = "C: \ Users \ Administrator \ Documents \ Visual Studio 2010 \ websites \ website2 \ setup. XML "; xmlrwrite = new xmlrwrite (); xmlrwrite. filepath = path; // read the node value xmlrwrite. parentnode = "sy_dt5_gsm"; xmlrwrite. childname = "yesterday"; lblmsg. TEXT = xmlrwrite. getnodevalue (); // read the attribute value xmlrwrite. parentnode = "GSM"; xmlrwrite. childname = "sy_dt5_gsm"; xmlrwrite. attributename = "com"; lblmsg. TEXT = xmlrwrite. getattributevalue (); // set the node value xmlrwrite. parentnode = "sy_dt5_gsm"; xmlrwrite. childname = "yesterday"; xmlrwrite. setnodevalue (""); // you can specify the xmlrwrite attribute. parentnode = "GSM"; xmlrwrite. childname = "sy_dt5_gsm"; xmlrwrite. attributename = "com"; xmlrwrite. setattributevalue ("com3 ");}